{ "format": "wai.identify-vectors/1", "vectors": [ { "file": "ext/a.aac", "origin": "ext", "sha256": "ea31a5bb65cfb2ac2fff2ce3afeabdbed99dd5e45e5c34bb07771f676974a9f0", "result": { "format": "wai.identify/1", "size": 1008, "verdict": "identified", "candidates": [ { "id": "adts", "kind": "audio", "strength": "structure", "evidence": [ { "at": 0, "len": 7, "is": "frame_header" } ], "walked_to": 1008, "stopped": null, "facts": { "audio_object_type": 2, "sample_rate": 48000, "channel_configuration": 1, "frames_read": 11 }, "tracks": [], "capabilities": [ "wai.audio.aac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1008, "distinct_bytes": 242, "zero_bytes": 16, "chi_square": 710, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/a.aiff", "origin": "ext", "sha256": "1b3344dbdd4ba7a3dc3b81837266ecc633ccc79d944b2fbd766b143fdae48326", "result": { "format": "wai.identify/1", "size": 19254, "verdict": "signature_only", "candidates": [ { "id": "aiff", "kind": "audio", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "signature" }, { "at": 8, "len": 4, "is": "signature" } ], "walked_to": null, "stopped": null, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 19254, "distinct_bytes": 250, "zero_bytes": 297, "chi_square": 57193, "windows": 4, "uniform_windows": 0, "text": false, "periods": [ { "lag": 2, "z": 223 } ] } } }, { "file": "ext/a.caf", "origin": "ext", "sha256": "70ec35e6c84b65c66c942841fced6c04931338533315bd7da049508a4aea6f2a", "result": { "format": "wai.identify/1", "size": 19292, "verdict": "signature_only", "candidates": [ { "id": "caf", "kind": "audio", "strength": "signature", "evidence": [ { "at": 0, "len": 6, "is": "signature" } ], "walked_to": null, "stopped": null, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 19292, "distinct_bytes": 250, "zero_bytes": 329, "chi_square": 57300, "windows": 4, "uniform_windows": 0, "text": false, "periods": [ { "lag": 2, "z": 224 } ] } } }, { "file": "ext/a.flac", "origin": "ext", "sha256": "3e3c3106d974b603988c2bb70999d0912b3ca3a29c58559424096bbecd35ad60", "result": { "format": "wai.identify/1", "size": 11701, "verdict": "identified", "candidates": [ { "id": "flac", "kind": "audio", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "fLaC" }, { "at": 8, "len": 34, "is": "streaminfo" }, { "at": 8256, "len": 2, "is": "frame_sync" } ], "walked_to": 8256, "stopped": null, "facts": { "sample_rate": 48000, "channels": 1, "bits_per_sample": 16, "samples": 9600 }, "tracks": [], "capabilities": [ "wai.audio.flac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 11701, "distinct_bytes": 230, "zero_bytes": 8233, "chi_square": 1473953, "windows": 2, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/a.mp3", "origin": "ext", "sha256": "2920a38d767dc954a1975c4c33edb2385872cd7738dfe44e3166bd9865eeedbc", "result": { "format": "wai.identify/1", "size": 960, "verdict": "identified", "candidates": [ { "id": "mpeg-audio", "kind": "audio", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "frame_header" } ], "walked_to": 960, "stopped": null, "facts": { "version": "1", "layer": 3, "bitrate_kbps": 32, "sample_rate": 48000, "channels": 1, "frames_read": 10 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 960, "distinct_bytes": 226, "zero_bytes": 50, "chi_square": 3032, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/a.wav", "origin": "ext", "sha256": "1457f02fbce696728364edaf297d6f27a15013235dab83ddb69cab145fabfd44", "result": { "format": "wai.identify/1", "size": 19244, "verdict": "identified", "candidates": [ { "id": "wave", "kind": "audio", "strength": "structure", "evidence": [ { "at": 8, "len": 4, "is": "form:WAVE" }, { "at": 12, "len": 4, "is": "chunk:fmt " }, { "at": 36, "len": 4, "is": "chunk:data" } ], "walked_to": 19244, "stopped": null, "facts": { "form": "WAVE", "format_tag": 1, "channels": 1, "sample_rate": 48000, "bits_per_sample": 16, "data_bytes": 19200, "chunks": [ "fmt ", "data" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 19244, "distinct_bytes": 250, "zero_bytes": 288, "chi_square": 57174, "windows": 4, "uniform_windows": 0, "text": false, "periods": [ { "lag": 2, "z": 223 } ] } } }, { "file": "ext/a.wav.gz", "origin": "ext", "sha256": "b7230feadf741d63ed50f45e66a0c00977cf428fb3baa1be09379e614bf9658e", "result": { "format": "wai.identify/1", "size": 2403, "verdict": "signature_only", "candidates": [ { "id": "gzip", "kind": "compression", "strength": "signature", "evidence": [ { "at": 0, "len": 3, "is": "signature" } ], "walked_to": null, "stopped": null, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 2403, "distinct_bytes": 256, "zero_bytes": 11, "chi_square": 1103, "windows": 0, "uniform_windows": 0, "text": false, "periods": [ { "lag": 2, "z": 39 } ] } } }, { "file": "ext/a.wav.zst", "origin": "ext", "sha256": "200cd8e98cc214961cfd8df17fe059c6a475fbd0f21e867e6a46b913cb15aac4", "result": { "format": "wai.identify/1", "size": 2243, "verdict": "signature_only", "candidates": [ { "id": "zstd", "kind": "compression", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": null, "stopped": null, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 2243, "distinct_bytes": 256, "zero_bytes": 9, "chi_square": 264, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/av1.ivf", "origin": "ext", "sha256": "75d30ba1b17d0362cfb9d57d974764addc883203b3a429897b53f7b72dbea63c", "result": { "format": "wai.identify/1", "size": 2085, "verdict": "identified", "candidates": [ { "id": "ivf", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "dkif" } ], "walked_to": 2085, "stopped": null, "facts": { "frames_read": 3 }, "tracks": [ { "track": null, "media": "video", "stated": "AV01", "codec": "av1", "width": 64, "height": 64, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.av1" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 2085, "distinct_bytes": 256, "zero_bytes": 68, "chi_square": 744, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/av1.mp4", "origin": "ext", "sha256": "d416a03c01a178a0caf3c9f239cd447db1e78698251001584fde6ee4497e0451", "result": { "format": "wai.identify/1", "size": 2841, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 36, "len": 4, "is": "box:free" }, { "at": 44, "len": 4, "is": "box:mdat" }, { "at": 2063, "len": 4, "is": "box:moov" } ], "walked_to": 2841, "stopped": null, "facts": { "major_brand": "isom", "compatible_brands": [ "isom", "av01", "iso2", "mp41" ], "boxes": [ "ftyp", "free", "mdat", "moov" ] }, "tracks": [ { "track": 1, "media": "video", "stated": "av01", "codec": "av1", "width": 64, "height": 64, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.av1" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 2841, "distinct_bytes": 256, "zero_bytes": 533, "chi_square": 25164, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/av1.obu", "origin": "ext", "sha256": "8d55e307ff10f595b8f9af1e295866288b0e6c4ac2c3ffab79926472225b2f5e", "result": { "format": "wai.identify/1", "size": 2017, "verdict": "identified", "candidates": [ { "id": "av1-obu", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 2, "len": 13, "is": "sequence_header" } ], "walked_to": 2017, "stopped": null, "facts": { "profile": 0, "level": 0, "width": 64, "height": 64, "units_read": 8 }, "tracks": [], "capabilities": [ "wai.video.av1" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 2017, "distinct_bytes": 256, "zero_bytes": 21, "chi_square": 323, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/avc-aac.flv", "origin": "ext", "sha256": "d962f9b63872933fd4ebb82d84e6dff4bea3d1319c1af120dfbb85124caf0e40", "result": { "format": "wai.identify/1", "size": 2868, "verdict": "identified", "candidates": [ { "id": "flv", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": 2868, "stopped": null, "facts": { "tags_read": 18 }, "tracks": [ { "track": null, "media": "video", "stated": "codec_id:7", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": null, "media": "audio", "stated": "sound_format:10", "codec": "aac", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.audio.aac", "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 2868, "distinct_bytes": 252, "zero_bytes": 396, "chi_square": 15489, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/avc-aac.mp4", "origin": "ext", "sha256": "e5b380f71e871f4a9fb9fd7471864a4fcd1a7f05f16e8435692565aa28d6cfff", "result": { "format": "wai.identify/1", "size": 3692, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 36, "len": 4, "is": "box:free" }, { "at": 44, "len": 4, "is": "box:mdat" }, { "at": 2278, "len": 4, "is": "box:moov" } ], "walked_to": 3692, "stopped": null, "facts": { "major_brand": "isom", "compatible_brands": [ "isom", "iso2", "avc1", "mp41" ], "boxes": [ "ftyp", "free", "mdat", "moov" ] }, "tracks": [ { "track": 1, "media": "video", "stated": "avc1", "codec": "avc", "width": 32, "height": 32, "channels": null, "sample_rate": null, "protected": null }, { "track": 2, "media": "audio", "stated": "mp4a", "codec": "aac", "width": null, "height": null, "channels": 1, "sample_rate": 48000, "protected": null } ], "capabilities": [ "wai.audio.aac", "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 3692, "distinct_bytes": 251, "zero_bytes": 979, "chi_square": 67468, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/avc-aac.ts", "origin": "ext", "sha256": "5270f84feee33fb3a8650e04d64f01d16f6bc196e51dfe27818fd86c227215a9", "result": { "format": "wai.identify/1", "size": 4136, "verdict": "identified", "candidates": [ { "id": "mpeg-ts", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 1, "is": "sync" }, { "at": 193, "len": 16, "is": "pat" }, { "at": 381, "len": 26, "is": "pmt" } ], "walked_to": 4136, "stopped": null, "facts": { "packet_size": 188, "packets_read": 22, "scrambled_packets": 0, "programs": 1 }, "tracks": [ { "track": 256, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 257, "media": "audio", "stated": "stream_type:0x0f", "codec": "aac", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.audio.aac", "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 4136, "distinct_bytes": 253, "zero_bytes": 194, "chi_square": 135953, "windows": 1, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/avc-protected.mp4", "origin": "ext", "sha256": "034aae64437489f12e6304d28ddaeed6ad1ffc6a3623481aac50f872ae1e34c2", "result": { "format": "wai.identify/1", "size": 2310, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 36, "len": 4, "is": "box:free" }, { "at": 44, "len": 4, "is": "box:mdat" }, { "at": 1347, "len": 4, "is": "box:moov" } ], "walked_to": 2310, "stopped": null, "facts": { "major_brand": "isom", "compatible_brands": [ "isom", "iso2", "avc1", "mp41" ], "boxes": [ "ftyp", "free", "mdat", "moov" ] }, "tracks": [ { "track": 1, "media": "video", "stated": "encv", "codec": "avc", "width": 32, "height": 32, "channels": null, "sample_rate": null, "protected": { "scheme": "cenc", "original": "avc1" } } ], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 2310, "distinct_bytes": 256, "zero_bytes": 641, "chi_square": 45023, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/avc.h264", "origin": "ext", "sha256": "b2a6c8995d5ad321083dd03be3d345fb8644a8f87e15cab468196d543831571d", "result": { "format": "wai.identify/1", "size": 1327, "verdict": "identified", "candidates": [ { "id": "avc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 4, "len": 22, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 6, "profile_idc": 66, "constraint_flags": 192, "level_idc": 10, "chroma_format_idc": 1, "width": 32, "height": 32 }, "tracks": [], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1327, "distinct_bytes": 226, "zero_bytes": 72, "chi_square": 3879, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/avc.m2ts", "origin": "ext", "sha256": "c57bdad204994d27c7dda564fdf539302650f13170afd66b9410c544841eb0d7", "result": { "format": "wai.identify/1", "size": 6144, "verdict": "identified", "candidates": [ { "id": "mpeg-ts", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 1, "is": "sync" }, { "at": 201, "len": 16, "is": "pat" }, { "at": 393, "len": 33, "is": "pmt" } ], "walked_to": 6144, "stopped": null, "facts": { "packet_size": 192, "packets_read": 32, "scrambled_packets": 0, "programs": 1 }, "tracks": [ { "track": 4113, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 6144, "distinct_bytes": 240, "zero_bytes": 154, "chi_square": 770542, "windows": 1, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/container.jxl", "origin": "ext", "sha256": "7a98af88301eefa2e3a70f15fe4d8d7be19188245303bf45e5ae0c9fb885715a", "result": { "format": "wai.identify/1", "size": 298, "verdict": "signature_only", "candidates": [ { "id": "jpegxl", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 12, "is": "signature" } ], "walked_to": null, "stopped": null, "facts": {}, "tracks": [], "capabilities": [ "wai.image.jxl" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 298, "distinct_bytes": 163, "zero_bytes": 16, "chi_square": 478, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/flac.mp4", "origin": "ext", "sha256": "eb236b6e44c8847d850e4317cb748fba653ddba8f67fcb5df89603c65fd1ff1a", "result": { "format": "wai.identify/1", "size": 4217, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 32, "len": 4, "is": "box:free" }, { "at": 40, "len": 4, "is": "box:mdat" }, { "at": 3493, "len": 4, "is": "box:moov" } ], "walked_to": 4217, "stopped": null, "facts": { "major_brand": "isom", "compatible_brands": [ "isom", "iso2", "mp41" ], "boxes": [ "ftyp", "free", "mdat", "moov" ] }, "tracks": [ { "track": 1, "media": "audio", "stated": "fLaC", "codec": "flac", "width": null, "height": null, "channels": 1, "sample_rate": 48000, "protected": null } ], "capabilities": [ "wai.audio.flac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 4217, "distinct_bytes": 237, "zero_bytes": 491, "chi_square": 18569, "windows": 1, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/hevc-flac.mkv", "origin": "ext", "sha256": "674e828f7bd54bd0720f870edacbb19666e75193230f80cb8b85409b305eed67", "result": { "format": "wai.identify/1", "size": 4829, "verdict": "identified", "candidates": [ { "id": "matroska", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "ebml" }, { "at": 40, "len": 4, "is": "segment" }, { "at": 256, "len": 4, "is": "tracks" } ], "walked_to": 4829, "stopped": null, "facts": { "doc_type": "matroska", "doc_type_version": 4, "clusters": 1 }, "tracks": [ { "track": 1, "media": "video", "stated": "V_MPEGH/ISO/HEVC", "codec": "hevc", "width": 32, "height": 32, "channels": null, "sample_rate": null, "protected": null }, { "track": 2, "media": "audio", "stated": "A_FLAC", "codec": "flac", "width": null, "height": null, "channels": 1, "sample_rate": 48000, "protected": null } ], "capabilities": [ "wai.audio.flac", "wai.video.hevc" ] } ], "probes_accepted": [], "embedded": [ { "at": 559, "id": "flac" } ], "embedded_capped": false, "measures": { "scanned": 4829, "distinct_bytes": 255, "zero_bytes": 260, "chi_square": 7670, "windows": 1, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/hevc-fragmented.mp4", "origin": "ext", "sha256": "763f283d29ddd15722df00ec263ca8117fcbe7875ab34db4856dd2e391d4a2a0", "result": { "format": "wai.identify/1", "size": 1492, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 32, "len": 4, "is": "box:moov" }, { "at": 819, "len": 4, "is": "box:moof" }, { "at": 947, "len": 4, "is": "box:mdat" }, { "at": 1429, "len": 4, "is": "box:mfra" } ], "walked_to": 1492, "stopped": null, "facts": { "major_brand": "iso5", "compatible_brands": [ "iso5", "iso6", "mp41" ], "boxes": [ "ftyp", "moov", "moof", "mdat", "mfra" ], "fragments": 1 }, "tracks": [ { "track": 1, "media": "video", "stated": "hev1", "codec": "hevc", "width": 32, "height": 32, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.hevc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1492, "distinct_bytes": 233, "zero_bytes": 636, "chi_square": 69347, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/hevc-hvc1.mp4", "origin": "ext", "sha256": "241ad960cbf6dd98c720cf2f65840fa590f19732b07ce0f100284336396b3121", "result": { "format": "wai.identify/1", "size": 1432, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 32, "len": 4, "is": "box:free" }, { "at": 40, "len": 4, "is": "box:mdat" }, { "at": 522, "len": 4, "is": "box:moov" } ], "walked_to": 1432, "stopped": null, "facts": { "major_brand": "isom", "compatible_brands": [ "isom", "iso2", "mp41" ], "boxes": [ "ftyp", "free", "mdat", "moov" ] }, "tracks": [ { "track": 1, "media": "video", "stated": "hvc1", "codec": "hevc", "width": 32, "height": 32, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.hevc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1432, "distinct_bytes": 231, "zero_bytes": 591, "chi_square": 62495, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/hevc.h265", "origin": "ext", "sha256": "c5c5cffc8faee51237832c2e5957879966250ef870c2f663bafb9e63c0b951c6", "result": { "format": "wai.identify/1", "size": 556, "verdict": "identified", "candidates": [ { "id": "hevc-annexb", "kind": "elementary", "strength": "parameters", "evidence": [ { "at": 32, "len": 41, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 6, "probe": { "wai.video.hevc": { "profile_idc": 1, "tier": 0, "level_idc": 30, "chroma_format_idc": 1, "bit_depth": [ 8, 8 ], "coded": [ 32, 32 ], "cropped": [ 32, 32 ], "layers": 1, "layers_present": [ 0 ] } } }, "tracks": [], "capabilities": [ "wai.video.hevc" ] } ], "probes_accepted": [ "wai.video.hevc" ], "embedded": [], "embedded_capped": false, "measures": { "scanned": 556, "distinct_bytes": 220, "zero_bytes": 42, "chi_square": 1102, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/hevc.ts", "origin": "ext", "sha256": "8b8667d7c36152d1952299ad51354973b9024760bc91a76d30624da31f9927f9", "result": { "format": "wai.identify/1", "size": 2256, "verdict": "identified", "candidates": [ { "id": "mpeg-ts", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 1, "is": "sync" }, { "at": 193, "len": 16, "is": "pat" }, { "at": 381, "len": 27, "is": "pmt" } ], "walked_to": 2256, "stopped": null, "facts": { "packet_size": 188, "packets_read": 12, "scrambled_packets": 0, "programs": 1 }, "tracks": [ { "track": 256, "media": "video", "stated": "stream_type:0x24", "codec": "hevc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.hevc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 2256, "distinct_bytes": 229, "zero_bytes": 140, "chi_square": 216345, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/id3.mp3", "origin": "ext", "sha256": "69b401e49d9e952bbd80bc94d0aa974843ab93330405e660e3e92c1422c78f92", "result": { "format": "wai.identify/1", "size": 980, "verdict": "identified", "candidates": [ { "id": "mpeg-audio", "kind": "audio", "strength": "structure", "evidence": [ { "at": 0, "len": 3, "is": "id3v2" }, { "at": 20, "len": 4, "is": "frame_header" } ], "walked_to": 980, "stopped": null, "facts": { "version": "1", "layer": 3, "bitrate_kbps": 32, "sample_rate": 48000, "channels": 1, "frames_read": 10 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 980, "distinct_bytes": 226, "zero_bytes": 65, "chi_square": 3395, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/lossless.webp", "origin": "ext", "sha256": "9b596d8df41b18cd21c5e39ead637e75382810583f44a59ad4233a6ec741c6af", "result": { "format": "wai.identify/1", "size": 234, "verdict": "identified", "candidates": [ { "id": "webp", "kind": "image", "strength": "structure", "evidence": [ { "at": 8, "len": 4, "is": "form:WEBP" }, { "at": 12, "len": 4, "is": "chunk:VP8L" } ], "walked_to": 234, "stopped": null, "facts": { "form": "WEBP", "coding": "lossless", "width": 16, "height": 16, "chunks": [ "VP8L" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 234, "distinct_bytes": 144, "zero_bytes": 11, "chi_square": 378, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/lossy.webp", "origin": "ext", "sha256": "928f8f8405b6934a9a79f24fc67a040dce406923c770bd0a6d47ae74c9761769", "result": { "format": "wai.identify/1", "size": 214, "verdict": "identified", "candidates": [ { "id": "webp", "kind": "image", "strength": "structure", "evidence": [ { "at": 8, "len": 4, "is": "form:WEBP" }, { "at": 12, "len": 4, "is": "chunk:VP8 " } ], "walked_to": 214, "stopped": null, "facts": { "form": "WEBP", "coding": "lossy", "width": 16, "height": 16, "chunks": [ "VP8 " ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 214, "distinct_bytes": 138, "zero_bytes": 13, "chi_square": 417, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/manifest.mpd", "origin": "ext", "sha256": "2491eaf00a44942ec88ceae167d0dda3029d2990effb175e7f8a9c09d7a1f6fb", "result": { "format": "wai.identify/1", "size": 1146, "verdict": "identified", "candidates": [ { "id": "dash", "kind": "playlist", "strength": "structure", "evidence": [ { "at": 39, "len": 4, "is": "mpd" }, { "at": 106, "len": 29, "is": "namespace" } ], "walked_to": null, "stopped": null, "facts": { "type": null, "periods": 1, "adaptation_sets": 1, "representations": 1, "content_protection": 0, "codecs": [ "avc1.42c00a" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1146, "distinct_bytes": 63, "zero_bytes": 0, "chi_square": 8654, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "ext/media.m3u8", "origin": "ext", "sha256": "3bd62e75dfd4430d4ac0b5a53cc41f197be5ba8e25c9cf11d113acc575fd5e8d", "result": { "format": "wai.identify/1", "size": 137, "verdict": "identified", "candidates": [ { "id": "hls", "kind": "playlist", "strength": "structure", "evidence": [ { "at": 0, "len": 7, "is": "extm3u" } ], "walked_to": null, "stopped": null, "facts": { "playlist": "media", "variants": 0, "segments": 1, "maps": 0, "ended": true, "version": 3, "key_method": null, "codecs": null }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 137, "distinct_bytes": 30, "zero_bytes": 0, "chi_square": 1890, "windows": 0, "uniform_windows": 0, "text": true, "periods": [ { "lag": 24, "z": 8 } ] } } }, { "file": "ext/mpeg2.m2v", "origin": "ext", "sha256": "6869302ea293cde8af6b5ed180967962cfa36e1c9341c601d81fca754e38cc2f", "result": { "format": "wai.identify/1", "size": 1195, "verdict": "signature_only", "candidates": [ { "id": "mpeg-video", "kind": "elementary", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": null, "stopped": null, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1195, "distinct_bytes": 230, "zero_bytes": 102, "chi_square": 3894, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/mpeg2.mpg", "origin": "ext", "sha256": "e447f348395f09b6d9028309e1aa876e0537a76f33c15128960d8923c073ca92", "result": { "format": "wai.identify/1", "size": 2048, "verdict": "signature_only", "candidates": [ { "id": "mpeg-ps", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": null, "stopped": null, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 2048, "distinct_bytes": 231, "zero_bytes": 116, "chi_square": 84853, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/opus.m4a", "origin": "ext", "sha256": "2007dac1814cd9d395d2902387ada1599e476f88bb0fb78f20dc57ca714697d9", "result": { "format": "wai.identify/1", "size": 1655, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 32, "len": 4, "is": "box:free" }, { "at": 40, "len": 4, "is": "box:mdat" }, { "at": 896, "len": 4, "is": "box:moov" } ], "walked_to": 1655, "stopped": null, "facts": { "major_brand": "isom", "compatible_brands": [ "isom", "iso2", "mp41" ], "boxes": [ "ftyp", "free", "mdat", "moov" ] }, "tracks": [ { "track": 1, "media": "audio", "stated": "Opus", "codec": "opus", "width": null, "height": null, "channels": 1, "sample_rate": 48000, "protected": null } ], "capabilities": [ "wai.audio.opus" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1655, "distinct_bytes": 248, "zero_bytes": 518, "chi_square": 41313, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/opus.ogg", "origin": "ext", "sha256": "1c5e4c4481357ad0d0b0e27f7c374169dff3fe4eb8d7b5492fa4a6cefa98bd2a", "result": { "format": "wai.identify/1", "size": 1007, "verdict": "identified", "candidates": [ { "id": "ogg", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 47, "is": "page" }, { "at": 47, "len": 74, "is": "page" }, { "at": 121, "len": 886, "is": "page" } ], "walked_to": 1007, "stopped": null, "facts": { "pages_read": 3 }, "tracks": [ { "track": 0, "media": "audio", "stated": "OpusHead", "codec": "opus", "width": null, "height": null, "channels": 1, "sample_rate": 48000, "protected": null } ], "capabilities": [ "wai.audio.opus" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1007, "distinct_bytes": 247, "zero_bytes": 70, "chi_square": 1458, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/p.avif", "origin": "ext", "sha256": "cbec0be051f35bc3260e8fd86a5c652e10e81968be80e05dd363ae2392c59d6c", "result": { "format": "wai.identify/1", "size": 1643, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 36, "len": 4, "is": "box:meta" }, { "at": 285, "len": 4, "is": "box:mdat" } ], "walked_to": 1643, "stopped": null, "facts": { "major_brand": "avif", "compatible_brands": [ "avif", "mif1", "miaf", "MA1B" ], "boxes": [ "ftyp", "meta", "mdat" ] }, "tracks": [], "capabilities": [ "wai.image.avif" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1643, "distinct_bytes": 253, "zero_bytes": 138, "chi_square": 3060, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/p.gif", "origin": "ext", "sha256": "2c139ae759dab4650ddd2c08ad41a00e9c25bcb22b087fd12ff8db0ee4d6d2a8", "result": { "format": "wai.identify/1", "size": 1010, "verdict": "identified", "candidates": [ { "id": "gif", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 6, "is": "signature:GIF89a" }, { "at": 808, "len": 10, "is": "image" }, { "at": 1009, "len": 1, "is": "trailer" } ], "walked_to": 1010, "stopped": null, "facts": { "width": 16, "height": 16, "frames_read": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1010, "distinct_bytes": 132, "zero_bytes": 146, "chi_square": 15277, "windows": 0, "uniform_windows": 0, "text": false, "periods": [ { "lag": 3, "z": 52 } ] } } }, { "file": "ext/p.j2k", "origin": "ext", "sha256": "a5f751ac71783f2c6371f62823cd84c1ff9f0f1963325a33f1e0ff60fcda506f", "result": { "format": "wai.identify/1", "size": 619, "verdict": "signature_only", "candidates": [ { "id": "j2k", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": null, "stopped": null, "facts": {}, "tracks": [], "capabilities": [ "wai.image.jp2" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 619, "distinct_bytes": 208, "zero_bytes": 61, "chi_square": 1921, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/p.jp2", "origin": "ext", "sha256": "add028423cf1807ed016de5a4204fe155c5f0398d6a53585924e8c4d73ea8e73", "result": { "format": "wai.identify/1", "size": 704, "verdict": "signature_only", "candidates": [ { "id": "jp2", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 12, "is": "signature" } ], "walked_to": null, "stopped": null, "facts": {}, "tracks": [], "capabilities": [ "wai.image.jp2" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 704, "distinct_bytes": 211, "zero_bytes": 96, "chi_square": 3688, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/p.jpg", "origin": "ext", "sha256": "6b57ec332254806f0bc5da26bdf65a5cc11516242b369c829fc3746d3aa77d11", "result": { "format": "wai.identify/1", "size": 720, "verdict": "identified", "candidates": [ { "id": "jpeg", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 2, "is": "soi" }, { "at": 523, "len": 19, "is": "sof" }, { "at": 542, "len": 2, "is": "sos" } ], "walked_to": 542, "stopped": null, "facts": { "process": "baseline", "precision": 8, "height": 16, "width": 16, "components": 3, "applications": [ "jfif" ] }, "tracks": [], "capabilities": [ "wai.image.jpeg" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 720, "distinct_bytes": 216, "zero_bytes": 46, "chi_square": 1452, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/p.jxl", "origin": "ext", "sha256": "9550cdde1e942d8447e02f1bef8f7a86a689cb7db4688b0102d7618808d2bbab", "result": { "format": "wai.identify/1", "size": 258, "verdict": "signature_only", "candidates": [ { "id": "jpegxl", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 2, "is": "signature" } ], "walked_to": null, "stopped": null, "facts": {}, "tracks": [], "capabilities": [ "wai.image.jxl" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 258, "distinct_bytes": 157, "zero_bytes": 4, "chi_square": 287, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/p.png", "origin": "ext", "sha256": "9aa69e7a7d64614c336f1c8d3f5fbd6b0f92987a780e8ad29e87ce2b8b27cb43", "result": { "format": "wai.identify/1", "size": 344, "verdict": "identified", "candidates": [ { "id": "png", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 8, "is": "signature" }, { "at": 8, "len": 25, "is": "ihdr" }, { "at": 332, "len": 12, "is": "iend" } ], "walked_to": 344, "stopped": null, "facts": { "width": 16, "height": 16, "bit_depth": 8, "colour_type": 2, "interlace": 0, "chunks_read": 4 }, "tracks": [], "capabilities": [ "wai.image.png" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 344, "distinct_bytes": 166, "zero_bytes": 33, "chi_square": 1020, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/p.tif", "origin": "ext", "sha256": "25d52e80b490c1f25caea02c5f3dcbd05086571cddfdd9a517c3b16264e1235a", "result": { "format": "wai.identify/1", "size": 599, "verdict": "signature_only", "candidates": [ { "id": "tiff", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": null, "stopped": null, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 599, "distinct_bytes": 79, "zero_bytes": 159, "chi_square": 15703, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/t.vtt", "origin": "ext", "sha256": "d8733b067578f493638e34ef32085b3cc51c987fb1577521a850b33a2599c6d1", "result": { "format": "wai.identify/1", "size": 40, "verdict": "signature_only", "candidates": [ { "id": "webvtt", "kind": "text", "strength": "signature", "evidence": [ { "at": 0, "len": 6, "is": "signature" } ], "walked_to": null, "stopped": null, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 40, "distinct_bytes": 18, "zero_bytes": 0, "chi_square": 1406, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "ext/v.y4m", "origin": "ext", "sha256": "16e91b40178795c7ef75653aa8f637791bcccb073d3b1ef7bc7b1f330f3de36e", "result": { "format": "wai.identify/1", "size": 1226, "verdict": "identified", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 1226, "stopped": null, "facts": { "frame_rate": "10:1", "width": 16, "height": 16, "colour": "420jpeg", "frames_read": 3 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1226, "distinct_bytes": 70, "zero_bytes": 0, "chi_square": 17837, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/vorbis.ogg", "origin": "ext", "sha256": "ac6698aa26810401706be183de0c2fa6c53307a1646f678ac515d4c2df4182a3", "result": { "format": "wai.identify/1", "size": 3721, "verdict": "identified", "candidates": [ { "id": "ogg", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 58, "is": "page" }, { "at": 58, "len": 3114, "is": "page" }, { "at": 3172, "len": 549, "is": "page" } ], "walked_to": 3721, "stopped": null, "facts": { "pages_read": 3 }, "tracks": [ { "track": 1, "media": "audio", "stated": "vorbis", "codec": "vorbis", "width": null, "height": null, "channels": 1, "sample_rate": 48000, "protected": null } ], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 3721, "distinct_bytes": 253, "zero_bytes": 368, "chi_square": 10659, "windows": 0, "uniform_windows": 0, "text": false, "periods": [ { "lag": 12, "z": 19 }, { "lag": 15, "z": 39 }, { "lag": 18, "z": 28 } ] } } }, { "file": "ext/vp9-opus.webm", "origin": "ext", "sha256": "d74fc06dabf9ed292d9da79aea9e590df10c814ff2cf55bad7b111c31a9ef8c2", "result": { "format": "wai.identify/1", "size": 2342, "verdict": "identified", "candidates": [ { "id": "matroska", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "ebml" }, { "at": 36, "len": 4, "is": "segment" }, { "at": 246, "len": 4, "is": "tracks" } ], "walked_to": 2342, "stopped": null, "facts": { "doc_type": "webm", "doc_type_version": 4, "clusters": 1 }, "tracks": [ { "track": 1, "media": "video", "stated": "V_VP9", "codec": "vp9", "width": 32, "height": 32, "channels": null, "sample_rate": null, "protected": null }, { "track": 2, "media": "audio", "stated": "A_OPUS", "codec": "opus", "width": null, "height": null, "channels": 1, "sample_rate": 48000, "protected": null } ], "capabilities": [ "wai.audio.opus", "wai.video.vp9" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 2342, "distinct_bytes": 256, "zero_bytes": 220, "chi_square": 5679, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/vp9.ivf", "origin": "ext", "sha256": "0f8cae769710070a7d46afb0ff241a872dfc1004cbea04f7a6b9858dc57b8243", "result": { "format": "wai.identify/1", "size": 811, "verdict": "identified", "candidates": [ { "id": "ivf", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "dkif" } ], "walked_to": 811, "stopped": null, "facts": { "frames_read": 3 }, "tracks": [ { "track": null, "media": "video", "stated": "VP90", "codec": "vp9", "width": 32, "height": 32, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.vp9" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 811, "distinct_bytes": 235, "zero_bytes": 64, "chi_square": 1797, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "ext/vp9.mp4", "origin": "ext", "sha256": "a35c3e167b60b0cf915589c27f7b640a558d0a2af2246360fc5c9cc0942d7a89", "result": { "format": "wai.identify/1", "size": 1549, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 32, "len": 4, "is": "box:free" }, { "at": 40, "len": 4, "is": "box:mdat" }, { "at": 791, "len": 4, "is": "box:moov" } ], "walked_to": 1549, "stopped": null, "facts": { "major_brand": "isom", "compatible_brands": [ "isom", "iso2", "mp41" ], "boxes": [ "ftyp", "free", "mdat", "moov" ] }, "tracks": [ { "track": 1, "media": "video", "stated": "vp09", "codec": "vp9", "width": 32, "height": 32, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.vp9" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1549, "distinct_bytes": 236, "zero_bytes": 527, "chi_square": 45891, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/empty.bin", "origin": "gen", "what": "no bytes: unknown", "sha256": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855", "result": { "format": "wai.identify/1", "size": 0, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 0, "distinct_bytes": 0, "zero_bytes": 0, "chi_square": 0, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/noise.bin", "origin": "gen", "what": "noise: unknown, its windows uniform, no repeat", "sha256": "04ff2098bd3b7fba9f9d322cf59ae2373ed18bbc84ef20fca6ddc44aaef82974", "result": { "format": "wai.identify/1", "size": 16384, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 16384, "distinct_bytes": 256, "zero_bytes": 64, "chi_square": 265, "windows": 4, "uniform_windows": 4, "text": false, "periods": [] } } }, { "file": "gen/zeros.bin", "origin": "gen", "what": "one value: unknown, no peak at any lag", "sha256": "5f70bf18a086007016e948b04aed3b82103a36bea41755b6cddfaf10ace3c6ef", "result": { "format": "wai.identify/1", "size": 1024, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1024, "distinct_bytes": 1, "zero_bytes": 1024, "chi_square": 261120, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/records.bin", "origin": "gen", "what": "records of 188 bytes under an unknown sync: unknown, and the repeat found", "sha256": "8b380488611dc7f4b23cd92ed06b02803cfcef619fe4295dfd6760fd6b93115c", "result": { "format": "wai.identify/1", "size": 24064, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 24064, "distinct_bytes": 256, "zero_bytes": 75, "chi_square": 522, "windows": 5, "uniform_windows": 4, "text": false, "periods": [ { "lag": 188, "z": 12 } ] } } }, { "file": "gen/text.bin", "origin": "gen", "what": "text in no known format", "sha256": "eba3bd1376451887d8e385553093b07149f27b942092905ebc9b4807810f2449", "result": { "format": "wai.identify/1", "size": 50, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 50, "distinct_bytes": 19, "zero_bytes": 0, "chi_square": 963, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/pcm16.bin", "origin": "gen", "what": "samples of 16 bits with no header: unknown, and their width found", "sha256": "862f5c381f97716312fc10bbf23cb7a07ea5c7b77a9cae3224c7944eed2f6acd", "result": { "format": "wai.identify/1", "size": 8000, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 8000, "distinct_bytes": 256, "zero_bytes": 526, "chi_square": 61699, "windows": 1, "uniform_windows": 0, "text": false, "periods": [ { "lag": 2, "z": 190 } ] } } }, { "file": "gen/cut-mp4.bin", "origin": "gen", "what": "ISO media cut inside a box: overrun, and still two headers", "sha256": "59447bae9318d5f1cba326c5377ecbe0db34b4f05e130a77dc036f3b56ed4117", "result": { "format": "wai.identify/1", "size": 1846, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 36, "len": 4, "is": "box:free" }, { "at": 44, "len": 4, "is": "box:mdat" } ], "walked_to": 40, "stopped": { "at": 40, "why": "overrun" }, "facts": { "major_brand": "isom", "compatible_brands": [ "isom", "iso2", "avc1", "mp41" ], "boxes": [ "ftyp", "free", "mdat" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1846, "distinct_bytes": 249, "zero_bytes": 74, "chi_square": 2945, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/cut-ftyp.bin", "origin": "gen", "what": "a lone box header past the file: signature", "sha256": "dbfddbd190b8ebc24b31126158923d99b6dde5bc793bcd81485d21514926026b", "result": { "format": "wai.identify/1", "size": 20, "verdict": "signature_only", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "signature", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" } ], "walked_to": 0, "stopped": { "at": 0, "why": "overrun" }, "facts": { "boxes": [ "ftyp" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 20, "distinct_bytes": 11, "zero_bytes": 6, "chi_square": 722, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/cut-mkv.bin", "origin": "gen", "what": "Matroska cut in a Cluster", "sha256": "72ba4ae4c7aedd4585c1f489d5f8ecd84edd15883dd1ddff932b3efa424f76ee", "result": { "format": "wai.identify/1", "size": 2414, "verdict": "identified", "candidates": [ { "id": "matroska", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "ebml" }, { "at": 40, "len": 4, "is": "segment" }, { "at": 256, "len": 4, "is": "tracks" } ], "walked_to": 772, "stopped": { "at": 772, "why": "overrun" }, "facts": { "doc_type": "matroska", "doc_type_version": 4, "segment_overruns_by": 2415, "clusters": 1 }, "tracks": [ { "track": 1, "media": "video", "stated": "V_MPEGH/ISO/HEVC", "codec": "hevc", "width": 32, "height": 32, "channels": null, "sample_rate": null, "protected": null }, { "track": 2, "media": "audio", "stated": "A_FLAC", "codec": "flac", "width": null, "height": null, "channels": 1, "sample_rate": 48000, "protected": null } ], "capabilities": [ "wai.audio.flac", "wai.video.hevc" ] } ], "probes_accepted": [], "embedded": [ { "at": 559, "id": "flac" } ], "embedded_capped": false, "measures": { "scanned": 2414, "distinct_bytes": 255, "zero_bytes": 239, "chi_square": 7182, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/cut-mkv-header.bin", "origin": "gen", "what": "an EBML header that does not fit", "sha256": "4bc03f251c8c1bb56da5a81a0431b9a6533258c4cf3dd2bbea9715fb9317900d", "result": { "format": "wai.identify/1", "size": 10, "verdict": "signature_only", "candidates": [ { "id": "matroska", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "ebml" } ], "walked_to": 0, "stopped": { "at": 0, "why": "overrun" }, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 10, "distinct_bytes": 9, "zero_bytes": 0, "chi_square": 297, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/cut-flac.bin", "origin": "gen", "what": "FLAC cut inside STREAMINFO", "sha256": "b7ade1136375d6851395961fd7cdab835b4984f434dc9994ce34e9132cc61019", "result": { "format": "wai.identify/1", "size": 20, "verdict": "signature_only", "candidates": [ { "id": "flac", "kind": "audio", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "fLaC" } ], "walked_to": 4, "stopped": { "at": 4, "why": "overrun" }, "facts": {}, "tracks": [], "capabilities": [ "wai.audio.flac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 20, "distinct_bytes": 12, "zero_bytes": 8, "chi_square": 978, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/cut-flac-meta.bin", "origin": "gen", "what": "FLAC's first block whole, and the walk past the file", "sha256": "349020383cd7c67d22bb58310a64977612fc1acfbdf627d74ccd27b449522c34", "result": { "format": "wai.identify/1", "size": 42, "verdict": "signature_only", "candidates": [ { "id": "flac", "kind": "audio", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "fLaC" }, { "at": 8, "len": 34, "is": "streaminfo" } ], "walked_to": 42, "stopped": { "at": 42, "why": "overrun" }, "facts": { "sample_rate": 48000, "channels": 1, "bits_per_sample": 16, "samples": 9600 }, "tracks": [], "capabilities": [ "wai.audio.flac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 42, "distinct_bytes": 28, "zero_bytes": 11, "chi_square": 933, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/cut-png.bin", "origin": "gen", "what": "PNG cut after IHDR", "sha256": "2ed1ccc0224b847fbe0d1ce06ef992e87dd83c146716019b5ce7953a90c5b676", "result": { "format": "wai.identify/1", "size": 40, "verdict": "identified", "candidates": [ { "id": "png", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 8, "is": "signature" }, { "at": 8, "len": 25, "is": "ihdr" } ], "walked_to": 33, "stopped": { "at": 33, "why": "overrun" }, "facts": { "width": 16, "height": 16, "bit_depth": 8, "colour_type": 2, "interlace": 0, "chunks_read": 1 }, "tracks": [], "capabilities": [ "wai.image.png" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 40, "distinct_bytes": 22, "zero_bytes": 15, "chi_square": 1611, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/cut-ogg.bin", "origin": "gen", "what": "Ogg cut inside a page", "sha256": "286629b93197d828ee03c3ec49da518d37d8f32510368c84bf4b9623d65d56cb", "result": { "format": "wai.identify/1", "size": 503, "verdict": "identified", "candidates": [ { "id": "ogg", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 47, "is": "page" }, { "at": 47, "len": 74, "is": "page" } ], "walked_to": 121, "stopped": { "at": 121, "why": "overrun" }, "facts": { "pages_read": 2 }, "tracks": [ { "track": 0, "media": "audio", "stated": "OpusHead", "codec": "opus", "width": null, "height": null, "channels": 1, "sample_rate": 48000, "protected": null } ], "capabilities": [ "wai.audio.opus" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 503, "distinct_bytes": 195, "zero_bytes": 68, "chi_square": 2564, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/cut-ts.bin", "origin": "gen", "what": "a transport stream cut inside a packet", "sha256": "1dd3150440c36a328c62b898aa1f1dd14c355fa2d84240eb4444782b3a5dd0bc", "result": { "format": "wai.identify/1", "size": 4036, "verdict": "identified", "candidates": [ { "id": "mpeg-ts", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 1, "is": "sync" }, { "at": 193, "len": 16, "is": "pat" }, { "at": 381, "len": 26, "is": "pmt" } ], "walked_to": 3948, "stopped": { "at": 3948, "why": "overrun" }, "facts": { "packet_size": 188, "packets_read": 21, "scrambled_packets": 0, "programs": 1 }, "tracks": [ { "track": 256, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 257, "media": "audio", "stated": "stream_type:0x0f", "codec": "aac", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.audio.aac", "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 4036, "distinct_bytes": 253, "zero_bytes": 191, "chi_square": 139111, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/cut-wav.bin", "origin": "gen", "what": "RIFF declaring more than the file holds", "sha256": "014894065a3e376670321850b52fdc701bdb040c4e469ede0d1e8104902dc016", "result": { "format": "wai.identify/1", "size": 100, "verdict": "identified", "candidates": [ { "id": "wave", "kind": "audio", "strength": "structure", "evidence": [ { "at": 8, "len": 4, "is": "form:WAVE" }, { "at": 12, "len": 4, "is": "chunk:fmt " }, { "at": 36, "len": 4, "is": "chunk:data" } ], "walked_to": 36, "stopped": { "at": 36, "why": "overrun" }, "facts": { "form": "WAVE", "declared_size": 19244, "format_tag": 1, "channels": 1, "sample_rate": 48000, "bits_per_sample": 16, "data_bytes": 19200, "chunks": [ "fmt ", "data" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 100, "distinct_bytes": 60, "zero_bytes": 19, "chi_square": 1220, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/cut-jpeg.bin", "origin": "gen", "what": "JPEG cut before its frame header", "sha256": "73d268045cf7e2f5909e33bc43c08318093e6a406da90068a880687e21e1e602", "result": { "format": "wai.identify/1", "size": 30, "verdict": "signature_only", "candidates": [ { "id": "jpeg", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 2, "is": "soi" } ], "walked_to": 20, "stopped": { "at": 20, "why": "overrun" }, "facts": { "applications": [ "jfif" ] }, "tracks": [], "capabilities": [ "wai.image.jpeg" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 30, "distinct_bytes": 17, "zero_bytes": 8, "chi_square": 840, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/cut-gif.bin", "origin": "gen", "what": "GIF cut in its global table", "sha256": "dce27857d398a1ac8ec2b624e0f18283b2a4e60c5f938e3b4e92f4319c9a968a", "result": { "format": "wai.identify/1", "size": 20, "verdict": "signature_only", "candidates": [ { "id": "gif", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 6, "is": "signature:GIF89a" } ], "walked_to": 20, "stopped": { "at": 20, "why": "overrun" }, "facts": { "width": 16, "height": 16, "frames_read": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 20, "distinct_bytes": 13, "zero_bytes": 7, "chi_square": 799, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/cut-gif-lsd.bin", "origin": "gen", "what": "GIF cut in its screen descriptor", "sha256": "be2958f6b8e3f580695f8db86c246fc29c41fd257ef443b1add4ef1716353bf7", "result": { "format": "wai.identify/1", "size": 9, "verdict": "signature_only", "candidates": [ { "id": "gif", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 6, "is": "signature:GIF89a" } ], "walked_to": 6, "stopped": { "at": 6, "why": "overrun" }, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 9, "distinct_bytes": 8, "zero_bytes": 1, "chi_square": 303, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/cut-ivf.bin", "origin": "gen", "what": "IVF cut inside a frame", "sha256": "e4afea1daab5188a47391052ac7d3b5011ab7005acfe2bc658b81064adba6253", "result": { "format": "wai.identify/1", "size": 50, "verdict": "signature_only", "candidates": [ { "id": "ivf", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "dkif" } ], "walked_to": 32, "stopped": { "at": 32, "why": "overrun" }, "facts": { "frames_read": 0 }, "tracks": [ { "track": null, "media": "video", "stated": "VP90", "codec": "vp9", "width": 32, "height": 32, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.vp9" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 50, "distinct_bytes": 18, "zero_bytes": 29, "chi_square": 4414, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/cut-y4m.bin", "origin": "gen", "what": "YUV4MPEG2 cut inside a frame", "sha256": "7116ffaa33375db51ebca66873bcac614a500d3cccd8d819ce9e14d73a611d59", "result": { "format": "wai.identify/1", "size": 50, "verdict": "signature_only", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "signature", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 0, "stopped": { "at": 0, "why": "overrun" }, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 50, "distinct_bytes": 27, "zero_bytes": 0, "chi_square": 728, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/cut-flv.bin", "origin": "gen", "what": "FLV cut inside a tag", "sha256": "853b64af4f1bfb6f572df8328c87f3ad9c27a9dbe6110a1f42a5534f64f902af", "result": { "format": "wai.identify/1", "size": 100, "verdict": "signature_only", "candidates": [ { "id": "flv", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": 13, "stopped": { "at": 13, "why": "overrun" }, "facts": { "tags_read": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 100, "distinct_bytes": 37, "zero_bytes": 38, "chi_square": 3980, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/cut-obu.bin", "origin": "gen", "what": "OBUs cut inside one", "sha256": "41eb1fb43d5373bd1da4d32939b133b084f085d3e1478f41a098fc41f1722335", "result": { "format": "wai.identify/1", "size": 40, "verdict": "identified", "candidates": [ { "id": "av1-obu", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 2, "len": 13, "is": "sequence_header" } ], "walked_to": 15, "stopped": { "at": 15, "why": "overrun" }, "facts": { "profile": 0, "level": 0, "width": 64, "height": 64, "units_read": 2 }, "tracks": [], "capabilities": [ "wai.video.av1" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 40, "distinct_bytes": 31, "zero_bytes": 5, "chi_square": 408, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/two-adts.bin", "origin": "gen", "what": "two ADTS frames are not three: signature", "sha256": "427a9c232c51feecaef2a7eefb218e0e904c252576777fa9bf6b9eaa363fe24c", "result": { "format": "wai.identify/1", "size": 298, "verdict": "signature_only", "candidates": [ { "id": "adts", "kind": "audio", "strength": "signature", "evidence": [ { "at": 0, "len": 7, "is": "frame_header" } ], "walked_to": 298, "stopped": null, "facts": { "audio_object_type": 2, "sample_rate": 48000, "channel_configuration": 1, "frames_read": 2 }, "tracks": [], "capabilities": [ "wai.audio.aac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 298, "distinct_bytes": 160, "zero_bytes": 3, "chi_square": 497, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/two-mp3.bin", "origin": "gen", "what": "two MPEG audio frames are not three: signature", "sha256": "0d8b00b6c52e3e5545460753f52415d95ce0e58f5e8e66026a3ae26a22e2997a", "result": { "format": "wai.identify/1", "size": 192, "verdict": "signature_only", "candidates": [ { "id": "mpeg-audio", "kind": "audio", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "frame_header" } ], "walked_to": 192, "stopped": null, "facts": { "version": "1", "layer": 3, "bitrate_kbps": 32, "sample_rate": 48000, "channels": 1, "frames_read": 2 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 192, "distinct_bytes": 120, "zero_bytes": 13, "chi_square": 557, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/no-frame.bin", "origin": "gen", "what": "an MPEG audio header with no whole frame: no candidate", "sha256": "34e35f17ad73661a4a169dd74f0065ebae3f7a804b0df6f851f2e2aca1316350", "result": { "format": "wai.identify/1", "size": 4, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 4, "distinct_bytes": 4, "zero_bytes": 1, "chi_square": 252, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ts-short-sync.bin", "origin": "gen", "what": "a broken sync byte among the first five: no layout holds, so unknown", "sha256": "89e14869ade107eae9494359f24eb965df803653f0b41dcf5c26e7ab36d45b46", "result": { "format": "wai.identify/1", "size": 4136, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 4136, "distinct_bytes": 253, "zero_bytes": 194, "chi_square": 135951, "windows": 1, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ts-bad-sync.bin", "origin": "gen", "what": "a broken sync byte later: invalid, after the tables", "sha256": "8ed094ea8613d1afcffd42c80f33959e8ce406c9a14dc46ad2b5c5ba346cc583", "result": { "format": "wai.identify/1", "size": 4136, "verdict": "identified", "candidates": [ { "id": "mpeg-ts", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 1, "is": "sync" }, { "at": 193, "len": 16, "is": "pat" }, { "at": 381, "len": 26, "is": "pmt" } ], "walked_to": 1316, "stopped": { "at": 1316, "why": "invalid" }, "facts": { "packet_size": 188, "packets_read": 7, "scrambled_packets": 0, "programs": 1 }, "tracks": [ { "track": 256, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 257, "media": "audio", "stated": "stream_type:0x0f", "codec": "aac", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.audio.aac", "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 4136, "distinct_bytes": 253, "zero_bytes": 194, "chi_square": 135951, "windows": 1, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ts-bad-pat.bin", "origin": "gen", "what": "the program table's checksum broken: no programs, no tracks", "sha256": "ffb1c1ed2ba27c9696783e233f952da51771697e20aed2a8b167590c72a0244a", "result": { "format": "wai.identify/1", "size": 4136, "verdict": "identified", "candidates": [ { "id": "mpeg-ts", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 1, "is": "sync" } ], "walked_to": 4136, "stopped": null, "facts": { "packet_size": 188, "packets_read": 22, "scrambled_packets": 0, "programs": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 4136, "distinct_bytes": 253, "zero_bytes": 194, "chi_square": 135954, "windows": 1, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ogg-bad-crc.bin", "origin": "gen", "what": "a page whose checksum fails", "sha256": "da90903ebbd4d22053f851d0c79d2f1cfdec14581bf7d0a93daa5c74fff08b2b", "result": { "format": "wai.identify/1", "size": 1007, "verdict": "identified", "candidates": [ { "id": "ogg", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 47, "is": "page" }, { "at": 47, "len": 74, "is": "page" } ], "walked_to": 121, "stopped": { "at": 121, "why": "crc" }, "facts": { "pages_read": 2 }, "tracks": [ { "track": 0, "media": "audio", "stated": "OpusHead", "codec": "opus", "width": null, "height": null, "channels": 1, "sample_rate": 48000, "protected": null } ], "capabilities": [ "wai.audio.opus" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1007, "distinct_bytes": 247, "zero_bytes": 70, "chi_square": 1458, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/png-bad-crc.bin", "origin": "gen", "what": "IHDR whose checksum fails: signature only", "sha256": "2340cda4d5ce2c95105f5ffb20cd05f3f55bb71bdb7b448341c85105c2f91987", "result": { "format": "wai.identify/1", "size": 344, "verdict": "signature_only", "candidates": [ { "id": "png", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 8, "is": "signature" } ], "walked_to": 8, "stopped": { "at": 8, "why": "crc" }, "facts": { "chunks_read": 0 }, "tracks": [], "capabilities": [ "wai.image.png" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 344, "distinct_bytes": 166, "zero_bytes": 32, "chi_square": 974, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mp4-bad-type.bin", "origin": "gen", "what": "a box type outside the allowed bytes", "sha256": "f3c53b4ef138231baea3adf05a60ed6220576c2deaa99bc0abb038014fcfbd0c", "result": { "format": "wai.identify/1", "size": 3692, "verdict": "signature_only", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "signature", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" } ], "walked_to": 32, "stopped": { "at": 32, "why": "invalid" }, "facts": { "major_brand": "isom", "compatible_brands": [ "isom", "iso2", "avc1", "mp41" ], "boxes": [ "ftyp" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 3692, "distinct_bytes": 251, "zero_bytes": 979, "chi_square": 67477, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/flac-no-sync.bin", "origin": "gen", "what": "FLAC's blocks whole, and no frame after them: signature", "sha256": "0ad89b1529c16fff0d5d33d88721b921b39fe25b6f1fe038d45144d9f5262e74", "result": { "format": "wai.identify/1", "size": 11701, "verdict": "signature_only", "candidates": [ { "id": "flac", "kind": "audio", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "fLaC" }, { "at": 8, "len": 34, "is": "streaminfo" } ], "walked_to": 8256, "stopped": { "at": 8256, "why": "invalid" }, "facts": { "sample_rate": 48000, "channels": 1, "bits_per_sample": 16, "samples": 9600 }, "tracks": [], "capabilities": [ "wai.audio.flac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 11701, "distinct_bytes": 230, "zero_bytes": 8234, "chi_square": 1474313, "windows": 2, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/id3-flac.bin", "origin": "gen", "what": "FLAC after an ID3v2 tag with a footer", "sha256": "874d71b5cb509dc64a7d4bb3f9ad24967bfd2935394fc7f1c4398b3a3a1e3bff", "result": { "format": "wai.identify/1", "size": 11722, "verdict": "identified", "candidates": [ { "id": "flac", "kind": "audio", "strength": "structure", "evidence": [ { "at": 21, "len": 4, "is": "fLaC" }, { "at": 29, "len": 34, "is": "streaminfo" }, { "at": 8277, "len": 2, "is": "frame_sync" } ], "walked_to": 8277, "stopped": null, "facts": { "sample_rate": 48000, "channels": 1, "bits_per_sample": 16, "samples": 9600 }, "tracks": [], "capabilities": [ "wai.audio.flac" ] } ], "probes_accepted": [], "embedded": [ { "at": 21, "id": "flac" } ], "embedded_capped": false, "measures": { "scanned": 11722, "distinct_bytes": 230, "zero_bytes": 8248, "chi_square": 1476680, "windows": 2, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/id3-bad.bin", "origin": "gen", "what": "a malformed ID3v2 size: neither FLAC nor MPEG audio", "sha256": "6f46244fab78c997eb0c2aa09b777b671925afe0ce79aa494b9824feb6d0c592", "result": { "format": "wai.identify/1", "size": 11711, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [ { "at": 10, "id": "flac" } ], "embedded_capped": false, "measures": { "scanned": 11711, "distinct_bytes": 230, "zero_bytes": 8237, "chi_square": 1474124, "windows": 2, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/hevc-no-pps.bin", "origin": "gen", "what": "H.265 without its picture parameter set: the walk has no reading, and the probe, which reads the other two, accepts it", "sha256": "5e9c4efcd50cb60d760eb74500395d2d9768049ddb79947ad5e996643147d4f1", "result": { "format": "wai.identify/1", "size": 547, "verdict": "identified", "candidates": [ { "id": "wai.video.hevc", "kind": "elementary", "strength": "parameters", "evidence": [ { "at": 0, "len": 547, "is": "probe" } ], "walked_to": null, "stopped": null, "facts": { "probe": { "wai.video.hevc": { "profile_idc": 1, "tier": 0, "level_idc": 30, "chroma_format_idc": 1, "bit_depth": [ 8, 8 ], "coded": [ 32, 32 ], "cropped": [ 32, 32 ], "layers": 1, "layers_present": [ 0 ] } } }, "tracks": [], "capabilities": [ "wai.video.hevc" ] } ], "probes_accepted": [ "wai.video.hevc" ], "embedded": [], "embedded_capped": false, "measures": { "scanned": 547, "distinct_bytes": 220, "zero_bytes": 40, "chi_square": 1019, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/hevc-out-of-order.bin", "origin": "gen", "what": "H.265 parameter sets out of order: the walk has no reading, and the probe accepts it", "sha256": "3128cbcf626bf9e69ce2f1eb570542312f5e224ddd6f19502dead1912d01c64f", "result": { "format": "wai.identify/1", "size": 557, "verdict": "identified", "candidates": [ { "id": "wai.video.hevc", "kind": "elementary", "strength": "parameters", "evidence": [ { "at": 0, "len": 557, "is": "probe" } ], "walked_to": null, "stopped": null, "facts": { "probe": { "wai.video.hevc": { "profile_idc": 1, "tier": 0, "level_idc": 30, "chroma_format_idc": 1, "bit_depth": [ 8, 8 ], "coded": [ 32, 32 ], "cropped": [ 32, 32 ], "layers": 1, "layers_present": [ 0 ] } } }, "tracks": [], "capabilities": [ "wai.video.hevc" ] } ], "probes_accepted": [ "wai.video.hevc" ], "embedded": [], "embedded_capped": false, "measures": { "scanned": 557, "distinct_bytes": 220, "zero_bytes": 43, "chi_square": 1137, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/hevc-headers-only.bin", "origin": "gen", "what": "H.265's headers in order with nothing the probe reads: structure, and its refusal", "sha256": "8474c1417cb090d307f271e09af894116d3119168da1dcd7ee602b1b3af0a8eb", "result": { "format": "wai.identify/1", "size": 28, "verdict": "identified", "candidates": [ { "id": "hevc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 11, "len": 3, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 4, "probe_refused": { "wai.video.hevc": "truncated" } }, "tracks": [], "capabilities": [ "wai.video.hevc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 28, "distinct_bytes": 7, "zero_bytes": 12, "chi_square": 2056, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-idr-first.bin", "origin": "gen", "what": "H.264 with a picture before its parameter sets: no reading", "sha256": "0e386ba9c3a971f76724e2a4972f3c54cfd35b4c13ece7735c0a0308307b18b1", "result": { "format": "wai.identify/1", "size": 1329, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1329, "distinct_bytes": 226, "zero_bytes": 74, "chi_square": 3926, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-sps.bin", "origin": "gen", "what": "H.264 from fixed values, with a crop", "sha256": "f3ac826121530c4f9317b202e95de31c3c97cab03f3bd102b3ae04a8547d5c25", "result": { "format": "wai.identify/1", "size": 28, "verdict": "identified", "candidates": [ { "id": "avc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 4, "len": 10, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 3, "profile_idc": 77, "constraint_flags": 0, "level_idc": 30, "chroma_format_idc": 1, "width": 252, "height": 248 }, "tracks": [], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 28, "distinct_bytes": 16, "zero_bytes": 10, "chi_square": 1124, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-bad-profile.bin", "origin": "gen", "what": "H.264's headers with a profile not defined: no reading", "sha256": "0adfbad45dd76b69702ebf1cfff51aba6af433b21dd16d07d0168ca58dd6c59a", "result": { "format": "wai.identify/1", "size": 26, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 26, "distinct_bytes": 15, "zero_bytes": 10, "chi_square": 1175, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/vvc-headers.bin", "origin": "gen", "what": "H.266's headers in order with nothing the probe reads", "sha256": "e8ecc42bb94aa33f3ae464f8d7734397045ee3ebf7b248d37dd474379075c722", "result": { "format": "wai.identify/1", "size": 21, "verdict": "identified", "candidates": [ { "id": "vvc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 4, "len": 3, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 3, "probe_refused": { "wai.video.vvc": "truncated" } }, "tracks": [], "capabilities": [ "wai.video.vvc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 21, "distinct_bytes": 6, "zero_bytes": 12, "chi_square": 1990, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/polyglot-annexb.bin", "origin": "gen", "what": "a stream both H.264's and H.266's headers fit: ambiguous, and both reported", "sha256": "9c450581ded4010834916d0b394614b8e36660d19627a9408e875446c8b19bdd", "result": { "format": "wai.identify/1", "size": 29, "verdict": "ambiguous", "candidates": [ { "id": "avc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 4, "len": 11, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 3, "profile_idc": 122, "constraint_flags": 0, "level_idc": 30, "chroma_format_idc": 2, "width": 252, "height": 252 }, "tracks": [], "capabilities": [ "wai.video.avc" ] }, { "id": "vvc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 4, "len": 11, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 3, "probe_refused": { "wai.video.vvc": "reserved_value" } }, "tracks": [], "capabilities": [ "wai.video.vvc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 29, "distinct_bytes": 16, "zero_bytes": 10, "chi_square": 1145, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mpeg-ps-start.bin", "origin": "gen", "what": "an MPEG program stream's start: ยง6, not Annex B", "sha256": "7554302fa115ba7706b2cb44ae9a1467f86d0e98e46e47b69aceaec2a2ffae26", "result": { "format": "wai.identify/1", "size": 6, "verdict": "signature_only", "candidates": [ { "id": "mpeg-ps", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": null, "stopped": null, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 6, "distinct_bytes": 4, "zero_bytes": 3, "chi_square": 506, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-many-units.bin", "origin": "gen", "what": "more NAL units than a walk reads: limit", "sha256": "64212223efc0c723c51ff8368c289bf82ef028dd3127625593cdd427093936e7", "result": { "format": "wai.identify/1", "size": 24598, "verdict": "identified", "candidates": [ { "id": "avc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 4, "len": 10, "is": "nal:sps" } ], "walked_to": null, "stopped": { "at": 24584, "why": "limit" }, "facts": { "units_read": 4096, "profile_idc": 77, "constraint_flags": 0, "level_idc": 30, "chroma_format_idc": 1, "width": 252, "height": 248 }, "tracks": [], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 24598, "distinct_bytes": 16, "zero_bytes": 12295, "chi_square": 2072639, "windows": 6, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/polyglot-signature.bin", "origin": "gen", "what": "two signatures, neither followed: ambiguous", "sha256": "a3176c6bb7275052337fe339ac5e18e2e7de05adfd503d430ec6d45c8b45b023", "result": { "format": "wai.identify/1", "size": 512, "verdict": "ambiguous", "candidates": [ { "id": "gzip", "kind": "compression", "strength": "signature", "evidence": [ { "at": 0, "len": 3, "is": "signature" } ], "walked_to": null, "stopped": null, "facts": {}, "tracks": [], "capabilities": [] }, { "id": "tar", "kind": "compression", "strength": "signature", "evidence": [ { "at": 257, "len": 5, "is": "signature" } ], "walked_to": null, "stopped": null, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 512, "distinct_bytes": 9, "zero_bytes": 504, "chi_square": 126500, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/embedded.bin", "origin": "gen", "what": "unknown, with what is inside it", "sha256": "008e023a956a29a400dd803805531475b609b7df74896d22b56c99a55a359fb7", "result": { "format": "wai.identify/1", "size": 4096, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [ { "at": 100, "id": "png" }, { "at": 996, "id": "isobmff" }, { "at": 2000, "id": "flac" } ], "embedded_capped": false, "measures": { "scanned": 4096, "distinct_bytes": 256, "zero_bytes": 19, "chi_square": 241, "windows": 1, "uniform_windows": 1, "text": false, "periods": [] } } }, { "file": "gen/embedded-capped.bin", "origin": "gen", "what": "more inside it than is reported", "sha256": "7e72cd2afe6d6f319acbe908a1b357e3c44218f1acc0432eb062d3200f041923", "result": { "format": "wai.identify/1", "size": 396, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [ { "at": 4, "id": "png" }, { "at": 16, "id": "png" }, { "at": 28, "id": "png" }, { "at": 40, "id": "png" }, { "at": 52, "id": "png" }, { "at": 64, "id": "png" }, { "at": 76, "id": "png" }, { "at": 88, "id": "png" }, { "at": 100, "id": "png" }, { "at": 112, "id": "png" }, { "at": 124, "id": "png" }, { "at": 136, "id": "png" }, { "at": 148, "id": "png" }, { "at": 160, "id": "png" }, { "at": 172, "id": "png" }, { "at": 184, "id": "png" }, { "at": 196, "id": "png" }, { "at": 208, "id": "png" }, { "at": 220, "id": "png" }, { "at": 232, "id": "png" }, { "at": 244, "id": "png" }, { "at": 256, "id": "png" }, { "at": 268, "id": "png" }, { "at": 280, "id": "png" }, { "at": 292, "id": "png" }, { "at": 304, "id": "png" }, { "at": 316, "id": "png" }, { "at": 328, "id": "png" }, { "at": 340, "id": "png" }, { "at": 352, "id": "png" }, { "at": 364, "id": "png" }, { "at": 376, "id": "png" } ], "embedded_capped": true, "measures": { "scanned": 396, "distinct_bytes": 8, "zero_bytes": 0, "chi_square": 17908, "windows": 0, "uniform_windows": 0, "text": false, "periods": [ { "lag": 12, "z": 37 } ] } } }, { "file": "gen/embedded-at-start.bin", "origin": "gen", "what": "a signature at the file's own start is not embedded", "sha256": "80a56b2448f940db29beb712c40a9fe5888aa0388c97117262b67d57b0d855e1", "result": { "format": "wai.identify/1", "size": 32, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 28, "len": 4, "is": "box:free" } ], "walked_to": 32, "stopped": null, "facts": { "major_brand": "isom", "compatible_brands": [ "\\x00\\x00\\x00\\x00", "\\x00\\x00\\x00\\x00" ], "boxes": [ "ftyp", "free" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 32, "distinct_bytes": 13, "zero_bytes": 18, "chi_square": 2704, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/tiff-then-png.bin", "origin": "gen", "what": "a signature, and another inside", "sha256": "dd0b68a58ff75412209d164ea283fa06a944ce15419b6b47f86b93d56880901c", "result": { "format": "wai.identify/1", "size": 20, "verdict": "signature_only", "candidates": [ { "id": "tiff", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": null, "stopped": null, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [ { "at": 12, "id": "png" } ], "embedded_capped": false, "measures": { "scanned": 20, "distinct_bytes": 10, "zero_bytes": 9, "chi_square": 1208, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/wai1.bin", "origin": "gen", "what": "a WAI1 envelope", "sha256": "48aeff0ef9579c9db5f31aeeed27c35362c8f2fddaa7243da3ef0b2c89f473cc", "result": { "format": "wai.identify/1", "size": 68, "verdict": "identified", "candidates": [ { "id": "wai", "kind": "wai", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "magic:WAI1" }, { "at": 8, "len": 52, "is": "manifest" }, { "at": 60, "len": 4, "is": "payload_length" } ], "walked_to": 68, "stopped": null, "facts": { "version": 1, "capability": "wai.image.png" }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 68, "distinct_bytes": 32, "zero_bytes": 6, "chi_square": 737, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/wai1-cut.bin", "origin": "gen", "what": "a WAI1 envelope whose payload does not fit", "sha256": "df676c81723eb54fa658622f07827a0e890142444f883149bbcf879310aa2477", "result": { "format": "wai.identify/1", "size": 66, "verdict": "signature_only", "candidates": [ { "id": "wai", "kind": "wai", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "magic:WAI1" }, { "at": 8, "len": 52, "is": "manifest" }, { "at": 60, "len": 4, "is": "payload_length" } ], "walked_to": 60, "stopped": { "at": 60, "why": "overrun" }, "facts": { "version": 1, "capability": "wai.image.png" }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 66, "distinct_bytes": 32, "zero_bytes": 6, "chi_square": 733, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/wai1-no-length.bin", "origin": "gen", "what": "a WAI1 envelope with no payload length", "sha256": "ef08ad554fc5303edfe796f143b54ff15782ae9a0328f9ad4f4e62d64a57cc93", "result": { "format": "wai.identify/1", "size": 62, "verdict": "signature_only", "candidates": [ { "id": "wai", "kind": "wai", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "magic:WAI1" }, { "at": 8, "len": 52, "is": "manifest" } ], "walked_to": 60, "stopped": { "at": 60, "why": "overrun" }, "facts": { "version": 1, "capability": "wai.image.png" }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 62, "distinct_bytes": 31, "zero_bytes": 4, "chi_square": 689, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/wai1-short.bin", "origin": "gen", "what": "a WAI1 magic and no manifest length", "sha256": "adcdccf5fec8c5000bea4bb51a07b5d6c901359030cd71b194c2f3376fc46d7b", "result": { "format": "wai.identify/1", "size": 5, "verdict": "signature_only", "candidates": [ { "id": "wai", "kind": "wai", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "magic:WAI1" } ], "walked_to": 0, "stopped": { "at": 0, "why": "overrun" }, "facts": { "version": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 5, "distinct_bytes": 5, "zero_bytes": 1, "chi_square": 251, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/wai1-bad-json.bin", "origin": "gen", "what": "a WAI1 manifest that is not JSON", "sha256": "8a0513166fd067c05c053c671d93d903ba070a13e03cc214c636f9c92981a0c9", "result": { "format": "wai.identify/1", "size": 14, "verdict": "signature_only", "candidates": [ { "id": "wai", "kind": "wai", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "magic:WAI1" } ], "walked_to": 8, "stopped": { "at": 8, "why": "invalid" }, "facts": { "version": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 14, "distinct_bytes": 7, "zero_bytes": 7, "chi_square": 1046, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/wai1-huge.bin", "origin": "gen", "what": "a WAI1 manifest past the limit", "sha256": "5f0a24d5104f0648ed102817a2cbf7304fe737a48e7cf5bcbc45c7814a8281d6", "result": { "format": "wai.identify/1", "size": 10, "verdict": "signature_only", "candidates": [ { "id": "wai", "kind": "wai", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "magic:WAI1" } ], "walked_to": 8, "stopped": { "at": 8, "why": "limit" }, "facts": { "version": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 10, "distinct_bytes": 8, "zero_bytes": 3, "chi_square": 399, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/wai1-long.bin", "origin": "gen", "what": "a WAI1 manifest past the file", "sha256": "5a909ce326fc8473b92cb32edf48d3608ce17b4008ee8f5903d61ca292ed5e67", "result": { "format": "wai.identify/1", "size": 10, "verdict": "signature_only", "candidates": [ { "id": "wai", "kind": "wai", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "magic:WAI1" } ], "walked_to": 8, "stopped": { "at": 8, "why": "overrun" }, "facts": { "version": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 10, "distinct_bytes": 8, "zero_bytes": 3, "chi_square": 399, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/wai2.bin", "origin": "gen", "what": "a WAI2 envelope", "sha256": "6e3e930ee143a165d0180ece870ac021a3339e9ac767a275a58528df777e110a", "result": { "format": "wai.identify/1", "size": 12, "verdict": "identified", "candidates": [ { "id": "wai", "kind": "wai", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "magic:WAI2" }, { "at": 8, "len": 2, "is": "manifest" }, { "at": 10, "len": 2, "is": "rendition_count" } ], "walked_to": 12, "stopped": null, "facts": { "version": 2, "renditions": 3 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 12, "distinct_bytes": 9, "zero_bytes": 4, "chi_square": 500, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/wai2-no-count.bin", "origin": "gen", "what": "a WAI2 envelope with no rendition count", "sha256": "b6ceec2ec300c1ad76ee6be07f7944fcfc8c9b9cf6ee7eb1d56be1d08a01d4e8", "result": { "format": "wai.identify/1", "size": 10, "verdict": "signature_only", "candidates": [ { "id": "wai", "kind": "wai", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "magic:WAI2" }, { "at": 8, "len": 2, "is": "manifest" } ], "walked_to": 10, "stopped": { "at": 10, "why": "overrun" }, "facts": { "version": 2 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 10, "distinct_bytes": 8, "zero_bytes": 3, "chi_square": 399, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/iso-tracks.bin", "origin": "gen", "what": "tracks from fixed values: esds with each flag, both tkhd versions, a handler with no name", "sha256": "67ebba234357ef2ec0bb83697ccc5a1d48d45332a8dda9b7ff9561e42efbd200", "result": { "format": "wai.identify/1", "size": 849, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 24, "len": 4, "is": "box:moov" } ], "walked_to": 849, "stopped": null, "facts": { "major_brand": "M4A ", "compatible_brands": [ "mp42" ], "boxes": [ "ftyp", "moov" ] }, "tracks": [ { "track": 7, "media": "audio", "stated": "mp4a", "codec": "mp3", "width": null, "height": null, "channels": 2, "sample_rate": 44100, "protected": null }, { "track": 9, "media": "audio", "stated": "mp4a", "codec": "aac", "width": null, "height": null, "channels": 2, "sample_rate": 48000, "protected": null }, { "track": 9, "media": "audio", "stated": "mp4a", "codec": null, "width": null, "height": null, "channels": 2, "sample_rate": 48000, "protected": null }, { "track": 7, "media": "text", "stated": "stpp", "codec": "ttml", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 7, "media": "other", "stated": "zzzz", "codec": null, "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.audio.aac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 849, "distinct_bytes": 54, "zero_bytes": 552, "chi_square": 92126, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/iso-protected.bin", "origin": "gen", "what": "protected audio, with and without what it protects stated", "sha256": "eb212a7b17c9d9576ce51f7068bf260e6931aa5ecf44cfa1d4c432f3c0c28e96", "result": { "format": "wai.identify/1", "size": 360, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 20, "len": 4, "is": "box:moov" } ], "walked_to": 360, "stopped": null, "facts": { "major_brand": "iso6", "compatible_brands": [], "boxes": [ "ftyp", "moov" ] }, "tracks": [ { "track": 7, "media": "audio", "stated": "enca", "codec": null, "width": null, "height": null, "channels": 2, "sample_rate": 48000, "protected": { "scheme": "cbcs", "original": "mp4a" } }, { "track": 7, "media": "audio", "stated": "enca", "codec": null, "width": null, "height": null, "channels": 2, "sample_rate": 48000, "protected": { "scheme": null, "original": null } } ], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 360, "distinct_bytes": 41, "zero_bytes": 223, "chi_square": 35559, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/iso-large.bin", "origin": "gen", "what": "a 64-bit size, a box to the file's end, and a brand with a capability", "sha256": "feb9728bba233cff2a27f69d3057b6122186f61325cffa996c2b2ad59110294e", "result": { "format": "wai.identify/1", "size": 55, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 24, "len": 4, "is": "box:mdat" }, { "at": 48, "len": 4, "is": "box:mdat" } ], "walked_to": 55, "stopped": null, "facts": { "major_brand": "avif", "compatible_brands": [ "mif1" ], "boxes": [ "ftyp", "mdat" ] }, "tracks": [], "capabilities": [ "wai.image.avif" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 55, "distinct_bytes": 17, "zero_bytes": 21, "chi_square": 2556, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/iso-bad-large.bin", "origin": "gen", "what": "a 64-bit size below its header", "sha256": "b23fdfe32493f8d2fe5c9819aa1e592510104971b45fa4f94e3562ae920f85b4", "result": { "format": "wai.identify/1", "size": 32, "verdict": "signature_only", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "signature", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" } ], "walked_to": 16, "stopped": { "at": 16, "why": "invalid" }, "facts": { "major_brand": "isom", "compatible_brands": [], "boxes": [ "ftyp" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 32, "distinct_bytes": 14, "zero_bytes": 17, "chi_square": 2432, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/iso-short-large.bin", "origin": "gen", "what": "a 64-bit size that does not read", "sha256": "3e96c6268d48b81f12f55e8c32e4b52aa6cca302f63c1004a791bb8144608581", "result": { "format": "wai.identify/1", "size": 28, "verdict": "signature_only", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "signature", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" } ], "walked_to": 16, "stopped": { "at": 16, "why": "overrun" }, "facts": { "major_brand": "isom", "compatible_brands": [], "boxes": [ "ftyp" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 28, "distinct_bytes": 13, "zero_bytes": 14, "chi_square": 1928, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/iso-tiny-box.bin", "origin": "gen", "what": "a size below a header", "sha256": "ac4ad06ea6f770bc4ec6369b2fedbb5be8ab9a0edc02347935f812da2c8af5e7", "result": { "format": "wai.identify/1", "size": 24, "verdict": "signature_only", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "signature", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" } ], "walked_to": 16, "stopped": { "at": 16, "why": "invalid" }, "facts": { "major_brand": "isom", "compatible_brands": [], "boxes": [ "ftyp" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 24, "distinct_bytes": 13, "zero_bytes": 10, "chi_square": 1234, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/iso-short-ftyp.bin", "origin": "gen", "what": "ftyp with too little in it", "sha256": "9645adf7ec25b3c6a32d621524d1c5acc306542367e15840e94e045b96f0ed2b", "result": { "format": "wai.identify/1", "size": 20, "verdict": "signature_only", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "signature", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" } ], "walked_to": 0, "stopped": { "at": 0, "why": "invalid" }, "facts": { "boxes": [ "ftyp" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 20, "distinct_bytes": 13, "zero_bytes": 6, "chi_square": 671, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/iso-fragments.bin", "origin": "gen", "what": "fragments counted", "sha256": "fe7ba38587f139d721bfe4311ac890bdc909bb4795ac31a38108f019efbb5b75", "result": { "format": "wai.identify/1", "size": 50, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:styp" }, { "at": 20, "len": 4, "is": "box:moof" }, { "at": 28, "len": 4, "is": "box:mdat" }, { "at": 37, "len": 4, "is": "box:moof" }, { "at": 45, "len": 4, "is": "box:mdat" } ], "walked_to": 50, "stopped": null, "facts": { "boxes": [ "styp", "moof", "mdat" ], "fragments": 2 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 50, "distinct_bytes": 16, "zero_bytes": 19, "chi_square": 2233, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/iso-many-boxes.bin", "origin": "gen", "what": "more boxes than a walk reads: limit", "sha256": "579762db4469c006f0a1beb6b46184e8e48cf788a3b4c7c464c2449f28d3bb99", "result": { "format": "wai.identify/1", "size": 32776, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:free" }, { "at": 12, "len": 4, "is": "box:free" }, { "at": 20, "len": 4, "is": "box:free" }, { "at": 28, "len": 4, "is": "box:free" }, { "at": 36, "len": 4, "is": "box:free" }, { "at": 44, "len": 4, "is": "box:free" }, { "at": 52, "len": 4, "is": "box:free" }, { "at": 60, "len": 4, "is": "box:free" } ], "walked_to": 32768, "stopped": { "at": 32768, "why": "limit" }, "facts": { "boxes": [ "free" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 32776, "distinct_bytes": 5, "zero_bytes": 12291, "chi_square": 2064888, "windows": 8, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mkv-tracks.bin", "origin": "gen", "what": "tracks from fixed values, protection, unprintable bytes, a known Cluster", "sha256": "f3c1bd075d438f76cdae1850942a8811f7d334c42bc6de28b599f0ebb451f16b", "result": { "format": "wai.identify/1", "size": 148, "verdict": "identified", "candidates": [ { "id": "matroska", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "ebml" }, { "at": 20, "len": 4, "is": "segment" }, { "at": 32, "len": 4, "is": "tracks" } ], "walked_to": 148, "stopped": null, "facts": { "doc_type": "matroska", "doc_type_version": 4, "clusters": 1 }, "tracks": [ { "track": 1, "media": "audio", "stated": "A_AAC/MPEG4/LC", "codec": "aac", "width": null, "height": null, "channels": 2, "sample_rate": 44100, "protected": { "scheme": null, "original": null } }, { "track": 2, "media": "other", "stated": "S_\\xffNOT\\x5cKNOWN", "codec": null, "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 3, "media": "text", "stated": "S_TEXT/WEBVTT", "codec": "webvtt", "width": null, "height": null, "channels": null, "sample_rate": 48000, "protected": null } ], "capabilities": [ "wai.audio.aac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 148, "distinct_bytes": 75, "zero_bytes": 9, "chi_square": 727, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mkv-unknown-cluster.bin", "origin": "gen", "what": "a Cluster of unknown size stops the walk", "sha256": "8d5ed7c93536090545b91f084eb4ba17356462089fdba7aaeb4205633351b5bc", "result": { "format": "wai.identify/1", "size": 144, "verdict": "identified", "candidates": [ { "id": "matroska", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "ebml" }, { "at": 20, "len": 4, "is": "segment" }, { "at": 32, "len": 4, "is": "tracks" } ], "walked_to": 139, "stopped": { "at": 139, "why": "unknown_size" }, "facts": { "doc_type": "matroska", "doc_type_version": 4 }, "tracks": [ { "track": 1, "media": "audio", "stated": "A_AAC/MPEG4/LC", "codec": "aac", "width": null, "height": null, "channels": 2, "sample_rate": 44100, "protected": { "scheme": null, "original": null } }, { "track": 2, "media": "other", "stated": "S_\\xffNOT\\x5cKNOWN", "codec": null, "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 3, "media": "text", "stated": "S_TEXT/WEBVTT", "codec": "webvtt", "width": null, "height": null, "channels": null, "sample_rate": 48000, "protected": null } ], "capabilities": [ "wai.audio.aac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 144, "distinct_bytes": 75, "zero_bytes": 5, "chi_square": 677, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mkv-no-segment.bin", "origin": "gen", "what": "no Segment after the header", "sha256": "24171b24df2aba62de855c6b98588290a3b575213aa2cf03c58cf141a978deac", "result": { "format": "wai.identify/1", "size": 29, "verdict": "signature_only", "candidates": [ { "id": "matroska", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "ebml" } ], "walked_to": 20, "stopped": { "at": 20, "why": "invalid" }, "facts": { "doc_type": "matroska", "doc_type_version": 4 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 29, "distinct_bytes": 24, "zero_bytes": 4, "chi_square": 368, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mkv-header-only.bin", "origin": "gen", "what": "nothing after the header", "sha256": "ffae88836c79fef496ddc3eb5f04b8c8978c5a5ca4cdb2eb718ca55b8df899bf", "result": { "format": "wai.identify/1", "size": 20, "verdict": "signature_only", "candidates": [ { "id": "matroska", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "ebml" } ], "walked_to": 20, "stopped": { "at": 20, "why": "overrun" }, "facts": { "doc_type": "matroska", "doc_type_version": 4 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 20, "distinct_bytes": 18, "zero_bytes": 0, "chi_square": 287, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mkv-bad-child.bin", "origin": "gen", "what": "a Segment child that does not parse", "sha256": "8820c6f15bf5913062f307abcb8ca5cb4dcd45bb5eef2f14d0ca1c00b9073016", "result": { "format": "wai.identify/1", "size": 48, "verdict": "signature_only", "candidates": [ { "id": "matroska", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "ebml" }, { "at": 20, "len": 4, "is": "segment" } ], "walked_to": 32, "stopped": { "at": 32, "why": "invalid" }, "facts": { "doc_type": "matroska", "doc_type_version": 4 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 48, "distinct_bytes": 25, "zero_bytes": 16, "chi_square": 1733, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mkv-short-child.bin", "origin": "gen", "what": "a Segment child that does not parse, near the end", "sha256": "d5c4bed1be3c0a6d580e791df78ccfd68ca596552f480d46b458c18e5156a1bd", "result": { "format": "wai.identify/1", "size": 36, "verdict": "signature_only", "candidates": [ { "id": "matroska", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "ebml" }, { "at": 20, "len": 4, "is": "segment" } ], "walked_to": 32, "stopped": { "at": 32, "why": "overrun" }, "facts": { "doc_type": "matroska", "doc_type_version": 4 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 36, "distinct_bytes": 25, "zero_bytes": 4, "chi_square": 632, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mkv-overrun-segment.bin", "origin": "gen", "what": "a Segment declaring more than the file holds, its one Cluster whole", "sha256": "ae21a3861a22506c599118c107faf9610413db8ff320d5dfc7b479d7c0937469", "result": { "format": "wai.identify/1", "size": 34, "verdict": "identified", "candidates": [ { "id": "matroska", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "ebml" }, { "at": 20, "len": 4, "is": "segment" } ], "walked_to": 34, "stopped": null, "facts": { "doc_type": "matroska", "doc_type_version": 4, "segment_overruns_by": 7, "clusters": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 34, "distinct_bytes": 29, "zero_bytes": 4, "chi_square": 342, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mkv-overrun-cluster.bin", "origin": "gen", "what": "a Cluster past the file", "sha256": "a28c727486d1f9adf6931dafcab63850aa01189a52fc1ef7df19d202ea971269", "result": { "format": "wai.identify/1", "size": 38, "verdict": "signature_only", "candidates": [ { "id": "matroska", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "ebml" }, { "at": 20, "len": 4, "is": "segment" } ], "walked_to": 32, "stopped": { "at": 32, "why": "overrun" }, "facts": { "doc_type": "matroska", "doc_type_version": 4, "clusters": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 38, "distinct_bytes": 29, "zero_bytes": 1, "chi_square": 541, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mkv-bad-header.bin", "origin": "gen", "what": "an EBML header of unknown size", "sha256": "e9b8da6571d31483611747dc0f50917669e24ea44e6c52581fd2b1814bbdbcb0", "result": { "format": "wai.identify/1", "size": 7, "verdict": "signature_only", "candidates": [ { "id": "matroska", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "ebml" } ], "walked_to": 0, "stopped": { "at": 0, "why": "invalid" }, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 7, "distinct_bytes": 7, "zero_bytes": 0, "chi_square": 249, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ts-programs.bin", "origin": "gen", "what": "two programs: protected at each level, scrambled packets, an adaptation field, a type with no name", "sha256": "fc5964d699b3ed9a87715718645538781c06b4d1c2b122c63e9d66d2cbd0dfc6", "result": { "format": "wai.identify/1", "size": 1316, "verdict": "identified", "candidates": [ { "id": "mpeg-ts", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 1, "is": "sync" }, { "at": 5, "len": 24, "is": "pat" }, { "at": 193, "len": 42, "is": "pmt" }, { "at": 381, "len": 27, "is": "pmt" } ], "walked_to": 1316, "stopped": null, "facts": { "packet_size": 188, "packets_read": 7, "scrambled_packets": 4, "programs": 2 }, "tracks": [ { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 273, "media": "audio", "stated": "stream_type:0x87", "codec": "eac3", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": { "scheme": null, "original": null } }, { "track": 274, "media": "video", "stated": "stream_type:0x02", "codec": null, "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 275, "media": "other", "stated": "stream_type:0xc0", "codec": null, "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 288, "media": "video", "stated": "stream_type:0x24", "codec": "hevc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": { "scheme": null, "original": null } } ], "capabilities": [ "wai.audio.eac3", "wai.video.avc", "wai.video.hevc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1316, "distinct_bytes": 41, "zero_bytes": 29, "chi_square": 143918, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ts-204.bin", "origin": "gen", "what": "packets of 204 bytes", "sha256": "f5e970d5b1322a4c04de3d2314ab257b13192e5589bd9a2844e6852453ac9e5a", "result": { "format": "wai.identify/1", "size": 4488, "verdict": "identified", "candidates": [ { "id": "mpeg-ts", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 1, "is": "sync" }, { "at": 209, "len": 16, "is": "pat" }, { "at": 413, "len": 26, "is": "pmt" } ], "walked_to": 4488, "stopped": null, "facts": { "packet_size": 204, "packets_read": 22, "scrambled_packets": 0, "programs": 1 }, "tracks": [ { "track": 256, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 257, "media": "audio", "stated": "stream_type:0x0f", "codec": "aac", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.audio.aac", "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 4488, "distinct_bytes": 253, "zero_bytes": 546, "chi_square": 139471, "windows": 1, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ts-offset.bin", "origin": "gen", "what": "packets that start past three bytes of something else", "sha256": "a115d9d73e64a34def70d31dd89c6523a2a512c2c53298dc39710ee23008ff5d", "result": { "format": "wai.identify/1", "size": 2259, "verdict": "identified", "candidates": [ { "id": "mpeg-ts", "kind": "container", "strength": "structure", "evidence": [ { "at": 3, "len": 1, "is": "sync" }, { "at": 196, "len": 16, "is": "pat" }, { "at": 384, "len": 27, "is": "pmt" } ], "walked_to": 2259, "stopped": null, "facts": { "packet_size": 188, "packets_read": 12, "scrambled_packets": 0, "programs": 1 }, "tracks": [ { "track": 256, "media": "video", "stated": "stream_type:0x24", "codec": "hevc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.hevc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 2259, "distinct_bytes": 229, "zero_bytes": 140, "chi_square": 216055, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ts-split-pmt.bin", "origin": "gen", "what": "a section across two packets", "sha256": "0b10d6e7e986c2e3dfacd06151c18a3e7bf465ce18fca62140c2017b648609b8", "result": { "format": "wai.identify/1", "size": 940, "verdict": "identified", "candidates": [ { "id": "mpeg-ts", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 1, "is": "sync" }, { "at": 5, "len": 16, "is": "pat" }, { "at": 193, "len": 216, "is": "pmt" } ], "walked_to": 940, "stopped": null, "facts": { "packet_size": 188, "packets_read": 5, "scrambled_packets": 0, "programs": 1 }, "tracks": [ { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 940, "distinct_bytes": 24, "zero_bytes": 57, "chi_square": 130051, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ogg-streams.bin", "origin": "gen", "what": "one stream of each kind of first packet", "sha256": "47716e109ba1f92db778b1b012ddaecf603a08b0707f8e7cf54e5394b1bae115", "result": { "format": "wai.identify/1", "size": 176, "verdict": "identified", "candidates": [ { "id": "ogg", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 35, "is": "page" }, { "at": 35, "len": 35, "is": "page" }, { "at": 70, "len": 38, "is": "page" }, { "at": 108, "len": 38, "is": "page" }, { "at": 146, "len": 30, "is": "page" } ], "walked_to": 176, "stopped": null, "facts": { "pages_read": 5 }, "tracks": [ { "track": 1, "media": "audio", "stated": "FLAC", "codec": "flac", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 2, "media": "video", "stated": "theora", "codec": "theora", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 3, "media": "audio", "stated": "Speex", "codec": "speex", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 4, "media": "other", "stated": "fishead\\x00", "codec": null, "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 5, "media": "other", "stated": "zz", "codec": null, "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.audio.flac" ] } ], "probes_accepted": [], "embedded": [ { "at": 35, "id": "ogg" }, { "at": 70, "id": "ogg" }, { "at": 108, "id": "ogg" }, { "at": 146, "id": "ogg" } ], "embedded_capped": false, "measures": { "scanned": 176, "distinct_bytes": 47, "zero_bytes": 82, "chi_square": 10174, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ogg-one-page.bin", "origin": "gen", "what": "one page to the file's end, its header cut short", "sha256": "0f6e7f19d386cd58e5ed228ff9fd5b788d71cba27b3a26f5e099a2c46bb595b0", "result": { "format": "wai.identify/1", "size": 38, "verdict": "identified", "candidates": [ { "id": "ogg", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 38, "is": "page" } ], "walked_to": 38, "stopped": null, "facts": { "pages_read": 1 }, "tracks": [ { "track": 1, "media": "audio", "stated": "OpusHead", "codec": "opus", "width": null, "height": null, "channels": 2, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.audio.opus" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 38, "distinct_bytes": 18, "zero_bytes": 16, "chi_square": 1915, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ogg-one-of-two.bin", "origin": "gen", "what": "one page, and a header cut short", "sha256": "5a92f0a7388cc1527970c96e90d7f3b9f7ef5a5505ed8905fe1a406b3b9467da", "result": { "format": "wai.identify/1", "size": 35, "verdict": "signature_only", "candidates": [ { "id": "ogg", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 30, "is": "page" } ], "walked_to": 30, "stopped": { "at": 30, "why": "overrun" }, "facts": { "pages_read": 1 }, "tracks": [ { "track": 1, "media": "other", "stated": "zz", "codec": null, "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 35, "distinct_bytes": 11, "zero_bytes": 17, "chi_square": 2371, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ogg-bad-page.bin", "origin": "gen", "what": "one page, and bytes that are not one", "sha256": "0630fca4ab56b09a4a575201ad769fe234aab28c3ee6bf12bd65e82d00762c08", "result": { "format": "wai.identify/1", "size": 60, "verdict": "signature_only", "candidates": [ { "id": "ogg", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 30, "is": "page" } ], "walked_to": 30, "stopped": { "at": 30, "why": "invalid" }, "facts": { "pages_read": 1 }, "tracks": [ { "track": 1, "media": "other", "stated": "zz", "codec": null, "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 60, "distinct_bytes": 11, "zero_bytes": 46, "chi_square": 9062, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ogg-many-pages.bin", "origin": "gen", "what": "more pages than a walk reads: limit", "sha256": "ede353845f7e49b3408feccd229e7f00e29da0c82dcad993fa0475a537bb0e3f", "result": { "format": "wai.identify/1", "size": 7453, "verdict": "identified", "candidates": [ { "id": "ogg", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 29, "is": "page" }, { "at": 29, "len": 29, "is": "page" }, { "at": 58, "len": 29, "is": "page" }, { "at": 87, "len": 29, "is": "page" }, { "at": 116, "len": 29, "is": "page" }, { "at": 145, "len": 29, "is": "page" }, { "at": 174, "len": 29, "is": "page" }, { "at": 203, "len": 29, "is": "page" } ], "walked_to": 7424, "stopped": { "at": 7424, "why": "limit" }, "facts": { "pages_read": 256 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 7453, "distinct_bytes": 10, "zero_bytes": 4369, "chi_square": 693572, "windows": 1, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/riff-webp-vp8x.bin", "origin": "gen", "what": "the extended form of WebP", "sha256": "4c5e8dadb2b5a14b406d42618332b05d8d894752f498d6d4dda832d373468649", "result": { "format": "wai.identify/1", "size": 30, "verdict": "identified", "candidates": [ { "id": "webp", "kind": "image", "strength": "structure", "evidence": [ { "at": 8, "len": 4, "is": "form:WEBP" }, { "at": 12, "len": 4, "is": "chunk:VP8X" } ], "walked_to": 30, "stopped": null, "facts": { "form": "WEBP", "coding": "extended", "width": 16, "height": 32, "chunks": [ "VP8X" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 30, "distinct_bytes": 15, "zero_bytes": 14, "chi_square": 1813, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/riff-webp-short.bin", "origin": "gen", "what": "WebP's forms too short to read", "sha256": "a591e0c7479aa8ea489e7415f8baec93ad41d81e8e7999e4fb604b0d58b66876", "result": { "format": "wai.identify/1", "size": 44, "verdict": "identified", "candidates": [ { "id": "webp", "kind": "image", "strength": "structure", "evidence": [ { "at": 8, "len": 4, "is": "form:WEBP" }, { "at": 12, "len": 4, "is": "chunk:VP8X" }, { "at": 24, "len": 4, "is": "chunk:VP8L" }, { "at": 34, "len": 4, "is": "chunk:VP8 " } ], "walked_to": 44, "stopped": null, "facts": { "form": "WEBP", "coding": "lossless", "width": 5633, "height": 8514, "chunks": [ "VP8X", "VP8L", "VP8 " ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 44, "distinct_bytes": 18, "zero_bytes": 19, "chi_square": 2353, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/riff-avi.bin", "origin": "gen", "what": "an AVI's form", "sha256": "4159bad5b5e233fefebe311f0bb09d6fb4ce530fefb2b47a5f724cf9208f546e", "result": { "format": "wai.identify/1", "size": 24, "verdict": "identified", "candidates": [ { "id": "avi", "kind": "container", "strength": "structure", "evidence": [ { "at": 8, "len": 4, "is": "form:AVI " }, { "at": 12, "len": 4, "is": "chunk:LIST" } ], "walked_to": 24, "stopped": null, "facts": { "form": "AVI ", "chunks": [ "LIST" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 24, "distinct_bytes": 16, "zero_bytes": 6, "chi_square": 637, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/riff-other.bin", "origin": "gen", "what": "a form with no name here, an odd chunk padded", "sha256": "9d0b9b69dd14558262557a712074db37136ce09f19b1046da38562e9d58ce24c", "result": { "format": "wai.identify/1", "size": 24, "verdict": "identified", "candidates": [ { "id": "riff", "kind": "container", "strength": "structure", "evidence": [ { "at": 8, "len": 4, "is": "form:RMID" }, { "at": 12, "len": 4, "is": "chunk:data" } ], "walked_to": 24, "stopped": null, "facts": { "form": "RMID", "chunks": [ "data" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 24, "distinct_bytes": 13, "zero_bytes": 7, "chi_square": 786, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/riff-wave-extensible.bin", "origin": "gen", "what": "the extensible form of a wave header", "sha256": "26bed6294b3c082f55971592e9792ec3f6c0b7ad5d22c5ed4f3787fbbfc798f1", "result": { "format": "wai.identify/1", "size": 72, "verdict": "identified", "candidates": [ { "id": "wave", "kind": "audio", "strength": "structure", "evidence": [ { "at": 8, "len": 4, "is": "form:WAVE" }, { "at": 12, "len": 4, "is": "chunk:fmt " }, { "at": 60, "len": 4, "is": "chunk:data" } ], "walked_to": 72, "stopped": null, "facts": { "form": "WAVE", "format_tag": 3, "channels": 2, "sample_rate": 48000, "bits_per_sample": 16, "data_bytes": 4, "chunks": [ "fmt ", "data" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 72, "distinct_bytes": 25, "zero_bytes": 42, "chi_square": 6349, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/riff-trailing.bin", "origin": "gen", "what": "bytes past the declared end", "sha256": "35a607de84e9e8d6b6d1d44a8ea17dfd42f74385114f8f81b2cd67d6aa68bf85", "result": { "format": "wai.identify/1", "size": 30, "verdict": "identified", "candidates": [ { "id": "wave", "kind": "audio", "strength": "structure", "evidence": [ { "at": 8, "len": 4, "is": "form:WAVE" }, { "at": 12, "len": 4, "is": "chunk:data" } ], "walked_to": 24, "stopped": null, "facts": { "form": "WAVE", "declared_size": 24, "data_bytes": 4, "chunks": [ "data" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 30, "distinct_bytes": 14, "zero_bytes": 10, "chi_square": 1284, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/riff-short-chunk.bin", "origin": "gen", "what": "a chunk header cut by the declared end", "sha256": "b6143e43a3175fb5962ece5774bf4602dfe89d2c14b30d8c0906cc111c203a14", "result": { "format": "wai.identify/1", "size": 16, "verdict": "signature_only", "candidates": [ { "id": "wave", "kind": "audio", "strength": "signature", "evidence": [ { "at": 8, "len": 4, "is": "form:WAVE" } ], "walked_to": 12, "stopped": { "at": 12, "why": "overrun" }, "facts": { "form": "WAVE", "chunks": [] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 16, "distinct_bytes": 13, "zero_bytes": 3, "chi_square": 368, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/riff-short.bin", "origin": "gen", "what": "RIFF with no form: no candidate", "sha256": "fc75f750de1080cbd5968195140f196cb8f99cbfdf60cef272365362ecea1ebe", "result": { "format": "wai.identify/1", "size": 7, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 7, "distinct_bytes": 5, "zero_bytes": 2, "chi_square": 395, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/gif-local.bin", "origin": "gen", "what": "a local colour table, no trailer", "sha256": "60a74ad9ebe06dc2f3f1db005c389fcb90dd1dfd0c6db3519fcdd48f19fe5280", "result": { "format": "wai.identify/1", "size": 42, "verdict": "identified", "candidates": [ { "id": "gif", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 6, "is": "signature:GIF89a" }, { "at": 21, "len": 10, "is": "image" } ], "walked_to": 42, "stopped": { "at": 42, "why": "overrun" }, "facts": { "width": 1, "height": 1, "frames_read": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 42, "distinct_bytes": 14, "zero_bytes": 25, "chi_square": 3993, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/gif-bad.bin", "origin": "gen", "what": "a block that is none: signature", "sha256": "e2ec7112b355e7dbc1cad62dd6efd22e0f6ca0851b6b1f11640d54ea268d5751", "result": { "format": "wai.identify/1", "size": 14, "verdict": "signature_only", "candidates": [ { "id": "gif", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 6, "is": "signature:GIF87a" } ], "walked_to": 13, "stopped": { "at": 13, "why": "invalid" }, "facts": { "width": 1, "height": 1, "frames_read": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 14, "distinct_bytes": 9, "zero_bytes": 5, "chi_square": 644, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/gif-trailer.bin", "origin": "gen", "what": "only a trailer", "sha256": "6cd593f7c7c6af86a8b400a992d0b29af6c8040c03f94853e74eedf6fbbf6c88", "result": { "format": "wai.identify/1", "size": 14, "verdict": "identified", "candidates": [ { "id": "gif", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 6, "is": "signature:GIF87a" }, { "at": 13, "len": 1, "is": "trailer" } ], "walked_to": 14, "stopped": null, "facts": { "width": 1, "height": 1, "frames_read": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 14, "distinct_bytes": 9, "zero_bytes": 5, "chi_square": 644, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/gif-cut-image.bin", "origin": "gen", "what": "an image descriptor cut", "sha256": "a7cca586740bdf4c2b69f60c25c278727ab74055b1adb0076c0d0ff7a60d4219", "result": { "format": "wai.identify/1", "size": 16, "verdict": "signature_only", "candidates": [ { "id": "gif", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 6, "is": "signature:GIF87a" } ], "walked_to": 13, "stopped": { "at": 13, "why": "overrun" }, "facts": { "width": 1, "height": 1, "frames_read": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 16, "distinct_bytes": 9, "zero_bytes": 7, "chi_square": 944, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/gif-cut-blocks.bin", "origin": "gen", "what": "sub-blocks cut", "sha256": "c2449dc5563c31f1beb3f0b91c248ae2702303616bb9128bb51206ce9596f67e", "result": { "format": "wai.identify/1", "size": 16, "verdict": "signature_only", "candidates": [ { "id": "gif", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 6, "is": "signature:GIF87a" } ], "walked_to": 13, "stopped": { "at": 13, "why": "overrun" }, "facts": { "width": 1, "height": 1, "frames_read": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 16, "distinct_bytes": 11, "zero_bytes": 5, "chi_square": 592, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ivf-short.bin", "origin": "gen", "what": "IVF too short for its header", "sha256": "a1ea93ce11ff8b2d72fd2152134cffe917770ed134135f04d8a542c05b764ac8", "result": { "format": "wai.identify/1", "size": 6, "verdict": "signature_only", "candidates": [ { "id": "ivf", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "dkif" } ], "walked_to": 0, "stopped": { "at": 0, "why": "overrun" }, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 6, "distinct_bytes": 5, "zero_bytes": 2, "chi_square": 335, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ivf-bad.bin", "origin": "gen", "what": "an IVF header length too small", "sha256": "7445d0a4a0028a047c3939f351eeecdcf742242534522c3a41013cb7abaab516", "result": { "format": "wai.identify/1", "size": 16, "verdict": "signature_only", "candidates": [ { "id": "ivf", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "dkif" } ], "walked_to": 0, "stopped": { "at": 0, "why": "invalid" }, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 16, "distinct_bytes": 10, "zero_bytes": 5, "chi_square": 656, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ivf-many.bin", "origin": "gen", "what": "more frames than a walk reads, and a fourcc with no name", "sha256": "2d3f28a3e9164887e3705897e20bcfa295bbd588adef4cf41b9f72699ecc6228", "result": { "format": "wai.identify/1", "size": 49196, "verdict": "identified", "candidates": [ { "id": "ivf", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "dkif" } ], "walked_to": 49184, "stopped": { "at": 49184, "why": "limit" }, "facts": { "frames_read": 4096 }, "tracks": [ { "track": null, "media": "video", "stated": "ZZZZ", "codec": null, "width": 16, "height": 16, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 49196, "distinct_bytes": 8, "zero_bytes": 49185, "chi_square": 12539348, "windows": 12, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ivf-past.bin", "origin": "gen", "what": "an IVF header length past the file", "sha256": "88a536de46cc629d28de8f16f841f49080b2453a9d5c202b0698b5b4c4905831", "result": { "format": "wai.identify/1", "size": 16, "verdict": "signature_only", "candidates": [ { "id": "ivf", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "dkif" } ], "walked_to": 16, "stopped": { "at": 16, "why": "overrun" }, "facts": { "frames_read": 0 }, "tracks": [ { "track": null, "media": "video", "stated": "VP80", "codec": "vp8", "width": 16, "height": 16, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.vp8" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 16, "distinct_bytes": 11, "zero_bytes": 5, "chi_square": 592, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/y4m-nl.bin", "origin": "gen", "what": "a header with no line end", "sha256": "b343fe7f3a02bef8a2d346273552bd4e03b9262f2c4237473ab083798577a8ec", "result": { "format": "wai.identify/1", "size": 15, "verdict": "signature_only", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "signature", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 0, "stopped": { "at": 0, "why": "overrun" }, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 15, "distinct_bytes": 12, "zero_bytes": 0, "chi_square": 377, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/y4m-long.bin", "origin": "gen", "what": "a header past 256 bytes", "sha256": "ec0989ec0bab8d4dad2839df562d6107c5150757abb1977b1a9056309a1382ee", "result": { "format": "wai.identify/1", "size": 300, "verdict": "signature_only", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "signature", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 0, "stopped": { "at": 0, "why": "invalid" }, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 300, "distinct_bytes": 10, "zero_bytes": 0, "chi_square": 71968, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/y4m-colour.bin", "origin": "gen", "what": "a colour with no size", "sha256": "0e28329e00d7a016ebd04f00d0f01e0852e29eed123f586821389ff0718711db", "result": { "format": "wai.identify/1", "size": 21, "verdict": "signature_only", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "signature", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 21, "stopped": { "at": 21, "why": "invalid" }, "facts": { "width": 2, "height": 2, "colour": "xyz" }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 21, "distinct_bytes": 17, "zero_bytes": 0, "chi_square": 381, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/y4m-nosize.bin", "origin": "gen", "what": "no dimensions", "sha256": "6e9c5350574829c9566ef2f2318610cde0fac5ee7df4f019e5922b177a21e82f", "result": { "format": "wai.identify/1", "size": 15, "verdict": "signature_only", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "signature", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 15, "stopped": { "at": 15, "why": "invalid" }, "facts": { "width": null, "height": null, "colour": "420" }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 15, "distinct_bytes": 13, "zero_bytes": 0, "chi_square": 309, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/y4m-10.bin", "origin": "gen", "what": "ten bits, odd dimensions", "sha256": "6d03df7dd30d95b072f990bf63109c3e063cecf93884c369dc54202f2f12120e", "result": { "format": "wai.identify/1", "size": 67, "verdict": "identified", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 67, "stopped": null, "facts": { "width": 3, "height": 3, "colour": "420p10", "frames_read": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 67, "distinct_bytes": 23, "zero_bytes": 34, "chi_square": 4583, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/y4m-422.bin", "origin": "gen", "what": "4:2:2", "sha256": "9ea94ca274c01601e7899775f54fe69a37d406466274a8f14ed3b3ebe34c107b", "result": { "format": "wai.identify/1", "size": 41, "verdict": "identified", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 41, "stopped": null, "facts": { "width": 3, "height": 2, "colour": "422", "frames_read": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 41, "distinct_bytes": 19, "zero_bytes": 14, "chi_square": 1513, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/y4m-444.bin", "origin": "gen", "what": "4:4:4", "sha256": "4accd3ebd2783c188a97e6eab8dc50539885df4a8867c33aee4dc6645a4c74fb", "result": { "format": "wai.identify/1", "size": 39, "verdict": "identified", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 39, "stopped": null, "facts": { "width": 2, "height": 2, "colour": "444", "frames_read": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 39, "distinct_bytes": 18, "zero_bytes": 12, "chi_square": 1280, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/y4m-mono.bin", "origin": "gen", "what": "mono", "sha256": "3cb674206538e36a07f770b582fe0f481a189e2e757aada91bfd45246f3766bf", "result": { "format": "wai.identify/1", "size": 32, "verdict": "identified", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 32, "stopped": null, "facts": { "width": 2, "height": 2, "colour": "mono", "frames_read": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 32, "distinct_bytes": 21, "zero_bytes": 4, "chi_square": 480, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/y4m-bad-frame.bin", "origin": "gen", "what": "a line that is no frame", "sha256": "b920517a62671a64dca527884453270d6b8ea3b9ba38a60e8ad36c56e67da9db", "result": { "format": "wai.identify/1", "size": 32, "verdict": "signature_only", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "signature", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 22, "stopped": { "at": 22, "why": "invalid" }, "facts": { "width": 2, "height": 2, "colour": "mono", "frames_read": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 32, "distinct_bytes": 23, "zero_bytes": 0, "chi_square": 400, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/y4m-frame-nl.bin", "origin": "gen", "what": "a frame line with no end", "sha256": "127d144e4ba22df92020ccb0b1c9604c15e0c89b35891b25007c445bd8cbf5ec", "result": { "format": "wai.identify/1", "size": 27, "verdict": "signature_only", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "signature", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 22, "stopped": { "at": 22, "why": "invalid" }, "facts": { "width": 2, "height": 2, "colour": "mono", "frames_read": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 27, "distinct_bytes": 20, "zero_bytes": 0, "chi_square": 399, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/flv-enhanced.bin", "origin": "gen", "what": "the enhanced form of video, and mp3", "sha256": "189acb16423ff114bd609327a734b614f90f3f49b746fbdfd31bf11f8bbbe737", "result": { "format": "wai.identify/1", "size": 70, "verdict": "identified", "candidates": [ { "id": "flv", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": 70, "stopped": null, "facts": { "tags_read": 3 }, "tracks": [ { "track": null, "media": "video", "stated": "av01", "codec": "av1", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": null, "media": "audio", "stated": "sound_format:2", "codec": "mp3", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.av1" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 70, "distinct_bytes": 24, "zero_bytes": 45, "chi_square": 7441, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/flv-unknown.bin", "origin": "gen", "what": "codecs with no name here", "sha256": "c68ab52e77f069fc29718fadc5d5e062d56880d0784abac9566e78fd17c5626e", "result": { "format": "wai.identify/1", "size": 49, "verdict": "identified", "candidates": [ { "id": "flv", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": 49, "stopped": null, "facts": { "tags_read": 2 }, "tracks": [ { "track": null, "media": "video", "stated": "zzzz", "codec": null, "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": null, "media": "audio", "stated": "sound_format:11", "codec": null, "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 49, "distinct_bytes": 13, "zero_bytes": 31, "chi_square": 5159, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/flv-plain.bin", "origin": "gen", "what": "a video codec number with no name", "sha256": "768be689391c0b59677e217f1e87224c1157fc44116d04d147176f32c73190fe", "result": { "format": "wai.identify/1", "size": 30, "verdict": "identified", "candidates": [ { "id": "flv", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": 30, "stopped": null, "facts": { "tags_read": 1 }, "tracks": [ { "track": null, "media": "video", "stated": "codec_id:2", "codec": null, "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 30, "distinct_bytes": 10, "zero_bytes": 20, "chi_square": 3485, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/flv-empty-tags.bin", "origin": "gen", "what": "tags with no body", "sha256": "238098e45c920147bd05060cfd175c1a1343706b278557d49b8c17e23f1b3b65", "result": { "format": "wai.identify/1", "size": 43, "verdict": "identified", "candidates": [ { "id": "flv", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": 43, "stopped": null, "facts": { "tags_read": 2 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 43, "distinct_bytes": 9, "zero_bytes": 33, "chi_square": 6523, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/flv-bad-type.bin", "origin": "gen", "what": "a tag of no type", "sha256": "852cbacf998e7ba48f6b7dfaad0f06f255e4013db429c5e37af27a885c5f31f7", "result": { "format": "wai.identify/1", "size": 29, "verdict": "signature_only", "candidates": [ { "id": "flv", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": 13, "stopped": { "at": 13, "why": "invalid" }, "facts": { "tags_read": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 29, "distinct_bytes": 8, "zero_bytes": 7, "chi_square": 2716, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/flv-bad-prev.bin", "origin": "gen", "what": "a closing size that disagrees", "sha256": "238bf93e89d67f63222e52b440607732ec59589e546d9ffa969335feede39275", "result": { "format": "wai.identify/1", "size": 29, "verdict": "signature_only", "candidates": [ { "id": "flv", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": 13, "stopped": { "at": 13, "why": "invalid" }, "facts": { "tags_read": 0 }, "tracks": [ { "track": null, "media": "audio", "stated": "sound_format:10", "codec": "aac", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.audio.aac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 29, "distinct_bytes": 9, "zero_bytes": 19, "chi_square": 3299, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/flv-low-offset.bin", "origin": "gen", "what": "a data offset too small", "sha256": "e390b489c9de3e2360667f52a62fd8062a4bd6cb1df7d6c5a3371a41ed203f65", "result": { "format": "wai.identify/1", "size": 13, "verdict": "signature_only", "candidates": [ { "id": "flv", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": 0, "stopped": { "at": 0, "why": "invalid" }, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 13, "distinct_bytes": 7, "zero_bytes": 7, "chi_square": 1070, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/flv-short.bin", "origin": "gen", "what": "too short for its offset", "sha256": "4886cb8862641870126703c2d5bb8f882167b52578361ceba5c557ad5ca6d7b3", "result": { "format": "wai.identify/1", "size": 5, "verdict": "signature_only", "candidates": [ { "id": "flv", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": 0, "stopped": { "at": 0, "why": "overrun" }, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 5, "distinct_bytes": 5, "zero_bytes": 0, "chi_square": 251, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/flv-no-prev.bin", "origin": "gen", "what": "a tag with no closing size", "sha256": "a1dd006675213dad5abea6719006b4c89da8fe8c7f55b919af3d11e53685683f", "result": { "format": "wai.identify/1", "size": 25, "verdict": "signature_only", "candidates": [ { "id": "flv", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": 13, "stopped": { "at": 13, "why": "overrun" }, "facts": { "tags_read": 0 }, "tracks": [ { "track": null, "media": "audio", "stated": "sound_format:10", "codec": "aac", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.audio.aac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 25, "distinct_bytes": 9, "zero_bytes": 16, "chi_square": 2709, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/av1-full.bin", "origin": "gen", "what": "every optional part of a sequence header", "sha256": "3b45ec2fae7e00edfdc2534fb20872f1569a67c2d36b4599a9ed800887c9375f", "result": { "format": "wai.identify/1", "size": 37, "verdict": "identified", "candidates": [ { "id": "av1-obu", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 2, "len": 30, "is": "sequence_header" } ], "walked_to": 37, "stopped": null, "facts": { "profile": 1, "level": 9, "width": 100, "height": 50, "units_read": 3 }, "tracks": [], "capabilities": [ "wai.video.av1" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 37, "distinct_bytes": 22, "zero_bytes": 11, "chi_square": 1049, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/av1-reduced.bin", "origin": "gen", "what": "a reduced still picture's header", "sha256": "6a032848d057ce84a12051b79902871155bbeeb0ec26b8b9998cfc91c340de24", "result": { "format": "wai.identify/1", "size": 10, "verdict": "identified", "candidates": [ { "id": "av1-obu", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 0, "len": 7, "is": "sequence_header" } ], "walked_to": 10, "stopped": null, "facts": { "profile": 0, "level": 4, "width": 256, "height": 128, "units_read": 2 }, "tracks": [], "capabilities": [ "wai.video.av1" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 10, "distinct_bytes": 9, "zero_bytes": 0, "chi_square": 297, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/av1-ext.bin", "origin": "gen", "what": "an extension byte", "sha256": "0998d68b821137cf77d7aeb429519a35b1aee29eb143565af7ba4e7f4e3603fb", "result": { "format": "wai.identify/1", "size": 12, "verdict": "identified", "candidates": [ { "id": "av1-obu", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 2, "len": 8, "is": "sequence_header" } ], "walked_to": 12, "stopped": null, "facts": { "profile": 0, "level": 4, "width": 256, "height": 128, "units_read": 3 }, "tracks": [], "capabilities": [ "wai.video.av1" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 12, "distinct_bytes": 11, "zero_bytes": 2, "chi_square": 286, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/av1-no-seq.bin", "origin": "gen", "what": "no sequence header: no candidate", "sha256": "3c6f549108815f51c7574524d7a9b34921db83879454c386ca28dae21c4f3e4d", "result": { "format": "wai.identify/1", "size": 5, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 5, "distinct_bytes": 4, "zero_bytes": 1, "chi_square": 353, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/av1-only-seq.bin", "origin": "gen", "what": "one OBU: no candidate", "sha256": "cf1b572bea0055149be55bcbba31036857e15a3644efd81d9d7ffb7864b1a8b8", "result": { "format": "wai.identify/1", "size": 7, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 7, "distinct_bytes": 7, "zero_bytes": 0, "chi_square": 249, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/av1-bad-seq.bin", "origin": "gen", "what": "a sequence header that does not read: no candidate", "sha256": "a21bd42c7163f3b5e804d485cd97eab29d6386c72d63c903adc1224d07b6a166", "result": { "format": "wai.identify/1", "size": 6, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 6, "distinct_bytes": 4, "zero_bytes": 1, "chi_square": 506, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/av1-reserved.bin", "origin": "gen", "what": "a reserved type stops the walk", "sha256": "ae878b3194ce8d93f069190743d9fc31c3db195f465cef94bdd3f6524db56eb9", "result": { "format": "wai.identify/1", "size": 12, "verdict": "identified", "candidates": [ { "id": "av1-obu", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 0, "len": 7, "is": "sequence_header" } ], "walked_to": 10, "stopped": { "at": 10, "why": "invalid" }, "facts": { "profile": 0, "level": 4, "width": 256, "height": 128, "units_read": 2 }, "tracks": [], "capabilities": [ "wai.video.av1" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 12, "distinct_bytes": 11, "zero_bytes": 1, "chi_square": 286, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/av1-past.bin", "origin": "gen", "what": "an OBU past the file", "sha256": "4a9d879df221af10ecd38c1abefbad7c0165a5da8dbb4b1644a49169916b5e56", "result": { "format": "wai.identify/1", "size": 13, "verdict": "identified", "candidates": [ { "id": "av1-obu", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 0, "len": 7, "is": "sequence_header" } ], "walked_to": 10, "stopped": { "at": 10, "why": "overrun" }, "facts": { "profile": 0, "level": 4, "width": 256, "height": 128, "units_read": 2 }, "tracks": [], "capabilities": [ "wai.video.av1" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 13, "distinct_bytes": 11, "zero_bytes": 1, "chi_square": 321, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/av1-long-size.bin", "origin": "gen", "what": "a size too long to be one", "sha256": "c56d969d4aaeae5c0e07d0f4fb58c4b29a5f04ebf41f1bd13123dd551b74ae30", "result": { "format": "wai.identify/1", "size": 20, "verdict": "identified", "candidates": [ { "id": "av1-obu", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 0, "len": 7, "is": "sequence_header" } ], "walked_to": 10, "stopped": { "at": 10, "why": "invalid" }, "facts": { "profile": 0, "level": 4, "width": 256, "height": 128, "units_read": 2 }, "tracks": [], "capabilities": [ "wai.video.av1" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 20, "distinct_bytes": 10, "zero_bytes": 0, "chi_square": 1055, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/hls-multivariant.bin", "origin": "gen", "what": "a multivariant playlist, with a key", "sha256": "2265c8206c688af759b5f28b4a509ef10c7f1a47cc475a8c4eda61c1008b34fc", "result": { "format": "wai.identify/1", "size": 213, "verdict": "identified", "candidates": [ { "id": "hls", "kind": "playlist", "strength": "structure", "evidence": [ { "at": 3, "len": 7, "is": "extm3u" } ], "walked_to": null, "stopped": null, "facts": { "playlist": "multivariant", "variants": 2, "segments": 0, "maps": 0, "ended": false, "version": 7, "key_method": "SAMPLE-AES", "codecs": "hvc1.1.6.L93.B0,mp4a.40.2" }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 213, "distinct_bytes": 52, "zero_bytes": 0, "chi_square": 1699, "windows": 0, "uniform_windows": 0, "text": true, "periods": [ { "lag": 39, "z": 11 } ] } } }, { "file": "gen/hls-media.bin", "origin": "gen", "what": "a media playlist, with a map, a key and a version that is none", "sha256": "cbd32b27538512c063ca68dcb0d51e593e951a357070a63747841b60afb5219b", "result": { "format": "wai.identify/1", "size": 98, "verdict": "identified", "candidates": [ { "id": "hls", "kind": "playlist", "strength": "structure", "evidence": [ { "at": 0, "len": 7, "is": "extm3u" } ], "walked_to": null, "stopped": null, "facts": { "playlist": "media", "variants": 0, "segments": 1, "maps": 1, "ended": true, "version": null, "key_method": "AES-128", "codecs": null }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 98, "distinct_bytes": 33, "zero_bytes": 0, "chi_square": 1354, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/hls-bare.bin", "origin": "gen", "what": "no tag of its own: signature", "sha256": "e506c4364aa1daf58daeca917245fc103d733198ac745ba1b30c681a0f42860e", "result": { "format": "wai.identify/1", "size": 21, "verdict": "signature_only", "candidates": [ { "id": "hls", "kind": "playlist", "strength": "signature", "evidence": [ { "at": 0, "len": 7, "is": "extm3u" } ], "walked_to": null, "stopped": null, "facts": { "playlist": "media", "variants": 0, "segments": 1, "maps": 0, "ended": false, "version": null, "key_method": null, "codecs": null }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 21, "distinct_bytes": 15, "zero_bytes": 0, "chi_square": 405, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/hls-only.bin", "origin": "gen", "what": "the first line alone, with no line end", "sha256": "00691126fdad8bc78e8720731ae14addc22e3517d920000fd9979395c86c7bdb", "result": { "format": "wai.identify/1", "size": 7, "verdict": "signature_only", "candidates": [ { "id": "hls", "kind": "playlist", "strength": "signature", "evidence": [ { "at": 0, "len": 7, "is": "extm3u" } ], "walked_to": null, "stopped": null, "facts": { "playlist": "other", "variants": 0, "segments": 0, "maps": 0, "ended": false, "version": null, "key_method": null, "codecs": null }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 7, "distinct_bytes": 7, "zero_bytes": 0, "chi_square": 249, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/hls-not.bin", "origin": "gen", "what": "another first line: no candidate", "sha256": "a794341988ddbaf736b548a474b251dac3158cbf0047288373d82c5ad948f6fc", "result": { "format": "wai.identify/1", "size": 26, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 26, "distinct_bytes": 17, "zero_bytes": 0, "chi_square": 486, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/dash-live.bin", "origin": "gen", "what": "live, protected, two codecs", "sha256": "be458419ef3fefce9053a693aafbad7e282307811ebec3a0cd87c68223198384", "result": { "format": "wai.identify/1", "size": 284, "verdict": "identified", "candidates": [ { "id": "dash", "kind": "playlist", "strength": "structure", "evidence": [ { "at": 45, "len": 4, "is": "mpd" }, { "at": 57, "len": 29, "is": "namespace" } ], "walked_to": null, "stopped": null, "facts": { "type": "dynamic", "periods": 1, "adaptation_sets": 1, "representations": 2, "content_protection": 1, "codecs": [ "av01.0.04M.08", "opus" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 284, "distinct_bytes": 47, "zero_bytes": 0, "chi_square": 2344, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/dash-bare.bin", "origin": "gen", "what": "no namespace: signature, and no type from another tag", "sha256": "f274266e1f063e0cc68282eaba230aed13e6f5cd20e4a25e8d037eee81026d39", "result": { "format": "wai.identify/1", "size": 29, "verdict": "signature_only", "candidates": [ { "id": "dash", "kind": "playlist", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "mpd" } ], "walked_to": null, "stopped": null, "facts": { "type": null, "periods": 1, "adaptation_sets": 0, "representations": 0, "content_protection": 0, "codecs": [] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 29, "distinct_bytes": 18, "zero_bytes": 0, "chi_square": 474, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/dash-not.bin", "origin": "gen", "what": "another element: no candidate", "sha256": "14775c9cb03380cece25b4004f76eee37665e318f6a4a5f5bea15c9a8e4705bd", "result": { "format": "wai.identify/1", "size": 7, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 7, "distinct_bytes": 7, "zero_bytes": 0, "chi_square": 249, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/dash-unended.bin", "origin": "gen", "what": "a declaration with no end: no candidate", "sha256": "9c9ae96b99ef770720895cc80ffed705f1684739bc92d2d94902ad62f206bf9c", "result": { "format": "wai.identify/1", "size": 16, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 16, "distinct_bytes": 12, "zero_bytes": 0, "chi_square": 400, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/iso-no-rows.bin", "origin": "gen", "what": "tracks lacking what a row needs: none", "sha256": "90bbe7ab57ebd70b7301d511c00a2e56115dcb9f412b7600a3c272b74dd826de", "result": { "format": "wai.identify/1", "size": 448, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 20, "len": 4, "is": "box:moov" } ], "walked_to": 448, "stopped": null, "facts": { "major_brand": "isom", "compatible_brands": [], "boxes": [ "ftyp", "moov" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 448, "distinct_bytes": 37, "zero_bytes": 247, "chi_square": 35721, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/iso-inner-sizes.bin", "origin": "gen", "what": "a track in a box of 64-bit size, and one running to its parent's end", "sha256": "5de56cbb5ad3bb229198d7f641a7b1708cbff5f6849689250567e25213f0183a", "result": { "format": "wai.identify/1", "size": 436, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 20, "len": 4, "is": "box:moov" } ], "walked_to": 436, "stopped": null, "facts": { "major_brand": "isom", "compatible_brands": [], "boxes": [ "ftyp", "moov" ] }, "tracks": [ { "track": 9, "media": "video", "stated": "hvc1", "codec": "hevc", "width": 640, "height": 360, "channels": null, "sample_rate": null, "protected": null }, { "track": 7, "media": "video", "stated": "av01", "codec": "av1", "width": 640, "height": 360, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.av1", "wai.video.hevc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 436, "distinct_bytes": 36, "zero_bytes": 322, "chi_square": 60786, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/iso-bad-child-large.bin", "origin": "gen", "what": "a child of a 64-bit size below its header ends the children", "sha256": "2c705f60365a544da6a1402e8c50628de5d4ccae2b647cac326c24aec832dc39", "result": { "format": "wai.identify/1", "size": 238, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 20, "len": 4, "is": "box:moov" } ], "walked_to": 238, "stopped": null, "facts": { "major_brand": "isom", "compatible_brands": [], "boxes": [ "ftyp", "moov" ] }, "tracks": [ { "track": 7, "media": "video", "stated": "zzzz", "codec": null, "width": 640, "height": 360, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 238, "distinct_bytes": 31, "zero_bytes": 169, "chi_square": 30718, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/iso-bad-child-tiny.bin", "origin": "gen", "what": "a child of a size below a header ends the children", "sha256": "d30b276fde5f5cec2a28e5b96830033423daf187e654e78f6421f92477643ec2", "result": { "format": "wai.identify/1", "size": 152, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 20, "len": 4, "is": "box:moov" } ], "walked_to": 152, "stopped": null, "facts": { "major_brand": "isom", "compatible_brands": [], "boxes": [ "ftyp", "moov" ] }, "tracks": [ { "track": 7, "media": "text", "stated": "wvtt", "codec": "webvtt", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 152, "distinct_bytes": 30, "zero_bytes": 88, "chi_square": 13240, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/iso-bad-child-past.bin", "origin": "gen", "what": "a child past its parent ends the children", "sha256": "fc134a4743fd01285cf744545dee727f5057dc67e862f5539910d7a08e7deb16", "result": { "format": "wai.identify/1", "size": 152, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 20, "len": 4, "is": "box:moov" } ], "walked_to": 152, "stopped": null, "facts": { "major_brand": "isom", "compatible_brands": [], "boxes": [ "ftyp", "moov" ] }, "tracks": [ { "track": 7, "media": "text", "stated": "tx3g", "codec": null, "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 152, "distinct_bytes": 31, "zero_bytes": 88, "chi_square": 13261, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/iso-bad-esds.bin", "origin": "gen", "what": "esds that does not read: no codec named", "sha256": "5176240bbead15739f8bac10a7d78d8b0ee1df13663d12ebf2b447e97cb43897", "result": { "format": "wai.identify/1", "size": 825, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 20, "len": 4, "is": "box:moov" } ], "walked_to": 825, "stopped": null, "facts": { "major_brand": "isom", "compatible_brands": [], "boxes": [ "ftyp", "moov" ] }, "tracks": [ { "track": 7, "media": "audio", "stated": "mp4a", "codec": null, "width": null, "height": null, "channels": 2, "sample_rate": 48000, "protected": null }, { "track": 7, "media": "audio", "stated": "mp4a", "codec": null, "width": null, "height": null, "channels": 2, "sample_rate": 48000, "protected": null }, { "track": 7, "media": "audio", "stated": "mp4a", "codec": null, "width": null, "height": null, "channels": 2, "sample_rate": 48000, "protected": null }, { "track": 7, "media": "audio", "stated": "mp4a", "codec": null, "width": null, "height": null, "channels": 2, "sample_rate": 48000, "protected": null }, { "track": 7, "media": "audio", "stated": "mp4a", "codec": null, "width": null, "height": null, "channels": 2, "sample_rate": 48000, "protected": null } ], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 825, "distinct_bytes": 61, "zero_bytes": 534, "chi_square": 88777, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/iso-short-entries.bin", "origin": "gen", "what": "a sample entry of the older form, too short ones, a short frma and schm", "sha256": "454110ff41ebe8784b58b9442251e747d376073a0dd04a5e5273ec95a4206f4d", "result": { "format": "wai.identify/1", "size": 604, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 20, "len": 4, "is": "box:moov" } ], "walked_to": 604, "stopped": null, "facts": { "major_brand": "isom", "compatible_brands": [], "boxes": [ "ftyp", "moov" ] }, "tracks": [ { "track": 7, "media": "audio", "stated": "mp4a", "codec": null, "width": null, "height": null, "channels": 1, "sample_rate": 8000, "protected": null }, { "track": 7, "media": "audio", "stated": "enca", "codec": null, "width": null, "height": null, "channels": 2, "sample_rate": 48000, "protected": { "scheme": null, "original": null } }, { "track": 7, "media": "audio", "stated": "Opus", "codec": "opus", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 7, "media": "video", "stated": "vp09", "codec": "vp9", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.audio.opus", "wai.video.vp9" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 604, "distinct_bytes": 51, "zero_bytes": 379, "chi_square": 61204, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/iso-trailing.bin", "origin": "gen", "what": "fewer bytes than a header after the last box", "sha256": "5ea5d7e9bc136b9cde886517b7fd9750a38e7e43ec669bf412c5ad20adb3c9a0", "result": { "format": "wai.identify/1", "size": 19, "verdict": "signature_only", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "signature", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" } ], "walked_to": 16, "stopped": { "at": 16, "why": "overrun" }, "facts": { "major_brand": "isom", "compatible_brands": [], "boxes": [ "ftyp" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 19, "distinct_bytes": 10, "zero_bytes": 10, "chi_square": 1449, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/iso-copyright.bin", "origin": "gen", "what": "a box type with 0xA9", "sha256": "4cd2b89136a460d641025214bdc0baf1c0b7b1c397d3e7439a97f43393136492", "result": { "format": "wai.identify/1", "size": 24, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 20, "len": 4, "is": "box:\\xa9too" } ], "walked_to": 24, "stopped": null, "facts": { "major_brand": "isom", "compatible_brands": [], "boxes": [ "ftyp", "\\xa9too" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 24, "distinct_bytes": 12, "zero_bytes": 10, "chi_square": 1277, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mkv-many.bin", "origin": "gen", "what": "more children than a walk reads: limit", "sha256": "09ff0a1724689223bb45ca12256e158ebb7ffd2cef3c9d7d611571ba72c0a8f3", "result": { "format": "wai.identify/1", "size": 8226, "verdict": "identified", "candidates": [ { "id": "matroska", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "ebml" }, { "at": 20, "len": 4, "is": "segment" } ], "walked_to": 8224, "stopped": { "at": 8224, "why": "limit" }, "facts": { "doc_type": "matroska", "doc_type_version": 4 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 8226, "distinct_bytes": 25, "zero_bytes": 0, "chi_square": 1036783, "windows": 2, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mkv-odd.bin", "origin": "gen", "what": "values of no allowed length, floats with no rate, encoding with no encryption, a child with a zero first size byte", "sha256": "560e2a5eeb7bd6ee4791d224eca39bd30a7aedcaea5278824c74ba468291bb04", "result": { "format": "wai.identify/1", "size": 161, "verdict": "identified", "candidates": [ { "id": "matroska", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "ebml" }, { "at": 20, "len": 4, "is": "segment" }, { "at": 32, "len": 4, "is": "tracks" } ], "walked_to": 129, "stopped": { "at": 129, "why": "invalid" }, "facts": { "doc_type": "matroska", "doc_type_version": 4 }, "tracks": [ { "track": null, "media": "other", "stated": "", "codec": null, "width": 256, "height": 200, "channels": null, "sample_rate": null, "protected": null }, { "track": null, "media": "other", "stated": "", "codec": null, "width": null, "height": null, "channels": null, "sample_rate": 0, "protected": null }, { "track": null, "media": "other", "stated": "", "codec": null, "width": null, "height": null, "channels": null, "sample_rate": 0, "protected": null }, { "track": null, "media": "other", "stated": "", "codec": null, "width": null, "height": null, "channels": null, "sample_rate": 18446744073709551615, "protected": null } ], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 161, "distinct_bytes": 61, "zero_bytes": 53, "chi_square": 4772, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mkv-long-id.bin", "origin": "gen", "what": "an identifier longer than four bytes", "sha256": "142446d9003f867e3f334c465be6ee54e462e54261d444be49dda5e1f4d957b9", "result": { "format": "wai.identify/1", "size": 46, "verdict": "signature_only", "candidates": [ { "id": "matroska", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "ebml" }, { "at": 20, "len": 4, "is": "segment" } ], "walked_to": 32, "stopped": { "at": 32, "why": "invalid" }, "facts": { "doc_type": "matroska", "doc_type_version": 4 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 46, "distinct_bytes": 29, "zero_bytes": 8, "chi_square": 799, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mkv-trunc-id.bin", "origin": "gen", "what": "an identifier the file ends in", "sha256": "d253edd87a7ba7f464a6a110e15ef1244bbad7d3c92eb74c3e21e071c5f360b8", "result": { "format": "wai.identify/1", "size": 33, "verdict": "signature_only", "candidates": [ { "id": "matroska", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "ebml" }, { "at": 20, "len": 4, "is": "segment" } ], "walked_to": 32, "stopped": { "at": 32, "why": "overrun" }, "facts": { "doc_type": "matroska", "doc_type_version": 4 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 33, "distinct_bytes": 25, "zero_bytes": 0, "chi_square": 579, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mkv-inner.bin", "origin": "gen", "what": "inside Tracks, an entry of unknown size and one past its parent", "sha256": "dce7e4a8f2e1b35d0819c727753529154bc9adb08b41ed0bbfea4ec49bec177b", "result": { "format": "wai.identify/1", "size": 45, "verdict": "identified", "candidates": [ { "id": "matroska", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "ebml" }, { "at": 20, "len": 4, "is": "segment" }, { "at": 32, "len": 4, "is": "tracks" } ], "walked_to": 45, "stopped": null, "facts": { "doc_type": "matroska", "doc_type_version": 4 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 45, "distinct_bytes": 29, "zero_bytes": 0, "chi_square": 643, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mkv-short-doc.bin", "origin": "gen", "what": "a child past the file, not read", "sha256": "933c4ef9d8e365d93ca139458214ddbbc090f399843e5f240676cb0685fd5f77", "result": { "format": "wai.identify/1", "size": 48, "verdict": "signature_only", "candidates": [ { "id": "matroska", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "ebml" }, { "at": 20, "len": 4, "is": "segment" } ], "walked_to": 32, "stopped": { "at": 32, "why": "overrun" }, "facts": { "doc_type": "matroska", "doc_type_version": 4 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 48, "distinct_bytes": 30, "zero_bytes": 10, "chi_square": 944, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ogg-cut-table.bin", "origin": "gen", "what": "a page cut in its table", "sha256": "5bbcd23003db4f67de3511efa1bd7f5e4eaf0b70ed43de10b0173f69999f7d55", "result": { "format": "wai.identify/1", "size": 28, "verdict": "signature_only", "candidates": [ { "id": "ogg", "kind": "container", "strength": "signature", "evidence": [], "walked_to": 0, "stopped": { "at": 0, "why": "overrun" }, "facts": { "pages_read": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 28, "distinct_bytes": 7, "zero_bytes": 20, "chi_square": 3738, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ogg-cut-body.bin", "origin": "gen", "what": "a page cut in its body", "sha256": "d4533beed363f029cb1f97c03dabc830c92870997e09237e5114ccc8b9508fc3", "result": { "format": "wai.identify/1", "size": 30, "verdict": "signature_only", "candidates": [ { "id": "ogg", "kind": "container", "strength": "signature", "evidence": [], "walked_to": 0, "stopped": { "at": 0, "why": "overrun" }, "facts": { "pages_read": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 30, "distinct_bytes": 9, "zero_bytes": 20, "chi_square": 3502, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/flac-other-first.bin", "origin": "gen", "what": "a first block of another type", "sha256": "a8055d21b18c1ef2b26130a423d2cf4378ca13f8e0eaca4f4f5ecbf53fef4694", "result": { "format": "wai.identify/1", "size": 42, "verdict": "signature_only", "candidates": [ { "id": "flac", "kind": "audio", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "fLaC" } ], "walked_to": 4, "stopped": { "at": 4, "why": "invalid" }, "facts": {}, "tracks": [], "capabilities": [ "wai.audio.flac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 42, "distinct_bytes": 7, "zero_bytes": 36, "chi_square": 7894, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/flac-short-first.bin", "origin": "gen", "what": "a first block of another length", "sha256": "02993cd1794cdb2b039a24c740e7f2f4362ba513bb0b869fcc4d7b493d8226a2", "result": { "format": "wai.identify/1", "size": 41, "verdict": "signature_only", "candidates": [ { "id": "flac", "kind": "audio", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "fLaC" } ], "walked_to": 4, "stopped": { "at": 4, "why": "invalid" }, "facts": {}, "tracks": [], "capabilities": [ "wai.audio.flac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 41, "distinct_bytes": 7, "zero_bytes": 35, "chi_square": 7645, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/flac-past.bin", "origin": "gen", "what": "a block past the file", "sha256": "517c1eb093aab5efabac9895bb461984e51b190eb40dbdba92930b96ce1c0097", "result": { "format": "wai.identify/1", "size": 46, "verdict": "signature_only", "candidates": [ { "id": "flac", "kind": "audio", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "fLaC" }, { "at": 8, "len": 34, "is": "streaminfo" } ], "walked_to": 42, "stopped": { "at": 42, "why": "overrun" }, "facts": { "sample_rate": 48000, "channels": 2, "bits_per_sample": 32, "samples": 1 }, "tracks": [], "capabilities": [ "wai.audio.flac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 46, "distinct_bytes": 12, "zero_bytes": 32, "chi_square": 5775, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/flac-many.bin", "origin": "gen", "what": "more blocks than a walk reads: limit", "sha256": "fa2a3e2261059bd9fc32232a82a2c470c50195322115918a47bedbbf4ac44b9c", "result": { "format": "wai.identify/1", "size": 16426, "verdict": "signature_only", "candidates": [ { "id": "flac", "kind": "audio", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "fLaC" }, { "at": 8, "len": 34, "is": "streaminfo" } ], "walked_to": 16422, "stopped": { "at": 16422, "why": "limit" }, "facts": { "sample_rate": 48000, "channels": 2, "bits_per_sample": 32, "samples": 1 }, "tracks": [], "capabilities": [ "wai.audio.flac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 16426, "distinct_bytes": 11, "zero_bytes": 12320, "chi_square": 2610711, "windows": 4, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/flac-just-meta.bin", "origin": "gen", "what": "no bytes after the last block", "sha256": "f53d853fc68ab32dc36c3184c3358bcf04a66128f8fbcafd5400db4cfa781023", "result": { "format": "wai.identify/1", "size": 42, "verdict": "signature_only", "candidates": [ { "id": "flac", "kind": "audio", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "fLaC" }, { "at": 8, "len": 34, "is": "streaminfo" } ], "walked_to": 42, "stopped": { "at": 42, "why": "overrun" }, "facts": { "sample_rate": 48000, "channels": 2, "bits_per_sample": 32, "samples": 1 }, "tracks": [], "capabilities": [ "wai.audio.flac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 42, "distinct_bytes": 12, "zero_bytes": 31, "chi_square": 5882, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/flac-half-sync.bin", "origin": "gen", "what": "one byte after the last block", "sha256": "1e9ef83e8491071f2588f952cf2605fdc0f237e1ec3deb8ae5389dbe7795f37c", "result": { "format": "wai.identify/1", "size": 43, "verdict": "signature_only", "candidates": [ { "id": "flac", "kind": "audio", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "fLaC" }, { "at": 8, "len": 34, "is": "streaminfo" } ], "walked_to": 42, "stopped": { "at": 42, "why": "invalid" }, "facts": { "sample_rate": 48000, "channels": 2, "bits_per_sample": 32, "samples": 1 }, "tracks": [], "capabilities": [ "wai.audio.flac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 43, "distinct_bytes": 13, "zero_bytes": 31, "chi_square": 5749, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/riff-many.bin", "origin": "gen", "what": "more chunks than a walk reads: limit", "sha256": "0215df660c3c66275016d7418e2cef75c3f6a22048e3d7cf120859a608c7e8de", "result": { "format": "wai.identify/1", "size": 32788, "verdict": "identified", "candidates": [ { "id": "avi", "kind": "container", "strength": "structure", "evidence": [ { "at": 8, "len": 4, "is": "form:AVI " }, { "at": 12, "len": 4, "is": "chunk:JUNK" }, { "at": 20, "len": 4, "is": "chunk:JUNK" }, { "at": 28, "len": 4, "is": "chunk:JUNK" }, { "at": 36, "len": 4, "is": "chunk:JUNK" }, { "at": 44, "len": 4, "is": "chunk:JUNK" }, { "at": 52, "len": 4, "is": "chunk:JUNK" }, { "at": 60, "len": 4, "is": "chunk:JUNK" } ], "walked_to": 32780, "stopped": { "at": 32780, "why": "limit" }, "facts": { "form": "AVI ", "chunks": [ "JUNK" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 32788, "distinct_bytes": 13, "zero_bytes": 16390, "chi_square": 2588844, "windows": 8, "uniform_windows": 0, "text": false, "periods": [ { "lag": 8, "z": 222 } ] } } }, { "file": "gen/riff-webp-vp8.bin", "origin": "gen", "what": "a lossy frame with no size, and one with no start code", "sha256": "9e1981913d59b88de549cddd8c8ba03e79d776b859c704a6fc1336ca7fd81d52", "result": { "format": "wai.identify/1", "size": 44, "verdict": "identified", "candidates": [ { "id": "webp", "kind": "image", "strength": "structure", "evidence": [ { "at": 8, "len": 4, "is": "form:WEBP" }, { "at": 12, "len": 4, "is": "chunk:VP8 " }, { "at": 26, "len": 4, "is": "chunk:VP8 " } ], "walked_to": 44, "stopped": null, "facts": { "form": "WEBP", "coding": "lossy", "width": 4182, "height": 8248, "chunks": [ "VP8 " ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 44, "distinct_bytes": 17, "zero_bytes": 22, "chi_square": 2981, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/riff-wave-short.bin", "origin": "gen", "what": "a wave header too short to state its fields", "sha256": "dd1a7560457fd315662cec09a914398b8da0ef2330c56148f25b1a9efb328b60", "result": { "format": "wai.identify/1", "size": 24, "verdict": "identified", "candidates": [ { "id": "wave", "kind": "audio", "strength": "structure", "evidence": [ { "at": 8, "len": 4, "is": "form:WAVE" }, { "at": 12, "len": 4, "is": "chunk:fmt " } ], "walked_to": 24, "stopped": null, "facts": { "form": "WAVE", "format_tag": 1, "channels": null, "sample_rate": null, "bits_per_sample": null, "chunks": [ "fmt " ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 24, "distinct_bytes": 16, "zero_bytes": 8, "chi_square": 850, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mp3-layer1.bin", "origin": "gen", "what": "version 1 layer I at 32 kbit/s and 44.1 kHz", "sha256": "7f7b496f2ddbdf94dae5b7c69a31995d31bf0d5da68e396b287ae0e079648860", "result": { "format": "wai.identify/1", "size": 96, "verdict": "identified", "candidates": [ { "id": "mpeg-audio", "kind": "audio", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "frame_header" } ], "walked_to": 96, "stopped": null, "facts": { "version": "1", "layer": 1, "bitrate_kbps": 32, "sample_rate": 44100, "channels": 2, "frames_read": 3 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 96, "distinct_bytes": 3, "zero_bytes": 87, "chi_square": 20208, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mp3-layer2-v2.bin", "origin": "gen", "what": "version 2 layer II at 8 kbit/s and 24 kHz: 48 bytes, not 72's", "sha256": "cff3dc4acf64078ba307d2b726cdde9add7ca313b6b04bc5c7c01fcfe6d2534e", "result": { "format": "wai.identify/1", "size": 234, "verdict": "signature_only", "candidates": [ { "id": "mpeg-audio", "kind": "audio", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "frame_header" } ], "walked_to": 48, "stopped": { "at": 48, "why": "invalid" }, "facts": { "version": "2", "layer": 2, "bitrate_kbps": 8, "sample_rate": 24000, "channels": 1, "frames_read": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 234, "distinct_bytes": 5, "zero_bytes": 222, "chi_square": 53722, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mp3-layer3-v25.bin", "origin": "gen", "what": "version 2.5 layer III at 8 kbit/s and 8 kHz", "sha256": "4fb48a3ddd45edea024f9420317aebf246b6cabafee279d48a23a3cc6790a8c0", "result": { "format": "wai.identify/1", "size": 216, "verdict": "identified", "candidates": [ { "id": "mpeg-audio", "kind": "audio", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "frame_header" } ], "walked_to": 216, "stopped": null, "facts": { "version": "2.5", "layer": 3, "bitrate_kbps": 8, "sample_rate": 8000, "channels": 2, "frames_read": 3 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 216, "distinct_bytes": 4, "zero_bytes": 207, "chi_square": 50600, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mp3-pad.bin", "origin": "gen", "what": "padding, version 1 layer III at 128 kbit/s and 44.1 kHz", "sha256": "4fb98612c920584b9ee589f38084bf7aadf3234ec3bd7dc28403fba5c9e05280", "result": { "format": "wai.identify/1", "size": 1254, "verdict": "identified", "candidates": [ { "id": "mpeg-audio", "kind": "audio", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "frame_header" } ], "walked_to": 1254, "stopped": null, "facts": { "version": "1", "layer": 3, "bitrate_kbps": 128, "sample_rate": 44100, "channels": 2, "frames_read": 3 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1254, "distinct_bytes": 4, "zero_bytes": 1245, "chi_square": 315184, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mp3-id3v1.bin", "origin": "gen", "what": "a closing ID3v1 tag", "sha256": "b3775aeb0879101678eb237d5d08243cf5736d2dc5983d48c1e501a569550d1e", "result": { "format": "wai.identify/1", "size": 1379, "verdict": "identified", "candidates": [ { "id": "mpeg-audio", "kind": "audio", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "frame_header" }, { "at": 1251, "len": 3, "is": "id3v1" } ], "walked_to": 1379, "stopped": null, "facts": { "version": "1", "layer": 3, "bitrate_kbps": 128, "sample_rate": 44100, "channels": 2, "frames_read": 3 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1379, "distinct_bytes": 7, "zero_bytes": 1367, "chi_square": 345533, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mp3-other-rate.bin", "origin": "gen", "what": "a frame at another rate", "sha256": "e19e446fa56230bd90f6bb65e203ba97271a527d341018d4ae7eb1df2c0445ab", "result": { "format": "wai.identify/1", "size": 801, "verdict": "signature_only", "candidates": [ { "id": "mpeg-audio", "kind": "audio", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "frame_header" } ], "walked_to": 417, "stopped": { "at": 417, "why": "invalid" }, "facts": { "version": "1", "layer": 3, "bitrate_kbps": 128, "sample_rate": 44100, "channels": 2, "frames_read": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 801, "distinct_bytes": 5, "zero_bytes": 795, "chi_square": 201197, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mp3-other-layer.bin", "origin": "gen", "what": "a frame of another layer", "sha256": "ef7f9eaababbf04ce844f9e9446afb4951d3fe0a7a4e857dc14a390f1ce63b3e", "result": { "format": "wai.identify/1", "size": 834, "verdict": "signature_only", "candidates": [ { "id": "mpeg-audio", "kind": "audio", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "frame_header" } ], "walked_to": 417, "stopped": { "at": 417, "why": "invalid" }, "facts": { "version": "1", "layer": 3, "bitrate_kbps": 128, "sample_rate": 44100, "channels": 2, "frames_read": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 834, "distinct_bytes": 5, "zero_bytes": 828, "chi_square": 209612, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mp3-tail.bin", "origin": "gen", "what": "two bytes after a frame", "sha256": "8841a2f4d76afbfe1850034d1935bff4628593f68eab08dfaf2039719b68bed0", "result": { "format": "wai.identify/1", "size": 419, "verdict": "signature_only", "candidates": [ { "id": "mpeg-audio", "kind": "audio", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "frame_header" } ], "walked_to": 417, "stopped": { "at": 417, "why": "overrun" }, "facts": { "version": "1", "layer": 3, "bitrate_kbps": 128, "sample_rate": 44100, "channels": 2, "frames_read": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 419, "distinct_bytes": 4, "zero_bytes": 414, "chi_square": 104305, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mp3-past.bin", "origin": "gen", "what": "a frame past the file", "sha256": "eefda39726e0d7aaa412fec23738bd4c0b3b85091f0278d55d4adb524332ff9e", "result": { "format": "wai.identify/1", "size": 422, "verdict": "signature_only", "candidates": [ { "id": "mpeg-audio", "kind": "audio", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "frame_header" } ], "walked_to": 417, "stopped": { "at": 417, "why": "overrun" }, "facts": { "version": "1", "layer": 3, "bitrate_kbps": 128, "sample_rate": 44100, "channels": 2, "frames_read": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 422, "distinct_bytes": 4, "zero_bytes": 416, "chi_square": 104567, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mp3-bad.bin", "origin": "gen", "what": "version 1 is reserved", "sha256": "68034157167a64014b6893e239dfc7827ae7b1b6e0f92aa9b931ada7cd3036b4", "result": { "format": "wai.identify/1", "size": 8, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 8, "distinct_bytes": 4, "zero_bytes": 5, "chi_square": 888, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mp3-layer0.bin", "origin": "gen", "what": "layer 0 is reserved", "sha256": "c30ad7b56db7272eccaa21e2662b411205a27f99bd50cfe677874be6ff046c53", "result": { "format": "wai.identify/1", "size": 8, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 8, "distinct_bytes": 4, "zero_bytes": 5, "chi_square": 888, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mp3-bitrate.bin", "origin": "gen", "what": "bitrate index 15 is reserved", "sha256": "26ecf70f064d1992a1d810904e2bf8526288c5ff05aac25742d49a15e77b0e71", "result": { "format": "wai.identify/1", "size": 8, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 8, "distinct_bytes": 4, "zero_bytes": 5, "chi_square": 888, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mp3-rate.bin", "origin": "gen", "what": "rate index 3 is reserved", "sha256": "c157b7b587eb02ccde92c40b99298173f5b241d01a104df67485cf6e3bbae13c", "result": { "format": "wai.identify/1", "size": 8, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 8, "distinct_bytes": 4, "zero_bytes": 5, "chi_square": 888, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mp3-many.bin", "origin": "gen", "what": "more frames than a walk reads: limit", "sha256": "1fbf06d0f63ee2a4c742e35e1d5a9304c8501b1a6f5132cdbbb5efecdbd113b2", "result": { "format": "wai.identify/1", "size": 131104, "verdict": "identified", "candidates": [ { "id": "mpeg-audio", "kind": "audio", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "frame_header" } ], "walked_to": 131072, "stopped": { "at": 131072, "why": "limit" }, "facts": { "version": "1", "layer": 1, "bitrate_kbps": 32, "sample_rate": 44100, "channels": 2, "frames_read": 4096 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 131104, "distinct_bytes": 3, "zero_bytes": 118813, "chi_square": 27597392, "windows": 32, "uniform_windows": 0, "text": false, "periods": [ { "lag": 32, "z": 69 } ] } } }, { "file": "gen/id3-short.bin", "origin": "gen", "what": "an ID3v2 header that does not read", "sha256": "0309e27dc5c111c30989f1a9c1b2795739e244e7f66ae10f5e985292a919b58b", "result": { "format": "wai.identify/1", "size": 5, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 5, "distinct_bytes": 5, "zero_bytes": 1, "chi_square": 251, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/id3-version.bin", "origin": "gen", "what": "an ID3v2 version not allowed", "sha256": "c15a0cd5cf101bab5d783f12fe57ff2d0929f6b7875ae577d7005d4b0b297014", "result": { "format": "wai.identify/1", "size": 10, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 10, "distinct_bytes": 5, "zero_bytes": 6, "chi_square": 1014, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/id3-revision.bin", "origin": "gen", "what": "an ID3v2 revision not allowed", "sha256": "734951a3f1969d3135656ee5223372bdf6ae5c72ca7be84da4edb70726913da3", "result": { "format": "wai.identify/1", "size": 10, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 10, "distinct_bytes": 6, "zero_bytes": 5, "chi_square": 758, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/adts-other-rate.bin", "origin": "gen", "what": "a frame at another rate", "sha256": "7dd993c251b46adc84969b5e97a73cde0299f7672342f8d4f127f19abe2be04f", "result": { "format": "wai.identify/1", "size": 18, "verdict": "signature_only", "candidates": [ { "id": "adts", "kind": "audio", "strength": "signature", "evidence": [ { "at": 0, "len": 7, "is": "frame_header" } ], "walked_to": 9, "stopped": { "at": 9, "why": "invalid" }, "facts": { "audio_object_type": 2, "sample_rate": 48000, "channel_configuration": 2, "frames_read": 1 }, "tracks": [], "capabilities": [ "wai.audio.aac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 18, "distinct_bytes": 9, "zero_bytes": 4, "chi_square": 579, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/adts-six.bin", "origin": "gen", "what": "six channels", "sha256": "4c9d92fa9ac5ebba9e376fde69321a7677bbce7341a854b3c2bbebad24c02b69", "result": { "format": "wai.identify/1", "size": 27, "verdict": "identified", "candidates": [ { "id": "adts", "kind": "audio", "strength": "structure", "evidence": [ { "at": 0, "len": 7, "is": "frame_header" } ], "walked_to": 27, "stopped": null, "facts": { "audio_object_type": 2, "sample_rate": 48000, "channel_configuration": 6, "frames_read": 3 }, "tracks": [], "capabilities": [ "wai.audio.aac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 27, "distinct_bytes": 8, "zero_bytes": 6, "chi_square": 911, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/adts-tail.bin", "origin": "gen", "what": "two bytes after a frame", "sha256": "431a803b1c7c305d6be489e4db3f3540541f2173e8aa19b7ac2a5b4cd84efecc", "result": { "format": "wai.identify/1", "size": 11, "verdict": "signature_only", "candidates": [ { "id": "adts", "kind": "audio", "strength": "signature", "evidence": [ { "at": 0, "len": 7, "is": "frame_header" } ], "walked_to": 9, "stopped": { "at": 9, "why": "overrun" }, "facts": { "audio_object_type": 2, "sample_rate": 48000, "channel_configuration": 2, "frames_read": 1 }, "tracks": [], "capabilities": [ "wai.audio.aac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 11, "distinct_bytes": 8, "zero_bytes": 2, "chi_square": 384, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/adts-past.bin", "origin": "gen", "what": "a frame past the file", "sha256": "c928f0a24647d2806885336097e46ca87eaa8f0ea4119594511f3e506ce78ad2", "result": { "format": "wai.identify/1", "size": 17, "verdict": "signature_only", "candidates": [ { "id": "adts", "kind": "audio", "strength": "signature", "evidence": [ { "at": 0, "len": 7, "is": "frame_header" } ], "walked_to": 9, "stopped": { "at": 9, "why": "overrun" }, "facts": { "audio_object_type": 2, "sample_rate": 48000, "channel_configuration": 2, "frames_read": 1 }, "tracks": [], "capabilities": [ "wai.audio.aac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 17, "distinct_bytes": 8, "zero_bytes": 3, "chi_square": 540, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/adts-bad-rate.bin", "origin": "gen", "what": "rate index 15 is not one", "sha256": "dfec303e2b5ea042f052145636c4a06ea5f033588108791606c0e74cfaf71fc5", "result": { "format": "wai.identify/1", "size": 8, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 8, "distinct_bytes": 8, "zero_bytes": 1, "chi_square": 248, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/adts-bad-len.bin", "origin": "gen", "what": "a length below its header", "sha256": "f62398e37d7aac9ec411b2aeb59d4ff34ddffd460756f7d3f0a6a609dd505fc4", "result": { "format": "wai.identify/1", "size": 8, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 8, "distinct_bytes": 7, "zero_bytes": 2, "chi_square": 312, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/adts-many.bin", "origin": "gen", "what": "more frames than a walk reads: limit", "sha256": "bb6dfd23bf03ae6d1d46eb1f18ba58a99a6af841270ce99188e3d2d788ec5939", "result": { "format": "wai.identify/1", "size": 28679, "verdict": "identified", "candidates": [ { "id": "adts", "kind": "audio", "strength": "structure", "evidence": [ { "at": 0, "len": 7, "is": "frame_header" } ], "walked_to": 28672, "stopped": { "at": 28672, "why": "limit" }, "facts": { "audio_object_type": 2, "sample_rate": 48000, "channel_configuration": 2, "frames_read": 4096 }, "tracks": [], "capabilities": [ "wai.audio.aac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 28679, "distinct_bytes": 6, "zero_bytes": 4097, "chi_square": 1319819, "windows": 7, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/png-apng.bin", "origin": "gen", "what": "animation, and a colour tag", "sha256": "dfe485c47685d3ee99b60a9096cc0952075ba280ba599404a0676ac2f2a2864a", "result": { "format": "wai.identify/1", "size": 81, "verdict": "identified", "candidates": [ { "id": "png", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 8, "is": "signature" }, { "at": 8, "len": 25, "is": "ihdr" }, { "at": 69, "len": 12, "is": "iend" } ], "walked_to": 81, "stopped": null, "facts": { "width": 1, "height": 2, "bit_depth": 16, "colour_type": 2, "interlace": 1, "animated": true, "cicp": [ 9, 16, 0, 1 ], "chunks_read": 4 }, "tracks": [], "capabilities": [ "wai.image.png" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 81, "distinct_bytes": 36, "zero_bytes": 30, "chi_square": 3044, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/png-short-cicp.bin", "origin": "gen", "what": "a colour tag the file ends in, and a chunk header cut", "sha256": "a4fd23bf3fdc3aece1c7c92d2b87c8deb869141810628edb4160355d5d055adc", "result": { "format": "wai.identify/1", "size": 48, "verdict": "identified", "candidates": [ { "id": "png", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 8, "is": "signature" }, { "at": 8, "len": 25, "is": "ihdr" } ], "walked_to": 46, "stopped": { "at": 46, "why": "overrun" }, "facts": { "width": 1, "height": 2, "bit_depth": 16, "colour_type": 2, "interlace": 1, "cicp": [ 9, 79, 23, 59 ], "chunks_read": 2 }, "tracks": [], "capabilities": [ "wai.image.png" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 48, "distinct_bytes": 26, "zero_bytes": 16, "chi_square": 1573, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/png-no-ihdr.bin", "origin": "gen", "what": "IDAT first", "sha256": "946744150934afa688226707c1abc33a3b66c77c6aa91e8c4b1b194e4e4dff5c", "result": { "format": "wai.identify/1", "size": 33, "verdict": "signature_only", "candidates": [ { "id": "png", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 8, "is": "signature" } ], "walked_to": 8, "stopped": { "at": 8, "why": "invalid" }, "facts": { "chunks_read": 0 }, "tracks": [], "capabilities": [ "wai.image.png" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 33, "distinct_bytes": 15, "zero_bytes": 16, "chi_square": 2131, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/png-long-ihdr.bin", "origin": "gen", "what": "IHDR of another length", "sha256": "cd3967216b9d84a2cab400abbd1a5457606d1299157d29ea4e1837c06b122a83", "result": { "format": "wai.identify/1", "size": 34, "verdict": "signature_only", "candidates": [ { "id": "png", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 8, "is": "signature" } ], "walked_to": 8, "stopped": { "at": 8, "why": "invalid" }, "facts": { "chunks_read": 0 }, "tracks": [], "capabilities": [ "wai.image.png" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 34, "distinct_bytes": 17, "zero_bytes": 17, "chi_square": 2285, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/png-bad-type.bin", "origin": "gen", "what": "a chunk type not of letters", "sha256": "1df66c69670d8198a6863ae5b12d8c7299d0da9f4c3bff9afa888665faec286b", "result": { "format": "wai.identify/1", "size": 41, "verdict": "identified", "candidates": [ { "id": "png", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 8, "is": "signature" }, { "at": 8, "len": 25, "is": "ihdr" } ], "walked_to": 33, "stopped": { "at": 33, "why": "invalid" }, "facts": { "width": 1, "height": 2, "bit_depth": 16, "colour_type": 2, "interlace": 1, "chunks_read": 1 }, "tracks": [], "capabilities": [ "wai.image.png" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 41, "distinct_bytes": 21, "zero_bytes": 15, "chi_square": 1626, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/png-cut-ihdr.bin", "origin": "gen", "what": "IHDR cut", "sha256": "56dd4012f5aa7b2c048e19f883f1d5c369da59d4de00933a0649a0426eb6cfe1", "result": { "format": "wai.identify/1", "size": 28, "verdict": "signature_only", "candidates": [ { "id": "png", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 8, "is": "signature" } ], "walked_to": 8, "stopped": { "at": 8, "why": "overrun" }, "facts": { "chunks_read": 0 }, "tracks": [], "capabilities": [ "wai.image.png" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 28, "distinct_bytes": 15, "zero_bytes": 11, "chi_square": 1288, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/png-past.bin", "origin": "gen", "what": "a chunk past the file", "sha256": "a6cd3f1946d4a30d5518fe780555c935cd7795957e60cafa5947d483f4c5a414", "result": { "format": "wai.identify/1", "size": 41, "verdict": "identified", "candidates": [ { "id": "png", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 8, "is": "signature" }, { "at": 8, "len": 25, "is": "ihdr" } ], "walked_to": 33, "stopped": { "at": 33, "why": "overrun" }, "facts": { "width": 1, "height": 2, "bit_depth": 16, "colour_type": 2, "interlace": 1, "chunks_read": 1 }, "tracks": [], "capabilities": [ "wai.image.png" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 41, "distinct_bytes": 21, "zero_bytes": 14, "chi_square": 1438, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/png-many.bin", "origin": "gen", "what": "more chunks than a walk reads: limit", "sha256": "58c0010e70fa68be57395b32390da96c3815199072016275a14818271f191b04", "result": { "format": "wai.identify/1", "size": 49185, "verdict": "identified", "candidates": [ { "id": "png", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 8, "is": "signature" }, { "at": 8, "len": 25, "is": "ihdr" } ], "walked_to": 49173, "stopped": { "at": 49173, "why": "limit" }, "facts": { "width": 1, "height": 2, "bit_depth": 16, "colour_type": 2, "interlace": 1, "chunks_read": 4096 }, "tracks": [], "capabilities": [ "wai.image.png" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 49185, "distinct_bytes": 25, "zero_bytes": 16395, "chi_square": 2223167, "windows": 12, "uniform_windows": 0, "text": false, "periods": [ { "lag": 12, "z": 427 } ] } } }, { "file": "gen/jpeg-apps.bin", "origin": "gen", "what": "every application segment named, a fill byte, progressive", "sha256": "b204896d0c5947f885b5c3b1c3e363c2867dba1c96bf353d1e6ed622ec3628ce", "result": { "format": "wai.identify/1", "size": 130, "verdict": "identified", "candidates": [ { "id": "jpeg", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 2, "is": "soi" }, { "at": 107, "len": 19, "is": "sof" }, { "at": 126, "len": 2, "is": "sos" } ], "walked_to": 126, "stopped": null, "facts": { "process": "progressive", "precision": 8, "height": 16, "width": 32, "components": 3, "applications": [ "jfif", "exif", "xmp", "icc", "mpf", "adobe", "other" ] }, "tracks": [], "capabilities": [ "wai.image.jpeg" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 130, "distinct_bytes": 54, "zero_bytes": 18, "chi_square": 1646, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/jpeg-c1.bin", "origin": "gen", "what": "extended", "sha256": "4cba0ac034dac09b648d1f7be6c1b57b54f6fd1e399a76389a653f62640880b2", "result": { "format": "wai.identify/1", "size": 25, "verdict": "identified", "candidates": [ { "id": "jpeg", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 2, "is": "soi" }, { "at": 2, "len": 19, "is": "sof" }, { "at": 21, "len": 2, "is": "sos" } ], "walked_to": 21, "stopped": null, "facts": { "process": "extended", "precision": 8, "height": 16, "width": 32, "components": 3, "applications": [] }, "tracks": [], "capabilities": [ "wai.image.jpeg" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 25, "distinct_bytes": 13, "zero_bytes": 5, "chi_square": 661, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/jpeg-c3.bin", "origin": "gen", "what": "lossless", "sha256": "dff07911dca7225fab4a653cf3bfd8ea92d80e9cfe8d281889e0fd8e6af30dfa", "result": { "format": "wai.identify/1", "size": 25, "verdict": "identified", "candidates": [ { "id": "jpeg", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 2, "is": "soi" }, { "at": 2, "len": 19, "is": "sof" }, { "at": 21, "len": 2, "is": "sos" } ], "walked_to": 21, "stopped": null, "facts": { "process": "lossless", "precision": 8, "height": 16, "width": 32, "components": 3, "applications": [] }, "tracks": [], "capabilities": [ "wai.image.jpeg" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 25, "distinct_bytes": 13, "zero_bytes": 5, "chi_square": 661, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/jpeg-c5.bin", "origin": "gen", "what": "hierarchical", "sha256": "5a7af953fd4b050ce919916e1524a8e3ad2771f11f85d138eef3ea809b839681", "result": { "format": "wai.identify/1", "size": 25, "verdict": "identified", "candidates": [ { "id": "jpeg", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 2, "is": "soi" }, { "at": 2, "len": 19, "is": "sof" }, { "at": 21, "len": 2, "is": "sos" } ], "walked_to": 21, "stopped": null, "facts": { "process": "hierarchical", "precision": 8, "height": 16, "width": 32, "components": 3, "applications": [] }, "tracks": [], "capabilities": [ "wai.image.jpeg" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 25, "distinct_bytes": 13, "zero_bytes": 5, "chi_square": 661, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/jpeg-c9.bin", "origin": "gen", "what": "arithmetic", "sha256": "adabe76bdb7f5542033acfdfaea5bc1a4c519afb2cdd634b32d5ee5525338c1c", "result": { "format": "wai.identify/1", "size": 25, "verdict": "identified", "candidates": [ { "id": "jpeg", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 2, "is": "soi" }, { "at": 2, "len": 19, "is": "sof" }, { "at": 21, "len": 2, "is": "sos" } ], "walked_to": 21, "stopped": null, "facts": { "process": "arithmetic", "precision": 8, "height": 16, "width": 32, "components": 3, "applications": [] }, "tracks": [], "capabilities": [ "wai.image.jpeg" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 25, "distinct_bytes": 13, "zero_bytes": 5, "chi_square": 661, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/jpeg-cf.bin", "origin": "gen", "what": "hierarchical arithmetic", "sha256": "3d5ff5860ee350eddc5c15cbe981a1a748295d2be51fea5a5c9b71bb40f984a9", "result": { "format": "wai.identify/1", "size": 25, "verdict": "identified", "candidates": [ { "id": "jpeg", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 2, "is": "soi" }, { "at": 2, "len": 19, "is": "sof" }, { "at": 21, "len": 2, "is": "sos" } ], "walked_to": 21, "stopped": null, "facts": { "process": "hierarchical", "precision": 8, "height": 16, "width": 32, "components": 3, "applications": [] }, "tracks": [], "capabilities": [ "wai.image.jpeg" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 25, "distinct_bytes": 13, "zero_bytes": 5, "chi_square": 661, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/jpeg-not-sof.bin", "origin": "gen", "what": "the three codes among the frame headers that are not", "sha256": "76f717882d9321446a53ddfa156bf654a814743d19c1a23e29a4d3b730f1b133", "result": { "format": "wai.identify/1", "size": 25, "verdict": "signature_only", "candidates": [ { "id": "jpeg", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 2, "is": "soi" }, { "at": 23, "len": 2, "is": "sos" } ], "walked_to": 23, "stopped": null, "facts": { "applications": [] }, "tracks": [], "capabilities": [ "wai.image.jpeg" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 25, "distinct_bytes": 8, "zero_bytes": 12, "chi_square": 1848, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/jpeg-no-marker.bin", "origin": "gen", "what": "bytes that are no marker", "sha256": "58c531018c1c6d953b7a6bc4a02f3383b06005a793ae2bfb5c5f5cf71164a0cd", "result": { "format": "wai.identify/1", "size": 8, "verdict": "signature_only", "candidates": [ { "id": "jpeg", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 2, "is": "soi" } ], "walked_to": 6, "stopped": { "at": 6, "why": "invalid" }, "facts": { "applications": [ "other" ] }, "tracks": [], "capabilities": [ "wai.image.jpeg" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 8, "distinct_bytes": 7, "zero_bytes": 1, "chi_square": 312, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/jpeg-short-len.bin", "origin": "gen", "what": "a length below itself", "sha256": "780806275d97563cce1485a1bd48f4398ca42c7d0cf279b63d00a4a67ab7cd43", "result": { "format": "wai.identify/1", "size": 6, "verdict": "signature_only", "candidates": [ { "id": "jpeg", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 2, "is": "soi" } ], "walked_to": 2, "stopped": { "at": 2, "why": "invalid" }, "facts": { "applications": [] }, "tracks": [], "capabilities": [ "wai.image.jpeg" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 6, "distinct_bytes": 5, "zero_bytes": 1, "chi_square": 335, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/jpeg-cut-len.bin", "origin": "gen", "what": "a length the file ends in", "sha256": "f55517e918c9f1ac538778a7d787f93b66102886b93464e5bf61b48527913dfd", "result": { "format": "wai.identify/1", "size": 5, "verdict": "signature_only", "candidates": [ { "id": "jpeg", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 2, "is": "soi" } ], "walked_to": 2, "stopped": { "at": 2, "why": "overrun" }, "facts": { "applications": [] }, "tracks": [], "capabilities": [ "wai.image.jpeg" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 5, "distinct_bytes": 4, "zero_bytes": 1, "chi_square": 353, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/jpeg-past.bin", "origin": "gen", "what": "a segment past the file", "sha256": "c1ceced00e8f5672137247eab56083d1eb7ce230f9de3b1c0d83a984bca91ba2", "result": { "format": "wai.identify/1", "size": 7, "verdict": "signature_only", "candidates": [ { "id": "jpeg", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 2, "is": "soi" } ], "walked_to": 2, "stopped": { "at": 2, "why": "overrun" }, "facts": { "applications": [ "other" ] }, "tracks": [], "capabilities": [ "wai.image.jpeg" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 7, "distinct_bytes": 5, "zero_bytes": 2, "chi_square": 395, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/jpeg-cut-sof.bin", "origin": "gen", "what": "a frame header cut", "sha256": "e2eaf59fe38dd7702611ae3c0dfe566724f98dabd2945b956798a574aa46f978", "result": { "format": "wai.identify/1", "size": 7, "verdict": "signature_only", "candidates": [ { "id": "jpeg", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 2, "is": "soi" } ], "walked_to": 2, "stopped": { "at": 2, "why": "overrun" }, "facts": { "applications": [] }, "tracks": [], "capabilities": [ "wai.image.jpeg" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 7, "distinct_bytes": 5, "zero_bytes": 1, "chi_square": 395, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/jpeg-many-fill.bin", "origin": "gen", "what": "more fill than a walk reads: limit", "sha256": "f18a944345126a6fb1dee79dac7d9044850ad76db1c902a2d20d45acf945b6df", "result": { "format": "wai.identify/1", "size": 4100, "verdict": "signature_only", "candidates": [ { "id": "jpeg", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 2, "is": "soi" } ], "walked_to": 4098, "stopped": { "at": 4098, "why": "limit" }, "facts": { "applications": [] }, "tracks": [], "capabilities": [ "wai.image.jpeg" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 4100, "distinct_bytes": 2, "zero_bytes": 0, "chi_square": 1044988, "windows": 1, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/gif-many.bin", "origin": "gen", "what": "more blocks than a walk reads: limit", "sha256": "e637989b634720bee4e9e25713e114ceeae0d96b469a41dc062a32dc29f51f50", "result": { "format": "wai.identify/1", "size": 12304, "verdict": "signature_only", "candidates": [ { "id": "gif", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 6, "is": "signature:GIF89a" } ], "walked_to": 12301, "stopped": { "at": 12301, "why": "limit" }, "facts": { "width": 1, "height": 1, "frames_read": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 12304, "distinct_bytes": 10, "zero_bytes": 4102, "chi_square": 1036272, "windows": 3, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/gif-past-table.bin", "origin": "gen", "what": "a global table past the file", "sha256": "5d9241e9f3bb8db2b678851e76ee98dfb05f50e431cf7b6d4bf2892043cce849", "result": { "format": "wai.identify/1", "size": 13, "verdict": "signature_only", "candidates": [ { "id": "gif", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 6, "is": "signature:GIF89a" } ], "walked_to": 13, "stopped": { "at": 13, "why": "overrun" }, "facts": { "width": 1, "height": 1, "frames_read": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 13, "distinct_bytes": 9, "zero_bytes": 4, "chi_square": 518, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/gif-no-blocks.bin", "origin": "gen", "what": "an image with no sub-blocks", "sha256": "0c9cf152a0ad00d4f102c93c613c104914be5517ac8f8e0831727f8bfbe8b300", "result": { "format": "wai.identify/1", "size": 24, "verdict": "signature_only", "candidates": [ { "id": "gif", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 6, "is": "signature:GIF89a" } ], "walked_to": 13, "stopped": { "at": 13, "why": "overrun" }, "facts": { "width": 1, "height": 1, "frames_read": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 24, "distinct_bytes": 10, "zero_bytes": 12, "chi_square": 1768, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ivf-version.bin", "origin": "gen", "what": "an IVF version not 0", "sha256": "6dc50cfeed80bb276b07a40fddba87ef4089090e8194cdf87c8da9bd0c9ac0de", "result": { "format": "wai.identify/1", "size": 16, "verdict": "signature_only", "candidates": [ { "id": "ivf", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "dkif" } ], "walked_to": 0, "stopped": { "at": 0, "why": "invalid" }, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 16, "distinct_bytes": 12, "zero_bytes": 4, "chi_square": 464, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ivf-no-size.bin", "origin": "gen", "what": "a frame header cut", "sha256": "214ee6339d0999a80193d1bc8d3b459c943d18f5c43787ab0baa2df75d48fc1d", "result": { "format": "wai.identify/1", "size": 34, "verdict": "signature_only", "candidates": [ { "id": "ivf", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "dkif" } ], "walked_to": 32, "stopped": { "at": 32, "why": "overrun" }, "facts": { "frames_read": 0 }, "tracks": [ { "track": null, "media": "video", "stated": "VP90", "codec": "vp9", "width": 0, "height": 0, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.vp9" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 34, "distinct_bytes": 12, "zero_bytes": 23, "chi_square": 4031, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ivf-frame-past.bin", "origin": "gen", "what": "a frame past the file", "sha256": "4c9de913edcc45e667f49a0018327f9a7660ed68be2ca8ff26c3a785b577a076", "result": { "format": "wai.identify/1", "size": 44, "verdict": "signature_only", "candidates": [ { "id": "ivf", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "dkif" } ], "walked_to": 32, "stopped": { "at": 32, "why": "overrun" }, "facts": { "frames_read": 0 }, "tracks": [ { "track": null, "media": "video", "stated": "VP80", "codec": "vp8", "width": 2, "height": 2, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.vp8" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 44, "distinct_bytes": 12, "zero_bytes": 32, "chi_square": 5995, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/y4m-many.bin", "origin": "gen", "what": "more frames than a walk reads: limit", "sha256": "fda3922f9a57e3030e81d638ecc4d9958ad6645b46f4bb5e43e1a8ac5898573a", "result": { "format": "wai.identify/1", "size": 28701, "verdict": "identified", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 28694, "stopped": { "at": 28694, "why": "limit" }, "facts": { "width": 1, "height": 1, "colour": "mono", "frames_read": 4096 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 28701, "distinct_bytes": 22, "zero_bytes": 4097, "chi_square": 1019546, "windows": 7, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/y4m-frame-past.bin", "origin": "gen", "what": "a frame past the file", "sha256": "7b3ab4fa1105918d1b35f2aea6e2ed5aa38129824dfd27d0553b0c93a5a52c4f", "result": { "format": "wai.identify/1", "size": 31, "verdict": "signature_only", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "signature", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 22, "stopped": { "at": 22, "why": "overrun" }, "facts": { "width": 2, "height": 2, "colour": "mono", "frames_read": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 31, "distinct_bytes": 21, "zero_bytes": 3, "chi_square": 439, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/y4m-cut-line.bin", "origin": "gen", "what": "a frame line the file ends in", "sha256": "69a3fc727e4f88330ab057db531479698da79eeb14bbc4d762637234ccaa9946", "result": { "format": "wai.identify/1", "size": 25, "verdict": "signature_only", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "signature", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 22, "stopped": { "at": 22, "why": "overrun" }, "facts": { "width": 2, "height": 2, "colour": "mono", "frames_read": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 25, "distinct_bytes": 20, "zero_bytes": 0, "chi_square": 374, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/y4m-params.bin", "origin": "gen", "what": "the other tokens, a double space, frame parameters", "sha256": "f0de674d0b2dd1c53856e408d2c723a806145f63a7a6d7ca713a0e6d9433aa91", "result": { "format": "wai.identify/1", "size": 64, "verdict": "identified", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 64, "stopped": null, "facts": { "frame_rate": "30:1", "width": 2, "height": 2, "colour": "mono", "frames_read": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 64, "distinct_bytes": 31, "zero_bytes": 4, "chi_square": 816, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/y4m-bad-w.bin", "origin": "gen", "what": "a width that is no number", "sha256": "eafafb366288ca3823ae3bb6de67c7abba58e16e6dae101e675eeaa944f65084", "result": { "format": "wai.identify/1", "size": 16, "verdict": "signature_only", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "signature", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 16, "stopped": { "at": 16, "why": "invalid" }, "facts": { "width": null, "height": 2, "colour": "420" }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 16, "distinct_bytes": 14, "zero_bytes": 0, "chi_square": 304, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/y4m-paldv.bin", "origin": "gen", "what": "the base with a p in its name", "sha256": "05030091dfb2a86f4f1b32751c183c619d57f1c31b2b6954370773b173897ed9", "result": { "format": "wai.identify/1", "size": 38, "verdict": "identified", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 38, "stopped": null, "facts": { "width": 2, "height": 2, "colour": "420paldv", "frames_read": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 38, "distinct_bytes": 24, "zero_bytes": 6, "chi_square": 595, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/y4m-jpeg-mpeg2.bin", "origin": "gen", "what": "420mpeg2", "sha256": "cba3743fb001dcdafbec5572a295ab078b32cbb01904abc559484b1bd547105f", "result": { "format": "wai.identify/1", "size": 38, "verdict": "identified", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 38, "stopped": null, "facts": { "width": 2, "height": 2, "colour": "420mpeg2", "frames_read": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 38, "distinct_bytes": 23, "zero_bytes": 6, "chi_square": 649, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/y4m-jpeg.bin", "origin": "gen", "what": "420jpeg", "sha256": "ece79e9bee7b10b82e46bc65c3fe7fe829bedd89ffd29da62f26d86889062f68", "result": { "format": "wai.identify/1", "size": 37, "verdict": "identified", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 37, "stopped": null, "facts": { "width": 2, "height": 2, "colour": "420jpeg", "frames_read": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 37, "distinct_bytes": 23, "zero_bytes": 6, "chi_square": 606, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/y4m-default.bin", "origin": "gen", "what": "no colour: 420", "sha256": "f6c3d8035b336de61dd7baa9f73ec79ca694cd0e7f46aed8a6f48e9bff6977a1", "result": { "format": "wai.identify/1", "size": 28, "verdict": "identified", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 28, "stopped": null, "facts": { "width": 2, "height": 2, "colour": "420", "frames_read": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 28, "distinct_bytes": 17, "zero_bytes": 6, "chi_square": 630, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/y4m-depth.bin", "origin": "gen", "what": "sixteen bits", "sha256": "d422d804448d2fc2299b5ff0a4096c3486bed7c4a5279888e87b75a424ca384e", "result": { "format": "wai.identify/1", "size": 54, "verdict": "identified", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 54, "stopped": null, "facts": { "width": 2, "height": 2, "colour": "444p16", "frames_read": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 54, "distinct_bytes": 21, "zero_bytes": 24, "chi_square": 2961, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/y4m-pending.bin", "origin": "gen", "what": "a p with no depth: a base not known", "sha256": "4f380185ded5ba588e63f11f55e1d4677249c4a13ba949d3cb296a07a2e2c2fa", "result": { "format": "wai.identify/1", "size": 22, "verdict": "signature_only", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "signature", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 22, "stopped": { "at": 22, "why": "invalid" }, "facts": { "width": 2, "height": 2, "colour": "420p" }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 22, "distinct_bytes": 16, "zero_bytes": 0, "chi_square": 466, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/y4m-huge.bin", "origin": "gen", "what": "a size no frame could have", "sha256": "6299c82335f48bd52fe1c705a53fe03eb95629cc60da0714a5bb003168f70d8f", "result": { "format": "wai.identify/1", "size": 60, "verdict": "signature_only", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "signature", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 60, "stopped": { "at": 60, "why": "invalid" }, "facts": { "width": 18446744073709551615, "height": 18446744073709551615, "colour": "mono" }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 60, "distinct_bytes": 25, "zero_bytes": 0, "chi_square": 1049, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/y4m-too-wide.bin", "origin": "gen", "what": "a width past 64 bits", "sha256": "1680351e0cadbaf4e8cb54e46c35e944f72969ea66686f076f379336a343972c", "result": { "format": "wai.identify/1", "size": 35, "verdict": "signature_only", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "signature", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 35, "stopped": { "at": 35, "why": "invalid" }, "facts": { "width": null, "height": 2, "colour": "420" }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 35, "distinct_bytes": 21, "zero_bytes": 0, "chi_square": 557, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/y4m-binary.bin", "origin": "gen", "what": "a colour that is not text", "sha256": "e4065bd7e1c9f41c99c2113cef664f2b13d6253833c54e05df3790067d4e627f", "result": { "format": "wai.identify/1", "size": 19, "verdict": "signature_only", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "signature", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 19, "stopped": { "at": 19, "why": "invalid" }, "facts": { "width": 2, "height": 2, "colour": "\\xff" }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 19, "distinct_bytes": 15, "zero_bytes": 0, "chi_square": 398, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/flv-many.bin", "origin": "gen", "what": "more tags than a walk reads: limit", "sha256": "16f1636cea9631d817c06ab6cc6341080ea27a393114c28db59823a5235b00ac", "result": { "format": "wai.identify/1", "size": 61468, "verdict": "identified", "candidates": [ { "id": "flv", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": 61453, "stopped": { "at": 61453, "why": "limit" }, "facts": { "tags_read": 4096 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 61468, "distinct_bytes": 9, "zero_bytes": 53268, "chi_square": 11895793, "windows": 15, "uniform_windows": 0, "text": false, "periods": [ { "lag": 15, "z": 68 } ] } } }, { "file": "gen/flv-past-offset.bin", "origin": "gen", "what": "a data offset past the file", "sha256": "45cb21e701818880e01e59d67f2cc503218348990f730033b6d9ea17d6af34fc", "result": { "format": "wai.identify/1", "size": 10, "verdict": "signature_only", "candidates": [ { "id": "flv", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": 10, "stopped": { "at": 10, "why": "overrun" }, "facts": { "tags_read": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 10, "distinct_bytes": 7, "zero_bytes": 3, "chi_square": 450, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/flv-enhanced-short.bin", "origin": "gen", "what": "the enhanced form with too few bytes to name a codec", "sha256": "efa6305c35f7b2cb5fc01ef15f2c40c481c3c0eade2fa3fd03c34a9a51819321", "result": { "format": "wai.identify/1", "size": 30, "verdict": "identified", "candidates": [ { "id": "flv", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": 30, "stopped": null, "facts": { "tags_read": 1 }, "tracks": [ { "track": null, "media": "video", "stated": "\\x00\\x00\\x00\\x00", "codec": null, "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 30, "distinct_bytes": 10, "zero_bytes": 20, "chi_square": 3485, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/flv-codecs.bin", "origin": "gen", "what": "the first video tag is the one reported", "sha256": "63bf36195f66c6c925adc551d6172525ca313588df1fdb59604f893c0145e417", "result": { "format": "wai.identify/1", "size": 72, "verdict": "identified", "candidates": [ { "id": "flv", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": 72, "stopped": null, "facts": { "tags_read": 3 }, "tracks": [ { "track": null, "media": "video", "stated": "avc1", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": null, "media": "audio", "stated": "sound_format:10", "codec": "aac", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.audio.aac", "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 72, "distinct_bytes": 19, "zero_bytes": 46, "chi_square": 7608, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/flv-hvc.bin", "origin": "gen", "what": "enhanced H.265", "sha256": "114f81cca0c27c20180090d99794733ba574e6e8dd3060d301a684652328ad2a", "result": { "format": "wai.identify/1", "size": 34, "verdict": "identified", "candidates": [ { "id": "flv", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": 34, "stopped": null, "facts": { "tags_read": 1 }, "tracks": [ { "track": null, "media": "video", "stated": "hvc1", "codec": "hevc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.hevc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 34, "distinct_bytes": 14, "zero_bytes": 20, "chi_square": 3098, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/flv-vp9.bin", "origin": "gen", "what": "enhanced VP9", "sha256": "b194b1c2b35b1a6d37fce434e73f47981e70188384e1197ffea5d34604ad884f", "result": { "format": "wai.identify/1", "size": 34, "verdict": "identified", "candidates": [ { "id": "flv", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": 34, "stopped": null, "facts": { "tags_read": 1 }, "tracks": [ { "track": null, "media": "video", "stated": "vp09", "codec": "vp9", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.vp9" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 34, "distinct_bytes": 14, "zero_bytes": 20, "chi_square": 3098, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/flv-avc1.bin", "origin": "gen", "what": "enhanced H.264", "sha256": "8d1b5effa77d1bc353989cf3118749e0f1f3933e561207319c5e995eb00c210f", "result": { "format": "wai.identify/1", "size": 34, "verdict": "identified", "candidates": [ { "id": "flv", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": 34, "stopped": null, "facts": { "tags_read": 1 }, "tracks": [ { "track": null, "media": "video", "stated": "avc1", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 34, "distinct_bytes": 14, "zero_bytes": 20, "chi_square": 3098, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/av1-many.bin", "origin": "gen", "what": "more OBUs than a walk reads: limit", "sha256": "1dbed5ae52d22e7279d80502348d5503e23bafbe1a214119d8597982c97ed4bf", "result": { "format": "wai.identify/1", "size": 8199, "verdict": "identified", "candidates": [ { "id": "av1-obu", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 0, "len": 7, "is": "sequence_header" } ], "walked_to": 8197, "stopped": { "at": 8197, "why": "limit" }, "facts": { "profile": 0, "level": 4, "width": 256, "height": 128, "units_read": 4096 }, "tracks": [], "capabilities": [ "wai.video.av1" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 8199, "distinct_bytes": 9, "zero_bytes": 4096, "chi_square": 1039481, "windows": 2, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/av1-long-uvlc.bin", "origin": "gen", "what": "a variable-length value too long: no reading, so no candidate", "sha256": "5f21fc206247f3e3f6cf1b17d90c6d47401f7436a4d780358c6c3fd7b164ce5a", "result": { "format": "wai.identify/1", "size": 19, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 19, "distinct_bytes": 7, "zero_bytes": 10, "chi_square": 1557, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/av1-first-other.bin", "origin": "gen", "what": "a first OBU that is neither: no candidate", "sha256": "ed1082182cae05b59d54edfc8ea688c17fb82a54df919d10b4346f6cd3ef657b", "result": { "format": "wai.identify/1", "size": 10, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 10, "distinct_bytes": 9, "zero_bytes": 0, "chi_square": 297, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/av1-no-size.bin", "origin": "gen", "what": "no size field: no candidate", "sha256": "736722f22cbebd49059bbc5d24c1bf71acabcabc8a4ba8d3776392d54728dc91", "result": { "format": "wai.identify/1", "size": 3, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 3, "distinct_bytes": 2, "zero_bytes": 2, "chi_square": 423, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/av1-cut-size.bin", "origin": "gen", "what": "a size the bytes end in: no candidate", "sha256": "386866abef68b72156296521a6fc2f0ab4911e3c5ddb76a805d4ea03c7b9ce0d", "result": { "format": "wai.identify/1", "size": 2, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 2, "distinct_bytes": 2, "zero_bytes": 0, "chi_square": 254, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-scaling.bin", "origin": "gen", "what": "scaling lists, with a delta ending one", "sha256": "f62a9eb0ecbd7a70879dc31e1858725e649c167a33984ae65d7352905a3071cc", "result": { "format": "wai.identify/1", "size": 33, "verdict": "identified", "candidates": [ { "id": "avc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 4, "len": 17, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 3, "profile_idc": 100, "constraint_flags": 0, "level_idc": 40, "chroma_format_idc": 1, "width": 64, "height": 64 }, "tracks": [], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 33, "distinct_bytes": 19, "zero_bytes": 10, "chi_square": 1029, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-444-separate.bin", "origin": "gen", "what": "4:4:4 with separate planes, twelve lists absent, picture order type 1, a crop in luma samples", "sha256": "d1b984bf0b55de569f6a8ee78d920bb184c6dd03a9f7d2f61648a12aac905043", "result": { "format": "wai.identify/1", "size": 29, "verdict": "identified", "candidates": [ { "id": "avc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 4, "len": 13, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 3, "profile_idc": 100, "constraint_flags": 0, "level_idc": 40, "chroma_format_idc": 3, "width": 30, "height": 30 }, "tracks": [], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 29, "distinct_bytes": 17, "zero_bytes": 10, "chi_square": 1127, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-interlaced.bin", "origin": "gen", "what": "interlaced: map units are pairs of rows", "sha256": "2c79ed8729b0830f44d59374dca149975c35ff0db6e7a8bf8168c504d241be08", "result": { "format": "wai.identify/1", "size": 24, "verdict": "identified", "candidates": [ { "id": "avc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 4, "len": 8, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 3, "profile_idc": 77, "constraint_flags": 0, "level_idc": 30, "chroma_format_idc": 1, "width": 28, "height": 56 }, "tracks": [], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 24, "distinct_bytes": 13, "zero_bytes": 10, "chi_square": 1256, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-mono.bin", "origin": "gen", "what": "monochrome: a crop in luma samples", "sha256": "e6f988ac9fac9f65edc5f3e864e8b4964fe76b044acbd05dd34606751963e248", "result": { "format": "wai.identify/1", "size": 25, "verdict": "identified", "candidates": [ { "id": "avc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 4, "len": 9, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 3, "profile_idc": 100, "constraint_flags": 0, "level_idc": 40, "chroma_format_idc": 0, "width": 30, "height": 30 }, "tracks": [], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 25, "distinct_bytes": 14, "zero_bytes": 10, "chi_square": 1214, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-chroma.bin", "origin": "gen", "what": "a chroma format not defined: no reading", "sha256": "f0c00656bd5edd5a2e1396380339faf8c454c8b971e47b1e164a574ba1a56e5f", "result": { "format": "wai.identify/1", "size": 21, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 21, "distinct_bytes": 10, "zero_bytes": 10, "chi_square": 1405, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-poc.bin", "origin": "gen", "what": "a picture order type not defined: no reading", "sha256": "a7a75ae6a01c2ecc50e274efc239a1efda5da65f08c58dbcd6eb60d829d2cc33", "result": { "format": "wai.identify/1", "size": 21, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 21, "distinct_bytes": 10, "zero_bytes": 10, "chi_square": 1405, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-poc-many.bin", "origin": "gen", "what": "more picture order offsets than allowed: no reading", "sha256": "1e7412501ec504dbc2ca6c4830991f384503bbb0b0d44dfeb24273e4dca0fc36", "result": { "format": "wai.identify/1", "size": 24, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 24, "distinct_bytes": 12, "zero_bytes": 11, "chi_square": 1469, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-crop.bin", "origin": "gen", "what": "a crop larger than the picture: no reading", "sha256": "a3ac280225bd583e05e60ee3fbc1b2778b235234075f2e92d34b89c6075522ad", "result": { "format": "wai.identify/1", "size": 26, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 26, "distinct_bytes": 14, "zero_bytes": 10, "chi_square": 1194, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-cut-sps.bin", "origin": "gen", "what": "a parameter set cut: no reading", "sha256": "09e020a8cf1c541485d8d0625db34e0f8c2bd72bf81119043cc4b83e5d5c5f2b", "result": { "format": "wai.identify/1", "size": 19, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 19, "distinct_bytes": 8, "zero_bytes": 10, "chi_square": 1530, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-long-ue.bin", "origin": "gen", "what": "a code too long: no reading", "sha256": "ccd8388841a6974959ad726302a440056347a4ba8f2e0060e6937e638c2ebe12", "result": { "format": "wai.identify/1", "size": 29, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 29, "distinct_bytes": 10, "zero_bytes": 18, "chi_square": 2981, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-forbidden.bin", "origin": "gen", "what": "a forbidden bit: no reading", "sha256": "cf81fdd9eb37f4526e4c302d31164e569a5a9f147ef877aa7eeb43ac8cf2bea2", "result": { "format": "wai.identify/1", "size": 26, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 26, "distinct_bytes": 14, "zero_bytes": 10, "chi_square": 1194, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-no-ref.bin", "origin": "gen", "what": "a parameter set with no reference level: no reading", "sha256": "24c48d871c37b27a8fe966af710bd611a7ab07075584cc16fe3a8c19b1e3d84b", "result": { "format": "wai.identify/1", "size": 26, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 26, "distinct_bytes": 14, "zero_bytes": 10, "chi_square": 1194, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-type-22.bin", "origin": "gen", "what": "a reserved type: no reading", "sha256": "5ecfb25f32a429b3583514caf0ad01f4fe588e630a73b1999a47425a07522f5e", "result": { "format": "wai.identify/1", "size": 26, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 26, "distinct_bytes": 14, "zero_bytes": 10, "chi_square": 1194, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-pps-first.bin", "origin": "gen", "what": "parameter sets out of order: no reading", "sha256": "d1c8c700c5908b732d82169a56fe6e0cf0369da5d084ca10788057e8f6ede635", "result": { "format": "wai.identify/1", "size": 26, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 26, "distinct_bytes": 14, "zero_bytes": 10, "chi_square": 1194, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/annexb-empty-unit.bin", "origin": "gen", "what": "an empty unit: no reading", "sha256": "820f25ca05b7c491c664d0660f25d0adc5c02b99fb14f1f09d8cdd1113817e7a", "result": { "format": "wai.identify/1", "size": 16, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 16, "distinct_bytes": 4, "zero_bytes": 9, "chi_square": 1552, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/annexb-first-empty.bin", "origin": "gen", "what": "a prefix and nothing", "sha256": "cf7605ed1bc735f6c825554154627467e1cac9df54cee8699218ed434603c568", "result": { "format": "wai.identify/1", "size": 3, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 3, "distinct_bytes": 2, "zero_bytes": 2, "chi_square": 423, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/annexb-one-zero.bin", "origin": "gen", "what": "one zero before the 1 is no prefix", "sha256": "29c4c33f7a5fe195355678fe706c504320eb8f44baa58e4ff85081f647300258", "result": { "format": "wai.identify/1", "size": 4, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 4, "distinct_bytes": 4, "zero_bytes": 1, "chi_square": 252, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/annexb-all-zero.bin", "origin": "gen", "what": "only zeros", "sha256": "66687aadf862bd776c8fc18b8e9f8e20089714856ee233b3902a591d0d5f2925", "result": { "format": "wai.identify/1", "size": 32, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 32, "distinct_bytes": 1, "zero_bytes": 32, "chi_square": 8160, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/annexb-one-byte.bin", "origin": "gen", "what": "a unit too short for a two-byte header: neither of those readings", "sha256": "939bbdcc1192a4815236eaeec0e588930431445df5764646f50c45f0e99eb112", "result": { "format": "wai.identify/1", "size": 17, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 17, "distinct_bytes": 5, "zero_bytes": 9, "chi_square": 1624, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/hevc-illegal-type.bin", "origin": "gen", "what": "a reserved H.265 type: no reading", "sha256": "dc94299af96c8b628be9a3ef705ef22cc7bc8693b35dcc6749f4ba429548ab41", "result": { "format": "wai.identify/1", "size": 24, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 24, "distinct_bytes": 6, "zero_bytes": 12, "chi_square": 2237, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/hevc-zero-tid.bin", "origin": "gen", "what": "a temporal identifier of zero plus one: no reading", "sha256": "4272b1cd2e63ed71eeaed64717f5fb406e65652dabc1c2e60bfaed6234defd20", "result": { "format": "wai.identify/1", "size": 18, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 18, "distinct_bytes": 5, "zero_bytes": 10, "chi_square": 1802, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/hevc-forbidden.bin", "origin": "gen", "what": "a forbidden bit in H.265: no reading", "sha256": "5d0789623afca4cad32494e3f981b96326a306b62c009281a65364be3781237e", "result": { "format": "wai.identify/1", "size": 18, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 18, "distinct_bytes": 5, "zero_bytes": 9, "chi_square": 1688, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/vvc-illegal-type.bin", "origin": "gen", "what": "a reserved H.266 type: no reading", "sha256": "b84e7043823d2752f278a09883c9645c1b3b39ea6d7eff6cf51ab83af1bd27f8", "result": { "format": "wai.identify/1", "size": 18, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 18, "distinct_bytes": 5, "zero_bytes": 12, "chi_square": 2200, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/vvc-zero-tid.bin", "origin": "gen", "what": "a temporal identifier of zero plus one in H.266: no reading", "sha256": "eb27d661d7c9014f358d5fc94c0821c6c390779b054bfdc6546cc5d8a695d154", "result": { "format": "wai.identify/1", "size": 12, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 12, "distinct_bytes": 4, "zero_bytes": 8, "chi_square": 1481, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/vvc-reserved.bin", "origin": "gen", "what": "the reserved bit in H.266: no reading", "sha256": "bc4695d114bfc5cbde6414006b51a38026254de674cae0db6bfa800f016e82d9", "result": { "format": "wai.identify/1", "size": 12, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 12, "distinct_bytes": 5, "zero_bytes": 7, "chi_square": 1182, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/vvc-picture-first.bin", "origin": "gen", "what": "a picture before H.266's parameter sets: no reading", "sha256": "9e78965daa58de3a440ad0e36305c31e6c1e275eb13f70cd258839597406f1c7", "result": { "format": "wai.identify/1", "size": 18, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 18, "distinct_bytes": 5, "zero_bytes": 12, "chi_square": 2200, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/text-control.bin", "origin": "gen", "what": "a control byte: not text", "sha256": "629424c3acef46e42436a5fc884e066b621b4c9d5e08a5b6c94a07d94840f33a", "result": { "format": "wai.identify/1", "size": 10, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 10, "distinct_bytes": 9, "zero_bytes": 0, "chi_square": 297, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/text-del.bin", "origin": "gen", "what": "DEL: not text", "sha256": "e992d46802a32cc6d298b114bd8819d73e9fda6b4e4a99b158fe1229be69459e", "result": { "format": "wai.identify/1", "size": 10, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 10, "distinct_bytes": 9, "zero_bytes": 0, "chi_square": 297, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/text-bad-utf8.bin", "origin": "gen", "what": "invalid UTF-8: not text", "sha256": "0523a8655e929029b38ce0e1f7d908d5ee545836af4692f6b06868b1898d0680", "result": { "format": "wai.identify/1", "size": 10, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 10, "distinct_bytes": 9, "zero_bytes": 0, "chi_square": 297, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/text-cut-utf8.bin", "origin": "gen", "what": "a sequence the file's end cuts: text", "sha256": "dba49e41d842f5f0f6832c2dfcbf6a13acf89005b0bc7b1081a660a3496636fe", "result": { "format": "wai.identify/1", "size": 11, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 11, "distinct_bytes": 10, "zero_bytes": 0, "chi_square": 291, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/short-noise.bin", "origin": "gen", "what": "too short to repeat", "sha256": "0df00818f135433141de824818c17131808a44c26252f5aadef5060189bf3799", "result": { "format": "wai.identify/1", "size": 8, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 8, "distinct_bytes": 8, "zero_bytes": 0, "chi_square": 248, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/uniform-edge.bin", "origin": "gen", "what": "windows at and near the uniform bound", "sha256": "c71135866080368ccf44731c1aff77ab5987e1d300c833d4eeb5ec07ee253cf3", "result": { "format": "wai.identify/1", "size": 8192, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 8192, "distinct_bytes": 247, "zero_bytes": 0, "chi_square": 620, "windows": 2, "uniform_windows": 1, "text": false, "periods": [] } } }, { "file": "gen/mkv-inner-past.bin", "origin": "gen", "what": "inside a track, an element past its parent", "sha256": "2fae18f975308fe9ee7d2e08c7b90ce82522f0b5be6fe623e8b11bef2968fbd0", "result": { "format": "wai.identify/1", "size": 42, "verdict": "identified", "candidates": [ { "id": "matroska", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "ebml" }, { "at": 20, "len": 4, "is": "segment" }, { "at": 32, "len": 4, "is": "tracks" } ], "walked_to": 42, "stopped": null, "facts": { "doc_type": "matroska", "doc_type_version": 4 }, "tracks": [ { "track": null, "media": "other", "stated": "", "codec": null, "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 42, "distinct_bytes": 31, "zero_bytes": 0, "chi_square": 530, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/png-ihdr-only.bin", "origin": "gen", "what": "the file ends where a chunk would begin", "sha256": "7ecf93b749046b1fd25ee55c29fa446a10db42f848f0e5ed7e30f339d25b3691", "result": { "format": "wai.identify/1", "size": 33, "verdict": "identified", "candidates": [ { "id": "png", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 8, "is": "signature" }, { "at": 8, "len": 25, "is": "ihdr" } ], "walked_to": 33, "stopped": { "at": 33, "why": "overrun" }, "facts": { "width": 1, "height": 2, "bit_depth": 16, "colour_type": 2, "interlace": 1, "chunks_read": 1 }, "tracks": [], "capabilities": [ "wai.image.png" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 33, "distinct_bytes": 19, "zero_bytes": 11, "chi_square": 1138, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/jpeg-ends.bin", "origin": "gen", "what": "the file ends where a marker would begin", "sha256": "8b8ca4dabac86957f790e70cf621436ff4d8b2bce1dd580c1b51c34fbca759a8", "result": { "format": "wai.identify/1", "size": 6, "verdict": "signature_only", "candidates": [ { "id": "jpeg", "kind": "image", "strength": "signature", "evidence": [ { "at": 0, "len": 2, "is": "soi" } ], "walked_to": 6, "stopped": { "at": 6, "why": "overrun" }, "facts": { "applications": [ "other" ] }, "tracks": [], "capabilities": [ "wai.image.jpeg" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 6, "distinct_bytes": 5, "zero_bytes": 1, "chi_square": 335, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/y4m-depth-past.bin", "origin": "gen", "what": "a depth past 64 bits", "sha256": "28490a635e6d45cc84faa0e85eaa96e61c511dff2c890e7c45631e318012dd33", "result": { "format": "wai.identify/1", "size": 42, "verdict": "signature_only", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "signature", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 42, "stopped": { "at": 42, "why": "invalid" }, "facts": { "width": 2, "height": 2, "colour": "420p18446744073709551616" }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 42, "distinct_bytes": 23, "zero_bytes": 0, "chi_square": 665, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/dash-no-comment-end.bin", "origin": "gen", "what": "a comment with no end: no candidate", "sha256": "952e09415e3bc8333d5fb5b4a50286b3df6741484f409746d0bcf8f609a3cbde", "result": { "format": "wai.identify/1", "size": 15, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 15, "distinct_bytes": 10, "zero_bytes": 0, "chi_square": 445, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/dash-no-quote.bin", "origin": "gen", "what": "a codecs value with no end", "sha256": "049cb1d7d2f4c9d913463ec244caadb2686289954bc6954911a0e7822988fcc8", "result": { "format": "wai.identify/1", "size": 17, "verdict": "signature_only", "candidates": [ { "id": "dash", "kind": "playlist", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "mpd" } ], "walked_to": null, "stopped": null, "facts": { "type": null, "periods": 0, "adaptation_sets": 0, "representations": 0, "content_protection": 0, "codecs": [] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 17, "distinct_bytes": 16, "zero_bytes": 0, "chi_square": 269, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/nine-periods.bin", "origin": "gen", "what": "nine repeats: eight reported", "sha256": "781d3d533569283d559ad0978bce78666644a279dbeb9f0177367f5b18d4f216", "result": { "format": "wai.identify/1", "size": 64000, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 64000, "distinct_bytes": 256, "zero_bytes": 223, "chi_square": 10038, "windows": 15, "uniform_windows": 0, "text": false, "periods": [ { "lag": 101, "z": 32 }, { "lag": 103, "z": 29 }, { "lag": 107, "z": 28 }, { "lag": 109, "z": 29 }, { "lag": 113, "z": 29 }, { "lag": 127, "z": 25 }, { "lag": 131, "z": 24 }, { "lag": 137, "z": 24 } ] } } }, { "file": "gen/wai1-trailing.bin", "origin": "gen", "what": "bytes after a WAI1's payload: the walk ends at the payload's end", "sha256": "02076db270eba975e46281a0ab453d21fff85f7dc9ac3e8a7bebdf41decce2e2", "result": { "format": "wai.identify/1", "size": 70, "verdict": "identified", "candidates": [ { "id": "wai", "kind": "wai", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "magic:WAI1" }, { "at": 8, "len": 52, "is": "manifest" }, { "at": 60, "len": 4, "is": "payload_length" } ], "walked_to": 68, "stopped": null, "facts": { "version": 1, "capability": "wai.image.png" }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 70, "distinct_bytes": 33, "zero_bytes": 6, "chi_square": 727, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/wai2-trailing.bin", "origin": "gen", "what": "bytes after a WAI2's rendition count", "sha256": "12c857f146f05e35eda2c3281f19069bff158fb9e8c6f9571e6757e63f3ab7b4", "result": { "format": "wai.identify/1", "size": 14, "verdict": "identified", "candidates": [ { "id": "wai", "kind": "wai", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "magic:WAI2" }, { "at": 8, "len": 2, "is": "manifest" }, { "at": 10, "len": 2, "is": "rendition_count" } ], "walked_to": 12, "stopped": null, "facts": { "version": 2, "renditions": 3 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 14, "distinct_bytes": 10, "zero_bytes": 4, "chi_square": 498, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/wai1-limit-exact.bin", "origin": "gen", "what": "a manifest of exactly 1 MiB declared, in a file too short: overrun, not limit", "sha256": "14dc66015c8c1ec3d7e544be6ca355087aa1d3d483844848b33efc2f6d4d4d2a", "result": { "format": "wai.identify/1", "size": 10, "verdict": "signature_only", "candidates": [ { "id": "wai", "kind": "wai", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "magic:WAI1" } ], "walked_to": 8, "stopped": { "at": 8, "why": "overrun" }, "facts": { "version": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 10, "distinct_bytes": 8, "zero_bytes": 3, "chi_square": 399, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/wai1-requirement.bin", "origin": "gen", "what": "a model requirement that is not an object: no capability", "sha256": "b3cde2d22dc4466a4aa84deba7d0c513b89d4e62c12a6e5ae41d6082b9d7d2f1", "result": { "format": "wai.identify/1", "size": 35, "verdict": "identified", "candidates": [ { "id": "wai", "kind": "wai", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "magic:WAI1" }, { "at": 8, "len": 23, "is": "manifest" }, { "at": 31, "len": 4, "is": "payload_length" } ], "walked_to": 35, "stopped": null, "facts": { "version": 1, "capability": null }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 35, "distinct_bytes": 23, "zero_bytes": 7, "chi_square": 659, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/iso-edges.bin", "origin": "gen", "what": "17 brands and 17 box types, a 64-bit size of exactly 16, a type with a space and a tilde, a track in a free box, hdlr and schm of their least length, a five-byte frma, an audio entry's revision", "sha256": "c58ae664153ab7961ddd63f5b7630ef456bcd83525fdc1fcfd4f479a33245c28", "result": { "format": "wai.identify/1", "size": 639, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 88, "len": 4, "is": "box:skip" }, { "at": 104, "len": 4, "is": "box:qa ~" }, { "at": 112, "len": 4, "is": "box:qb ~" }, { "at": 120, "len": 4, "is": "box:qc ~" }, { "at": 128, "len": 4, "is": "box:qd ~" }, { "at": 136, "len": 4, "is": "box:qe ~" }, { "at": 144, "len": 4, "is": "box:qf ~" } ], "walked_to": 639, "stopped": null, "facts": { "major_brand": "isom", "compatible_brands": [ "brna", "brnb", "brnc", "brnd", "brne", "brnf", "brng", "brnh", "brni", "brnj", "brnk", "brnl", "brnm", "brnn", "brno", "brnp" ], "boxes": [ "ftyp", "skip", "qa ~", "qb ~", "qc ~", "qd ~", "qe ~", "qf ~", "qg ~", "qh ~", "qi ~", "qj ~", "qk ~", "ql ~", "qm ~", "qn ~" ] }, "tracks": [ { "track": 7, "media": "audio", "stated": "enca", "codec": null, "width": null, "height": null, "channels": 2, "sample_rate": 48000, "protected": { "scheme": "cens", "original": "mp4a" } } ], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 639, "distinct_bytes": 49, "zero_bytes": 332, "chi_square": 45224, "windows": 0, "uniform_windows": 0, "text": false, "periods": [ { "lag": 8, "z": 15 } ] } } }, { "file": "gen/iso-moov-to-end.bin", "origin": "gen", "what": "a moov of size 0, to the file's end", "sha256": "e79f8e6a99729145d7e1a1e7800414e7e9dc40c61dc806e4eda450dd0aa92fe4", "result": { "format": "wai.identify/1", "size": 222, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 20, "len": 4, "is": "box:moov" } ], "walked_to": 222, "stopped": null, "facts": { "major_brand": "isom", "compatible_brands": [], "boxes": [ "ftyp", "moov" ] }, "tracks": [ { "track": 7, "media": "video", "stated": "hvc1", "codec": "hevc", "width": 640, "height": 360, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.hevc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 222, "distinct_bytes": 30, "zero_bytes": 160, "chi_square": 29513, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/iso-moov-large.bin", "origin": "gen", "what": "a moov of 64-bit size", "sha256": "2e24b56bafb0723930c554b7debdd0c59f0e3722d88eb8309ef8eeaeaf270a54", "result": { "format": "wai.identify/1", "size": 230, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 20, "len": 4, "is": "box:moov" } ], "walked_to": 230, "stopped": null, "facts": { "major_brand": "isom", "compatible_brands": [], "boxes": [ "ftyp", "moov" ] }, "tracks": [ { "track": 7, "media": "video", "stated": "av01", "codec": "av1", "width": 640, "height": 360, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.av1" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 230, "distinct_bytes": 31, "zero_bytes": 166, "chi_square": 30650, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/iso-type-del.bin", "origin": "gen", "what": "a box type holding 0x7F: invalid", "sha256": "92f0ee7b467e81c9fe1746f198b1cb6aca68457840c3ab70a3b5eabac669b1ce", "result": { "format": "wai.identify/1", "size": 24, "verdict": "signature_only", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "signature", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" } ], "walked_to": 16, "stopped": { "at": 16, "why": "invalid" }, "facts": { "major_brand": "isom", "compatible_brands": [], "boxes": [ "ftyp" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 24, "distinct_bytes": 15, "zero_bytes": 10, "chi_square": 1192, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mkv-edges.bin", "origin": "gen", "what": "a rate of 1.5 and one of 2^64, a track number of eight bytes, an element the entry ends inside", "sha256": "eaa1a5c23c9398302af244a7f029882ea09594b8876f1b93fd75721f72655d36", "result": { "format": "wai.identify/1", "size": 90, "verdict": "identified", "candidates": [ { "id": "matroska", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "ebml" }, { "at": 20, "len": 4, "is": "segment" }, { "at": 32, "len": 4, "is": "tracks" } ], "walked_to": 90, "stopped": null, "facts": { "doc_type": "matroska", "doc_type_version": 4 }, "tracks": [ { "track": 1, "media": "audio", "stated": "", "codec": null, "width": null, "height": null, "channels": null, "sample_rate": 1, "protected": null }, { "track": 2, "media": "audio", "stated": "", "codec": null, "width": null, "height": null, "channels": null, "sample_rate": 18446744073709551615, "protected": null }, { "track": 72623859790382856, "media": "other", "stated": "", "codec": null, "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 90, "distinct_bytes": 45, "zero_bytes": 12, "chi_square": 928, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mkv-five.bin", "origin": "gen", "what": "five bytes after the header that are not a Segment: invalid", "sha256": "b5ada1331ef44188700da014590ff3633866d13f9c5f1593dbd3f7d774d63548", "result": { "format": "wai.identify/1", "size": 25, "verdict": "signature_only", "candidates": [ { "id": "matroska", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "ebml" } ], "walked_to": 20, "stopped": { "at": 20, "why": "invalid" }, "facts": { "doc_type": "matroska", "doc_type_version": 4 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 25, "distinct_bytes": 23, "zero_bytes": 0, "chi_square": 271, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ts-af-pat.bin", "origin": "gen", "what": "a program table after an adaptation field, and a program's protection descriptor that ends its list", "sha256": "1826cd1e410a7a4b89c11a92a196e35b23803af7b82f4ed0ce0b98c9d22790e5", "result": { "format": "wai.identify/1", "size": 940, "verdict": "identified", "candidates": [ { "id": "mpeg-ts", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 1, "is": "sync" }, { "at": 7, "len": 16, "is": "pat" }, { "at": 193, "len": 23, "is": "pmt" } ], "walked_to": 940, "stopped": null, "facts": { "packet_size": 188, "packets_read": 5, "scrambled_packets": 0, "programs": 1 }, "tracks": [ { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": { "scheme": null, "original": null } } ], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 940, "distinct_bytes": 25, "zero_bytes": 19, "chi_square": 208658, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ts-descriptors.bin", "origin": "gen", "what": "a protection descriptor after another, and one that is not protection", "sha256": "0bbc2b553130cd9b2606497d579e41617960387f0c949373df57ba28d7ebd768", "result": { "format": "wai.identify/1", "size": 940, "verdict": "identified", "candidates": [ { "id": "mpeg-ts", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 1, "is": "sync" }, { "at": 5, "len": 16, "is": "pat" }, { "at": 193, "len": 33, "is": "pmt" } ], "walked_to": 940, "stopped": null, "facts": { "packet_size": 188, "packets_read": 5, "scrambled_packets": 0, "programs": 1 }, "tracks": [ { "track": 273, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": { "scheme": null, "original": null } }, { "track": 274, "media": "audio", "stated": "stream_type:0x0f", "codec": "aac", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.audio.aac", "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 940, "distinct_bytes": 30, "zero_bytes": 17, "chi_square": 204843, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ts-edges.bin", "origin": "gen", "what": "an adaptation field filling its packet, then a program table ending at its packet's last byte", "sha256": "fefd251e7841989f6464d3d17616c294ea3161b321a42199e56dbdbcdae7c34e", "result": { "format": "wai.identify/1", "size": 940, "verdict": "identified", "candidates": [ { "id": "mpeg-ts", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 1, "is": "sync" }, { "at": 360, "len": 16, "is": "pat" } ], "walked_to": 940, "stopped": null, "facts": { "packet_size": 188, "packets_read": 5, "scrambled_packets": 0, "programs": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 940, "distinct_bytes": 19, "zero_bytes": 10, "chi_square": 220683, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ts-empty-pat.bin", "origin": "gen", "what": "a program table of twelve bytes: read, no programs", "sha256": "00332c2e5c33dd0d973ecff27d1ae3b0f81d5752ff385dcd733ed7263d1535c3", "result": { "format": "wai.identify/1", "size": 940, "verdict": "identified", "candidates": [ { "id": "mpeg-ts", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 1, "is": "sync" }, { "at": 5, "len": 12, "is": "pat" } ], "walked_to": 940, "stopped": null, "facts": { "packet_size": 188, "packets_read": 5, "scrambled_packets": 0, "programs": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 940, "distinct_bytes": 14, "zero_bytes": 10, "chi_square": 223148, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ts-65-programs.bin", "origin": "gen", "what": "65 programs: 64 are read", "sha256": "5e801c57f5e5e76c235f83ebe7f76186cd3f456669644a10fee08bc7d485de4a", "result": { "format": "wai.identify/1", "size": 940, "verdict": "identified", "candidates": [ { "id": "mpeg-ts", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 1, "is": "sync" }, { "at": 5, "len": 272, "is": "pat" } ], "walked_to": 940, "stopped": null, "facts": { "packet_size": 188, "packets_read": 5, "scrambled_packets": 0, "programs": 64 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 940, "distinct_bytes": 73, "zero_bytes": 141, "chi_square": 119669, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ts-two-bytes.bin", "origin": "gen", "what": "a section whose first packet holds two of its bytes", "sha256": "4088b695d99cb3912b198d7dabdc4c5b57189b96b662ec4f816a7c46f8615a4a", "result": { "format": "wai.identify/1", "size": 940, "verdict": "identified", "candidates": [ { "id": "mpeg-ts", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 1, "is": "sync" }, { "at": 186, "len": 16, "is": "pat" } ], "walked_to": 940, "stopped": null, "facts": { "packet_size": 188, "packets_read": 5, "scrambled_packets": 0, "programs": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 940, "distinct_bytes": 17, "zero_bytes": 12, "chi_square": 221185, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ogg-edges.bin", "origin": "gen", "what": "a continued page is no stream's start; heads too short for their channels", "sha256": "115156a287bdd49f269734a9ca96e3cba5607d699c5d5571988e1de65810a0f2", "result": { "format": "wai.identify/1", "size": 120, "verdict": "identified", "candidates": [ { "id": "ogg", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 44, "is": "page" }, { "at": 44, "len": 37, "is": "page" }, { "at": 81, "len": 39, "is": "page" } ], "walked_to": 120, "stopped": null, "facts": { "pages_read": 3 }, "tracks": [ { "track": 1, "media": "audio", "stated": "OpusHead", "codec": "opus", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null }, { "track": 2, "media": "audio", "stated": "vorbis", "codec": "vorbis", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.audio.opus" ] } ], "probes_accepted": [], "embedded": [ { "at": 44, "id": "ogg" }, { "at": 81, "id": "ogg" } ], "embedded_capped": false, "measures": { "scanned": 120, "distinct_bytes": 35, "zero_bytes": 56, "chi_square": 7013, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/id3-version-flac.bin", "origin": "gen", "what": "an ID3v2 version not allowed, with FLAC after it: neither", "sha256": "e6cf3f9bd6fe76a12c9d8b27381aaa083e896769b9ce62a530d5675076fad1b8", "result": { "format": "wai.identify/1", "size": 74, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [ { "at": 10, "id": "flac" } ], "embedded_capped": false, "measures": { "scanned": 74, "distinct_bytes": 39, "zero_bytes": 28, "chi_square": 2880, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/id3-revision-flac.bin", "origin": "gen", "what": "an ID3v2 revision not allowed, with FLAC after it: neither", "sha256": "10772e1454eeaf619c2b1d2d4a9ac824f2bd1753ea3dba8b5585d36616643fe1", "result": { "format": "wai.identify/1", "size": 74, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [ { "at": 10, "id": "flac" } ], "embedded_capped": false, "measures": { "scanned": 74, "distinct_bytes": 39, "zero_bytes": 27, "chi_square": 2714, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/id3-flag1-flac.bin", "origin": "gen", "what": "a flag beside the footer's: no footer", "sha256": "f5484684533d8d4647b00b446a51da5695b615ffc4bb9e16e9f8f650749ed474", "result": { "format": "wai.identify/1", "size": 74, "verdict": "signature_only", "candidates": [ { "id": "flac", "kind": "audio", "strength": "signature", "evidence": [ { "at": 10, "len": 4, "is": "fLaC" }, { "at": 18, "len": 34, "is": "streaminfo" } ], "walked_to": 70, "stopped": { "at": 70, "why": "overrun" }, "facts": { "sample_rate": 48000, "channels": 1, "bits_per_sample": 16, "samples": 9600 }, "tracks": [], "capabilities": [ "wai.audio.flac" ] } ], "probes_accepted": [], "embedded": [ { "at": 10, "id": "flac" } ], "embedded_capped": false, "measures": { "scanned": 74, "distinct_bytes": 38, "zero_bytes": 27, "chi_square": 2721, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/id3-high-size.bin", "origin": "gen", "what": "a tag of 2 MiB declared: the FLAC within it is not read", "sha256": "073953d628cbb4a86026760fe312827e9db217f62cce5f7ddd755f01f929e024", "result": { "format": "wai.identify/1", "size": 96, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [ { "at": 32, "id": "flac" } ], "embedded_capped": false, "measures": { "scanned": 96, "distinct_bytes": 39, "zero_bytes": 48, "chi_square": 6261, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/id3-exact.bin", "origin": "gen", "what": "a tag of exactly ten bytes and nothing else", "sha256": "364c131c17af7ed4512160a1a04b955300d50d1da18aab0e343b3b2f0192e379", "result": { "format": "wai.identify/1", "size": 10, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 10, "distinct_bytes": 5, "zero_bytes": 6, "chi_square": 1014, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/flac-variable.bin", "origin": "gen", "what": "a frame of variable block size after the blocks", "sha256": "e52eac38ad02c06583a73952f343d667193302b32794e40c3cb31c3df26ed4dd", "result": { "format": "wai.identify/1", "size": 8320, "verdict": "identified", "candidates": [ { "id": "flac", "kind": "audio", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "fLaC" }, { "at": 8, "len": 34, "is": "streaminfo" }, { "at": 8256, "len": 2, "is": "frame_sync" } ], "walked_to": 8256, "stopped": null, "facts": { "sample_rate": 48000, "channels": 1, "bits_per_sample": 16, "samples": 9600 }, "tracks": [], "capabilities": [ "wai.audio.flac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 8320, "distinct_bytes": 75, "zero_bytes": 8218, "chi_square": 2069701, "windows": 2, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/riff-twelve.bin", "origin": "gen", "what": "a RIFF of exactly twelve bytes", "sha256": "1fe5a351bf0314c8a1840b023fd1e4cab3f0f123468940c241bd7bf20e989ab8", "result": { "format": "wai.identify/1", "size": 12, "verdict": "signature_only", "candidates": [ { "id": "wave", "kind": "audio", "strength": "signature", "evidence": [ { "at": 8, "len": 4, "is": "form:WAVE" } ], "walked_to": 12, "stopped": null, "facts": { "form": "WAVE", "chunks": [] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 12, "distinct_bytes": 9, "zero_bytes": 3, "chi_square": 414, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/riff-17.bin", "origin": "gen", "what": "17 chunk types: 16 named", "sha256": "d2ee06bc517f3d78c4d2d38b241053612e48e63d1f350dc541a749e81c1119df", "result": { "format": "wai.identify/1", "size": 148, "verdict": "identified", "candidates": [ { "id": "avi", "kind": "container", "strength": "structure", "evidence": [ { "at": 8, "len": 4, "is": "form:AVI " }, { "at": 12, "len": 4, "is": "chunk:chka" }, { "at": 20, "len": 4, "is": "chunk:chkb" }, { "at": 28, "len": 4, "is": "chunk:chkc" }, { "at": 36, "len": 4, "is": "chunk:chkd" }, { "at": 44, "len": 4, "is": "chunk:chke" }, { "at": 52, "len": 4, "is": "chunk:chkf" }, { "at": 60, "len": 4, "is": "chunk:chkg" } ], "walked_to": 148, "stopped": null, "facts": { "form": "AVI ", "chunks": [ "chka", "chkb", "chkc", "chkd", "chke", "chkf", "chkg", "chkh", "chki", "chkj", "chkk", "chkl", "chkm", "chkn", "chko", "chkp" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 148, "distinct_bytes": 25, "zero_bytes": 71, "chi_square": 10299, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/riff-webp-vp8l.bin", "origin": "gen", "what": "a lossless frame without its signature byte, and one too short", "sha256": "7ac4ed57fa6ab4e8074462ea6356cfde30a746574a01454cd642f908e0b400fb", "result": { "format": "wai.identify/1", "size": 36, "verdict": "identified", "candidates": [ { "id": "webp", "kind": "image", "strength": "structure", "evidence": [ { "at": 8, "len": 4, "is": "form:WEBP" }, { "at": 12, "len": 4, "is": "chunk:VP8L" }, { "at": 26, "len": 4, "is": "chunk:VP8L" } ], "walked_to": 36, "stopped": null, "facts": { "form": "WEBP", "chunks": [ "VP8L" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 36, "distinct_bytes": 19, "zero_bytes": 10, "chi_square": 988, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/riff-wave-vp8x.bin", "origin": "gen", "what": "a wave holding a chunk a WebP would read", "sha256": "95a603e682d4b1a1c44c275f972a4c6ea4e3bc0c521109c4a54308b769048545", "result": { "format": "wai.identify/1", "size": 30, "verdict": "identified", "candidates": [ { "id": "wave", "kind": "audio", "strength": "structure", "evidence": [ { "at": 8, "len": 4, "is": "form:WAVE" }, { "at": 12, "len": 4, "is": "chunk:VP8X" } ], "walked_to": 30, "stopped": null, "facts": { "form": "WAVE", "chunks": [ "VP8X" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 30, "distinct_bytes": 13, "zero_bytes": 16, "chi_square": 2308, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mp3-32k.bin", "origin": "gen", "what": "32 kHz", "sha256": "6d36cd65733d51166dd870b162618ad70c92b7ef89d1aca8547d6a03d88fc627", "result": { "format": "wai.identify/1", "size": 432, "verdict": "identified", "candidates": [ { "id": "mpeg-audio", "kind": "audio", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "frame_header" } ], "walked_to": 432, "stopped": null, "facts": { "version": "1", "layer": 3, "bitrate_kbps": 32, "sample_rate": 32000, "channels": 2, "frames_read": 3 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 432, "distinct_bytes": 4, "zero_bytes": 423, "chi_square": 105616, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mp3-one-more.bin", "origin": "gen", "what": "one byte after the frames", "sha256": "cb4262def4477a7961de78fdf27d97e255707d2bdc71c854d68e0eea12e4e1b2", "result": { "format": "wai.identify/1", "size": 1252, "verdict": "identified", "candidates": [ { "id": "mpeg-audio", "kind": "audio", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "frame_header" } ], "walked_to": 1251, "stopped": { "at": 1251, "why": "overrun" }, "facts": { "version": "1", "layer": 3, "bitrate_kbps": 128, "sample_rate": 44100, "channels": 2, "frames_read": 3 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1252, "distinct_bytes": 4, "zero_bytes": 1242, "chi_square": 314167, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/mp3-four-more.bin", "origin": "gen", "what": "four bytes after the frames that are no frame", "sha256": "5296b7adb20381d033dc72a9e8b2e7b74c1f0fc76c715680fb10f785c6a36dab", "result": { "format": "wai.identify/1", "size": 1255, "verdict": "identified", "candidates": [ { "id": "mpeg-audio", "kind": "audio", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "frame_header" } ], "walked_to": 1251, "stopped": { "at": 1251, "why": "invalid" }, "facts": { "version": "1", "layer": 3, "bitrate_kbps": 128, "sample_rate": 44100, "channels": 2, "frames_read": 3 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1255, "distinct_bytes": 8, "zero_bytes": 1242, "chi_square": 313409, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/adts-junk.bin", "origin": "gen", "what": "seven bytes after the frames, the first 0xFF and the next no sync", "sha256": "92656d6dd35e9be3e61099c77faf83018dc2c12271133b21fa1dd197049e3284", "result": { "format": "wai.identify/1", "size": 34, "verdict": "identified", "candidates": [ { "id": "adts", "kind": "audio", "strength": "structure", "evidence": [ { "at": 0, "len": 7, "is": "frame_header" } ], "walked_to": 27, "stopped": { "at": 27, "why": "invalid" }, "facts": { "audio_object_type": 2, "sample_rate": 48000, "channel_configuration": 2, "frames_read": 3 }, "tracks": [], "capabilities": [ "wai.audio.aac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 34, "distinct_bytes": 8, "zero_bytes": 7, "chi_square": 1125, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/adts-rate13.bin", "origin": "gen", "what": "rate index 13: not one", "sha256": "941c6fe00ff9c622a9fe723244a1726cbd3308d806c02a49832554db51dc7cf3", "result": { "format": "wai.identify/1", "size": 8, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 8, "distinct_bytes": 8, "zero_bytes": 1, "chi_square": 248, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/png-letters.bin", "origin": "gen", "what": "a chunk type of the letters at each end of the ranges", "sha256": "0656cced67a941decc9b5676f6c3b855484ac897322cb1cac9491d83773d4bf5", "result": { "format": "wai.identify/1", "size": 57, "verdict": "identified", "candidates": [ { "id": "png", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 8, "is": "signature" }, { "at": 8, "len": 25, "is": "ihdr" }, { "at": 45, "len": 12, "is": "iend" } ], "walked_to": 57, "stopped": null, "facts": { "width": 1, "height": 2, "bit_depth": 16, "colour_type": 2, "interlace": 1, "chunks_read": 3 }, "tracks": [], "capabilities": [ "wai.image.png" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 57, "distinct_bytes": 32, "zero_bytes": 19, "chi_square": 1797, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/png-bracket.bin", "origin": "gen", "what": "a chunk type with [: invalid", "sha256": "ad16733ecb709820360ccbb0661f92970206adfcf05381eaaa0bdefc31651f2f", "result": { "format": "wai.identify/1", "size": 45, "verdict": "identified", "candidates": [ { "id": "png", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 8, "is": "signature" }, { "at": 8, "len": 25, "is": "ihdr" } ], "walked_to": 33, "stopped": { "at": 33, "why": "invalid" }, "facts": { "width": 1, "height": 2, "bit_depth": 16, "colour_type": 2, "interlace": 1, "chunks_read": 1 }, "tracks": [], "capabilities": [ "wai.image.png" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 45, "distinct_bytes": 25, "zero_bytes": 15, "chi_square": 1485, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/png-brace.bin", "origin": "gen", "what": "a chunk type with {: invalid", "sha256": "e6cf222fc40a018b4df0f000abd1413fa6bfb12fdc09df5063c8acd22b09b74d", "result": { "format": "wai.identify/1", "size": 45, "verdict": "identified", "candidates": [ { "id": "png", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 8, "is": "signature" }, { "at": 8, "len": 25, "is": "ihdr" } ], "walked_to": 33, "stopped": { "at": 33, "why": "invalid" }, "facts": { "width": 1, "height": 2, "bit_depth": 16, "colour_type": 2, "interlace": 1, "chunks_read": 1 }, "tracks": [], "capabilities": [ "wai.image.png" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 45, "distinct_bytes": 24, "zero_bytes": 15, "chi_square": 1496, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/jpeg-app15.bin", "origin": "gen", "what": "APP15, a JFIF prefix filling its segment, and 0xF0, no application segment", "sha256": "76b4e2e818a1768af0611e0ec662b8ef4fcf40542f722c47c282bec8d88138ce", "result": { "format": "wai.identify/1", "size": 44, "verdict": "identified", "candidates": [ { "id": "jpeg", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 2, "is": "soi" }, { "at": 21, "len": 19, "is": "sof" }, { "at": 40, "len": 2, "is": "sos" } ], "walked_to": 40, "stopped": null, "facts": { "process": "baseline", "precision": 8, "height": 16, "width": 32, "components": 3, "applications": [ "jfif" ] }, "tracks": [], "capabilities": [ "wai.image.jpeg" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 44, "distinct_bytes": 23, "zero_bytes": 10, "chi_square": 968, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/gif-table.bin", "origin": "gen", "what": "a global table of twelve bytes, and bytes after the trailer", "sha256": "8d0b072b61c5a2028693c6526f64c01ae7e4bd8673e385a9218ec05456fec211", "result": { "format": "wai.identify/1", "size": 29, "verdict": "identified", "candidates": [ { "id": "gif", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 6, "is": "signature:GIF89a" }, { "at": 25, "len": 1, "is": "trailer" } ], "walked_to": 26, "stopped": null, "facts": { "width": 1, "height": 1, "frames_read": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 29, "distinct_bytes": 11, "zero_bytes": 18, "chi_square": 2945, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/gif-flag.bin", "origin": "gen", "what": "a table size with no table flag", "sha256": "08cc9fb7ad8f88e545bb38b5e3bd9e651cf7ba607078a83edb6d6c133fef99e8", "result": { "format": "wai.identify/1", "size": 14, "verdict": "identified", "candidates": [ { "id": "gif", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 6, "is": "signature:GIF89a" }, { "at": 13, "len": 1, "is": "trailer" } ], "walked_to": 14, "stopped": null, "facts": { "width": 1, "height": 1, "frames_read": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 14, "distinct_bytes": 9, "zero_bytes": 4, "chi_square": 571, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/gif-local-flags.bin", "origin": "gen", "what": "a local table size with no flag, and a flag with size bits 8 above it", "sha256": "786bc08f25c9fef925c4f6630e0a5f6dfc17af6e32591ebb4083ef0dd29c085e", "result": { "format": "wai.identify/1", "size": 44, "verdict": "identified", "candidates": [ { "id": "gif", "kind": "image", "strength": "structure", "evidence": [ { "at": 0, "len": 6, "is": "signature:GIF89a" }, { "at": 13, "len": 10, "is": "image" }, { "at": 43, "len": 1, "is": "trailer" } ], "walked_to": 44, "stopped": null, "facts": { "width": 1, "height": 1, "frames_read": 2 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 44, "distinct_bytes": 12, "zero_bytes": 25, "chi_square": 3970, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ivf-twelve.bin", "origin": "gen", "what": "an IVF of exactly twelve bytes", "sha256": "f4156264d2977bd8cccb6a32d44c52f64554dcd511532cdea472550a5356ef74", "result": { "format": "wai.identify/1", "size": 12, "verdict": "signature_only", "candidates": [ { "id": "ivf", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "dkif" } ], "walked_to": 12, "stopped": { "at": 12, "why": "overrun" }, "facts": { "frames_read": 0 }, "tracks": [ { "track": null, "media": "video", "stated": "VP90", "codec": "vp9", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.vp9" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 12, "distinct_bytes": 10, "zero_bytes": 3, "chi_square": 372, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ivf-one.bin", "origin": "gen", "what": "one frame", "sha256": "65a4457cad82ba36d76b916f9dcc448ce95f87a4c644a017a6b936351107b601", "result": { "format": "wai.identify/1", "size": 46, "verdict": "identified", "candidates": [ { "id": "ivf", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "dkif" } ], "walked_to": 46, "stopped": null, "facts": { "frames_read": 1 }, "tracks": [ { "track": null, "media": "video", "stated": "VP90", "codec": "vp9", "width": 2, "height": 2, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.vp9" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 46, "distinct_bytes": 12, "zero_bytes": 32, "chi_square": 5775, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/y4m-9bit.bin", "origin": "gen", "what": "nine bits: two bytes a sample", "sha256": "25cb3953cf72180990b7d86ac3cf4924edf60966d058c9e6df83e04edbfee4e6", "result": { "format": "wai.identify/1", "size": 38, "verdict": "identified", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 38, "stopped": null, "facts": { "width": 2, "height": 2, "colour": "monop9", "frames_read": 1 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 38, "distinct_bytes": 23, "zero_bytes": 8, "chi_square": 730, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/y4m-256.bin", "origin": "gen", "what": "a line end at exactly byte 256", "sha256": "9ff298fa16eb59001dd314fc59c8350db4bb880e59efdae5c4b62bdcc8b64132", "result": { "format": "wai.identify/1", "size": 263, "verdict": "signature_only", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "signature", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 0, "stopped": { "at": 0, "why": "invalid" }, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 263, "distinct_bytes": 16, "zero_bytes": 0, "chi_square": 57245, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/y4m-256-only.bin", "origin": "gen", "what": "256 bytes with no line end", "sha256": "faf48e7197850fcb0c6ec47da63dcafe0bf43e06819b8b277cf23c411ccb390c", "result": { "format": "wai.identify/1", "size": 256, "verdict": "signature_only", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "signature", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 0, "stopped": { "at": 0, "why": "invalid" }, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 256, "distinct_bytes": 12, "zero_bytes": 0, "chi_square": 58812, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/y4m-five.bin", "origin": "gen", "what": "five bytes that are no frame line", "sha256": "4477d636957f199820bf81e58fa830b3bb4f68c243381bac8260cc5ace9ce4d0", "result": { "format": "wai.identify/1", "size": 27, "verdict": "signature_only", "candidates": [ { "id": "y4m", "kind": "elementary", "strength": "signature", "evidence": [ { "at": 0, "len": 10, "is": "signature" } ], "walked_to": 22, "stopped": { "at": 22, "why": "invalid" }, "facts": { "width": 1, "height": 1, "colour": "mono", "frames_read": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 27, "distinct_bytes": 19, "zero_bytes": 0, "chi_square": 513, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/flv-nine.bin", "origin": "gen", "what": "nine bytes, a data offset too small: invalid", "sha256": "cd2b79cd442868601fe3212ada52ff81c7a13676b2c82534662a97f0c3fb8f98", "result": { "format": "wai.identify/1", "size": 9, "verdict": "signature_only", "candidates": [ { "id": "flv", "kind": "container", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": 0, "stopped": { "at": 0, "why": "invalid" }, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 9, "distinct_bytes": 7, "zero_bytes": 3, "chi_square": 417, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/flv-one-byte.bin", "origin": "gen", "what": "a video tag of one byte", "sha256": "0291bf7ac96f8f178ede78da20763ace07ae98dcf12b2b76644be6b8e799fbff", "result": { "format": "wai.identify/1", "size": 29, "verdict": "identified", "candidates": [ { "id": "flv", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "signature" } ], "walked_to": 29, "stopped": null, "facts": { "tags_read": 1 }, "tracks": [ { "track": null, "media": "video", "stated": "codec_id:7", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": null } ], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 29, "distinct_bytes": 9, "zero_bytes": 19, "chi_square": 3281, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/av1-level7.bin", "origin": "gen", "what": "level 7, no tier bit; a padding OBU", "sha256": "352051bed602fd08536b3a6d8d631c28597a2dfb324ec6ecad36fdbf3e5ee705", "result": { "format": "wai.identify/1", "size": 15, "verdict": "identified", "candidates": [ { "id": "av1-obu", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 0, "len": 8, "is": "sequence_header" } ], "walked_to": 15, "stopped": null, "facts": { "profile": 0, "level": 7, "width": 6, "height": 6, "units_read": 3 }, "tracks": [], "capabilities": [ "wai.video.av1" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 15, "distinct_bytes": 10, "zero_bytes": 5, "chi_square": 616, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/av1-forbidden.bin", "origin": "gen", "what": "an OBU with its forbidden bit set", "sha256": "af583f71ca072660bdd37aede454e45999b6d6df767fbd13a944af1de88c6158", "result": { "format": "wai.identify/1", "size": 12, "verdict": "identified", "candidates": [ { "id": "av1-obu", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 0, "len": 7, "is": "sequence_header" } ], "walked_to": 10, "stopped": { "at": 10, "why": "invalid" }, "facts": { "profile": 0, "level": 4, "width": 256, "height": 128, "units_read": 2 }, "tracks": [], "capabilities": [ "wai.video.av1" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 12, "distinct_bytes": 11, "zero_bytes": 1, "chi_square": 286, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/av1-leb8.bin", "origin": "gen", "what": "a size of eight bytes: read, and past the file", "sha256": "9cab4520d2ce9ec602595d572feca6f220cfc60167696c37bf6174cfbc6c615b", "result": { "format": "wai.identify/1", "size": 19, "verdict": "identified", "candidates": [ { "id": "av1-obu", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 0, "len": 7, "is": "sequence_header" } ], "walked_to": 10, "stopped": { "at": 10, "why": "overrun" }, "facts": { "profile": 0, "level": 4, "width": 256, "height": 128, "units_read": 2 }, "tracks": [], "capabilities": [ "wai.video.av1" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 19, "distinct_bytes": 10, "zero_bytes": 0, "chi_square": 910, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/hls-none.bin", "origin": "gen", "what": "only a key of no method", "sha256": "128578ae3419d71d8d98631a8c8b1da61b2a0ad6adeea17eb720f4442c699c36", "result": { "format": "wai.identify/1", "size": 44, "verdict": "identified", "candidates": [ { "id": "hls", "kind": "playlist", "strength": "structure", "evidence": [ { "at": 0, "len": 7, "is": "extm3u" } ], "walked_to": null, "stopped": null, "facts": { "playlist": "media", "variants": 0, "segments": 1, "maps": 0, "ended": false, "version": null, "key_method": null, "codecs": null }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 44, "distinct_bytes": 22, "zero_bytes": 0, "chi_square": 712, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/dash-tight.bin", "origin": "gen", "what": "a declaration ending right before the element", "sha256": "3c027cf63f6ca52a4b1bf809cbe23147cbc6615d09e0e6ec4476db313995eab1", "result": { "format": "wai.identify/1", "size": 51, "verdict": "identified", "candidates": [ { "id": "dash", "kind": "playlist", "strength": "structure", "evidence": [ { "at": 7, "len": 4, "is": "mpd" }, { "at": 19, "len": 29, "is": "namespace" } ], "walked_to": null, "stopped": null, "facts": { "type": null, "periods": 0, "adaptation_sets": 0, "representations": 0, "content_protection": 0, "codecs": [] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 51, "distinct_bytes": 28, "zero_bytes": 0, "chi_square": 566, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/dash-four.bin", "origin": "gen", "what": "the element's name and nothing after it", "sha256": "021534a4d804a25f63379d54196a1cb48191b94d2f98966eec2890480eb4e39e", "result": { "format": "wai.identify/1", "size": 4, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 4, "distinct_bytes": 4, "zero_bytes": 0, "chi_square": 252, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/dash-five.bin", "origin": "gen", "what": "the element's name and its close", "sha256": "bd309076adb664a71426cb20b0a4cd33e48467c0025f22fff580be6392212ee9", "result": { "format": "wai.identify/1", "size": 5, "verdict": "signature_only", "candidates": [ { "id": "dash", "kind": "playlist", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "mpd" } ], "walked_to": null, "stopped": null, "facts": { "type": null, "periods": 0, "adaptation_sets": 0, "representations": 0, "content_protection": 0, "codecs": [] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 5, "distinct_bytes": 5, "zero_bytes": 0, "chi_square": 251, "windows": 0, "uniform_windows": 0, "text": true, "periods": [] } } }, { "file": "gen/dash-17.bin", "origin": "gen", "what": "17 codecs: 16 listed", "sha256": "51bdc5503efb587c08b20db6f566f6dcf7a540afa0958f244ca7f5f3138e55b7", "result": { "format": "wai.identify/1", "size": 511, "verdict": "signature_only", "candidates": [ { "id": "dash", "kind": "playlist", "strength": "signature", "evidence": [ { "at": 0, "len": 4, "is": "mpd" } ], "walked_to": null, "stopped": null, "facts": { "type": null, "periods": 0, "adaptation_sets": 0, "representations": 17, "content_protection": 0, "codecs": [ "c0", "c1", "c2", "c3", "c4", "c5", "c6", "c7", "c8", "c9", "c10", "c11", "c12", "c13", "c14", "c15" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 511, "distinct_bytes": 31, "zero_bytes": 0, "chi_square": 7746, "windows": 0, "uniform_windows": 0, "text": true, "periods": [ { "lag": 58, "z": 43 }, { "lag": 60, "z": 26 }, { "lag": 87, "z": 39 } ] } } }, { "file": "gen/avc-three-byte.bin", "origin": "gen", "what": "three-byte start codes, the first at byte 0", "sha256": "17fe3f3387ac796f9e6777af1529c76c5648bab689cffa4f0a1b3f50010cc8ee", "result": { "format": "wai.identify/1", "size": 26, "verdict": "identified", "candidates": [ { "id": "avc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 3, "len": 10, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 3, "profile_idc": 77, "constraint_flags": 0, "level_idc": 30, "chroma_format_idc": 1, "width": 252, "height": 248 }, "tracks": [], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 26, "distinct_bytes": 17, "zero_bytes": 7, "chi_square": 722, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/annexb-02.bin", "origin": "gen", "what": "two zeros and a 2: no start", "sha256": "6290dae089b009aa455856849d87d5099a674b1a153834971267a7cf2f425639", "result": { "format": "wai.identify/1", "size": 13, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 13, "distinct_bytes": 10, "zero_bytes": 3, "chi_square": 400, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-end-start.bin", "origin": "gen", "what": "a start code at the very end", "sha256": "eadd85358c52021a87b4c9118cc69d66621c1fa86b54357f93391de4dae950a8", "result": { "format": "wai.identify/1", "size": 29, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 29, "distinct_bytes": 14, "zero_bytes": 12, "chi_square": 1515, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-adjacent.bin", "origin": "gen", "what": "two start codes back to back: an empty unit", "sha256": "061a2f04393ced5fd81ca525cfd5dce27ef7f718e2625d4cc1db47d356ae8c9a", "result": { "format": "wai.identify/1", "size": 30, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 30, "distinct_bytes": 16, "zero_bytes": 11, "chi_square": 1284, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-type21.bin", "origin": "gen", "what": "type 21", "sha256": "e08e1a959b7ebb4344fcf5f1e9aea144dad087e89c11bf6e12ff6d3bf3459fe3", "result": { "format": "wai.identify/1", "size": 32, "verdict": "identified", "candidates": [ { "id": "avc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 4, "len": 10, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 4, "profile_idc": 77, "constraint_flags": 0, "level_idc": 30, "chroma_format_idc": 1, "width": 252, "height": 248 }, "tracks": [], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 32, "distinct_bytes": 15, "zero_bytes": 13, "chi_square": 1600, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-slice-first.bin", "origin": "gen", "what": "a non-IDR slice before the picture parameter set: no reading", "sha256": "d12ee5d01e1d8460b2efc6d04dba952ba4822d7a6775c21a7f9e046d3812885f", "result": { "format": "wai.identify/1", "size": 32, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 32, "distinct_bytes": 15, "zero_bytes": 13, "chi_square": 1600, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-escaped.bin", "origin": "gen", "what": "a parameter set with emulation prevention", "sha256": "5dce1c3777f1a04afeba873529541840de935d2e980799f8655c77d12e240462", "result": { "format": "wai.identify/1", "size": 27, "verdict": "identified", "candidates": [ { "id": "avc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 4, "len": 11, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 3, "profile_idc": 66, "constraint_flags": 0, "level_idc": 0, "chroma_format_idc": 1, "width": 320, "height": 240 }, "tracks": [], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 27, "distinct_bytes": 14, "zero_bytes": 12, "chi_square": 1537, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-ue31.bin", "origin": "gen", "what": "a code of 31 leading zeros: read", "sha256": "a2fe9e79f2b8b36835dbcb45930f1ba29b4deaaf1079b4d202f0ef6ac9b43f69", "result": { "format": "wai.identify/1", "size": 30, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 30, "distinct_bytes": 12, "zero_bytes": 16, "chi_square": 2376, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-ue32.bin", "origin": "gen", "what": "a code of 32 leading zeros: no reading", "sha256": "4636d6b9c9ac3b3b52737e951bb957118386d8f49d025211533c2a2c5d86bc35", "result": { "format": "wai.identify/1", "size": 30, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 30, "distinct_bytes": 13, "zero_bytes": 16, "chi_square": 2325, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-chroma4-full.bin", "origin": "gen", "what": "chroma format 4 with every field after it: no reading", "sha256": "c7062c29165867fe430ce437b8e450d43723ada5b873153a9498916eee77bfd0", "result": { "format": "wai.identify/1", "size": 24, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 24, "distinct_bytes": 13, "zero_bytes": 10, "chi_square": 1256, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-list-64.bin", "origin": "gen", "what": "an 8x8 list of all 64 entries", "sha256": "c0490b42f44ff2d738aca9a9d24762f1267806beac77d9f6fdee504e10acdac8", "result": { "format": "wai.identify/1", "size": 32, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 32, "distinct_bytes": 14, "zero_bytes": 10, "chi_square": 1440, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-list-one.bin", "origin": "gen", "what": "a list whose next entry reaches 1, then 0", "sha256": "80876266e0bcc0976dbd6c66813a29c203c484d0c323d8de2a823841a548fcd6", "result": { "format": "wai.identify/1", "size": 26, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 26, "distinct_bytes": 14, "zero_bytes": 10, "chi_square": 1194, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-poc-255.bin", "origin": "gen", "what": "255 picture order offsets: read", "sha256": "020d147b6993e6d1e36bf556482f8bf7fbc4800fe8003a554695767abe58d146", "result": { "format": "wai.identify/1", "size": 57, "verdict": "identified", "candidates": [ { "id": "avc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 4, "len": 41, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 3, "profile_idc": 77, "constraint_flags": 0, "level_idc": 30, "chroma_format_idc": 1, "width": 16, "height": 16 }, "tracks": [], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 57, "distinct_bytes": 15, "zero_bytes": 11, "chi_square": 4896, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-poc-256-full.bin", "origin": "gen", "what": "256 picture order offsets with every field after: no reading", "sha256": "f8ff4edb0bed49d2487982ee970f74fef5319f130a73d5259e34353077d2f675", "result": { "format": "wai.identify/1", "size": 57, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 57, "distinct_bytes": 14, "zero_bytes": 11, "chi_square": 5175, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-444-crop.bin", "origin": "gen", "what": "4:4:4 in one plane, a crop in luma samples", "sha256": "044364803f85f257cb60b37423a1ec7414cfa720c920e6c507f4e8b86fb971fc", "result": { "format": "wai.identify/1", "size": 26, "verdict": "identified", "candidates": [ { "id": "avc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 4, "len": 10, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 3, "profile_idc": 100, "constraint_flags": 0, "level_idc": 40, "chroma_format_idc": 3, "width": 30, "height": 30 }, "tracks": [], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 26, "distinct_bytes": 15, "zero_bytes": 10, "chi_square": 1175, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-width-0.bin", "origin": "gen", "what": "a crop to a width of exactly 0", "sha256": "9fafe9bbaf9912b175506085ddf00c5dd8dc05efccb9e8153cd781a6f43af928", "result": { "format": "wai.identify/1", "size": 24, "verdict": "identified", "candidates": [ { "id": "avc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 4, "len": 8, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 3, "profile_idc": 77, "constraint_flags": 0, "level_idc": 30, "chroma_format_idc": 1, "width": 0, "height": 16 }, "tracks": [], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 24, "distinct_bytes": 13, "zero_bytes": 10, "chi_square": 1256, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-height-0.bin", "origin": "gen", "what": "a crop to a height of exactly 0", "sha256": "b9ff86366784de3d3871d5c5141497ccd90d6eb2379f90f8b7912f9366de654f", "result": { "format": "wai.identify/1", "size": 24, "verdict": "identified", "candidates": [ { "id": "avc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 4, "len": 8, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 3, "profile_idc": 77, "constraint_flags": 0, "level_idc": 30, "chroma_format_idc": 1, "width": 16, "height": 0 }, "tracks": [], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 24, "distinct_bytes": 13, "zero_bytes": 10, "chi_square": 1256, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/hevc-edges.bin", "origin": "gen", "what": "H.265 types 9, 16, 21 and 40: legal", "sha256": "344d3729c34425024f9372cde284312afd7dac6a02f30f07d4fc5cc6cca2a1b1", "result": { "format": "wai.identify/1", "size": 49, "verdict": "identified", "candidates": [ { "id": "hevc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 11, "len": 3, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 7, "probe_refused": { "wai.video.hevc": "truncated" } }, "tracks": [], "capabilities": [ "wai.video.hevc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 49, "distinct_bytes": 10, "zero_bytes": 21, "chi_square": 3571, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/hevc-type10.bin", "origin": "gen", "what": "H.265 type 10: no reading", "sha256": "19b04df92d98546ef396fd46bdf031a129613ff9d094554ea314f376193c358b", "result": { "format": "wai.identify/1", "size": 28, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 28, "distinct_bytes": 7, "zero_bytes": 12, "chi_square": 2056, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/hevc-type22.bin", "origin": "gen", "what": "H.265 type 22: no reading", "sha256": "0b3ee43563a3b191c58dc25ba09e36d92e0f430f2971a68b52b5e3ee59e36109", "result": { "format": "wai.identify/1", "size": 28, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 28, "distinct_bytes": 7, "zero_bytes": 12, "chi_square": 2056, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/hevc-type41.bin", "origin": "gen", "what": "H.265 type 41: no reading", "sha256": "853a14f482c89150162b90cfc8c94389097c9fb34ee9ecccb91b805420552388", "result": { "format": "wai.identify/1", "size": 28, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 28, "distinct_bytes": 7, "zero_bytes": 12, "chi_square": 2056, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/hevc-9-early.bin", "origin": "gen", "what": "a coded picture before the picture parameter set: no reading", "sha256": "fd062c29c99717e923b8d8b087aa48e332715c6639d7c3919e838cebf7dc14c9", "result": { "format": "wai.identify/1", "size": 28, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 28, "distinct_bytes": 7, "zero_bytes": 12, "chi_square": 2056, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/hevc-16-early.bin", "origin": "gen", "what": "a coded picture before the picture parameter set: no reading", "sha256": "88763b413681fffb2643043f3e5dc48d75bd61e1fdbccc49232e5d0733e94208", "result": { "format": "wai.identify/1", "size": 28, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 28, "distinct_bytes": 7, "zero_bytes": 12, "chi_square": 2056, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/hevc-21-early.bin", "origin": "gen", "what": "a coded picture before the picture parameter set: no reading", "sha256": "c545a652eeff4fdede1b3ee0e078d42788a82d253cfc6bf1f2d5c896cc4097cb", "result": { "format": "wai.identify/1", "size": 28, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 28, "distinct_bytes": 7, "zero_bytes": 12, "chi_square": 2056, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/hevc-layer.bin", "origin": "gen", "what": "H.265 headers with a layer identifier's high bit: legal", "sha256": "3d21541ab6765fb33b4902a18b5432321229c4d2e7cc76648cd3a425e2e26646", "result": { "format": "wai.identify/1", "size": 28, "verdict": "identified", "candidates": [ { "id": "hevc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 11, "len": 3, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 4, "probe_refused": { "wai.video.hevc": "truncated" } }, "tracks": [], "capabilities": [ "wai.video.hevc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 28, "distinct_bytes": 7, "zero_bytes": 12, "chi_square": 2056, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/hevc-two-byte.bin", "origin": "gen", "what": "H.265 units of two bytes each", "sha256": "a3f0cca4607221b8f4bdb6efec6e459d947bad72d6ae207ade5cca0c362eaef0", "result": { "format": "wai.identify/1", "size": 24, "verdict": "identified", "candidates": [ { "id": "hevc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 10, "len": 2, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 4, "probe_refused": { "wai.video.hevc": "truncated" } }, "tracks": [], "capabilities": [ "wai.video.hevc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 24, "distinct_bytes": 6, "zero_bytes": 12, "chi_square": 2237, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/vvc-two-byte.bin", "origin": "gen", "what": "H.266 units of two bytes each", "sha256": "71f82508440e7e831a2b1a4e57b37054214583149452126edf4896c9587f713b", "result": { "format": "wai.identify/1", "size": 18, "verdict": "identified", "candidates": [ { "id": "vvc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 4, "len": 2, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 3, "probe_refused": { "wai.video.vvc": "truncated" } }, "tracks": [], "capabilities": [ "wai.video.vvc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 18, "distinct_bytes": 5, "zero_bytes": 12, "chi_square": 2200, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/vvc-type25.bin", "origin": "gen", "what": "H.266 type 25: legal", "sha256": "03702eba0d721945c4602759b4f9b42cd35ea2db86ef3002f9446108bc540c6a", "result": { "format": "wai.identify/1", "size": 24, "verdict": "identified", "candidates": [ { "id": "vvc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 4, "len": 2, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 4, "probe_refused": { "wai.video.vvc": "truncated" } }, "tracks": [], "capabilities": [ "wai.video.vvc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 24, "distinct_bytes": 6, "zero_bytes": 16, "chi_square": 2920, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/vvc-10-early.bin", "origin": "gen", "what": "an H.266 coded picture of type 10 before the picture parameter set: no reading", "sha256": "0af30d8871bc6ac37452832cdd512f8bd13002d80f437aae17ccfc3c2018c93f", "result": { "format": "wai.identify/1", "size": 18, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 18, "distinct_bytes": 5, "zero_bytes": 12, "chi_square": 2200, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/vvc-11-early.bin", "origin": "gen", "what": "H.266 type 11, not a picture, before the picture parameter set", "sha256": "fdeea58e087e84d5ad146c8181cbbe80c0d428a7fbc6a1f1c62b0e3ab1249957", "result": { "format": "wai.identify/1", "size": 24, "verdict": "identified", "candidates": [ { "id": "vvc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 4, "len": 2, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 4, "probe_refused": { "wai.video.vvc": "truncated" } }, "tracks": [], "capabilities": [ "wai.video.vvc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 24, "distinct_bytes": 6, "zero_bytes": 16, "chi_square": 2920, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/vvc-no-sps.bin", "origin": "gen", "what": "H.266 with no sequence parameter set: no reading", "sha256": "b595777c1547abd27bfcea9cf8d5b413ce316674b62779e02e4f704521d89558", "result": { "format": "wai.identify/1", "size": 12, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 12, "distinct_bytes": 4, "zero_bytes": 8, "chi_square": 1481, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-sei-early.bin", "origin": "gen", "what": "SEI before the picture parameter set", "sha256": "bfa4843f2fbea069093780a1cef070bf77fbdba38cc19fc17a2a2e7605ded913", "result": { "format": "wai.identify/1", "size": 33, "verdict": "identified", "candidates": [ { "id": "avc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 4, "len": 10, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 4, "profile_idc": 77, "constraint_flags": 0, "level_idc": 30, "chroma_format_idc": 1, "width": 252, "height": 248 }, "tracks": [], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 33, "distinct_bytes": 17, "zero_bytes": 13, "chi_square": 1541, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-zero-three.bin", "origin": "gen", "what": "a 3 after one zero: data, level 3", "sha256": "42c6ff1a57e935c262944cf2f8213a5edfd4b298912bcbaff322f4c999b6484c", "result": { "format": "wai.identify/1", "size": 22, "verdict": "identified", "candidates": [ { "id": "avc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 4, "len": 6, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 3, "profile_idc": 66, "constraint_flags": 0, "level_idc": 3, "chroma_format_idc": 1, "width": 16, "height": 16 }, "tracks": [], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 22, "distinct_bytes": 11, "zero_bytes": 10, "chi_square": 1351, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/avc-escape-run.bin", "origin": "gen", "what": "three zeros then 3 in the data: one prevention byte, and the 3 kept", "sha256": "a2a802eab88ffd8d37149434af24d1592322c9460d35015e4c12e1b03accebe7", "result": { "format": "wai.identify/1", "size": 27, "verdict": "identified", "candidates": [ { "id": "avc-annexb", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 4, "len": 11, "is": "nal:sps" } ], "walked_to": null, "stopped": null, "facts": { "units_read": 3, "profile_idc": 66, "constraint_flags": 0, "level_idc": 0, "chroma_format_idc": 1, "width": 16, "height": 16 }, "tracks": [], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 27, "distinct_bytes": 12, "zero_bytes": 13, "chi_square": 1783, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ts-pointer-end.bin", "origin": "gen", "what": "a pointer to the packet's end, then a section in a packet with no start: not read", "sha256": "1b90c727be3eff6a8ce4aa011dad3f317711b37680577a3ff5613e03f5896e5c", "result": { "format": "wai.identify/1", "size": 940, "verdict": "identified", "candidates": [ { "id": "mpeg-ts", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 1, "is": "sync" } ], "walked_to": 940, "stopped": null, "facts": { "packet_size": 188, "packets_read": 5, "scrambled_packets": 0, "programs": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 940, "distinct_bytes": 17, "zero_bytes": 12, "chi_square": 221185, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ts-long-info.bin", "origin": "gen", "what": "a program's information of 257 bytes and a stream's descriptors of 259: lengths of twelve bits", "sha256": "e8cc45c389ec9d7ab3fa56fe71adc98efeff3098ffd685214022386c6135dd87", "result": { "format": "wai.identify/1", "size": 1316, "verdict": "identified", "candidates": [ { "id": "mpeg-ts", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 1, "is": "sync" }, { "at": 5, "len": 16, "is": "pat" }, { "at": 193, "len": 537, "is": "pmt" } ], "walked_to": 1316, "stopped": null, "facts": { "packet_size": 188, "packets_read": 7, "scrambled_packets": 0, "programs": 1 }, "tracks": [ { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": { "scheme": null, "original": null } } ], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1316, "distinct_bytes": 30, "zero_bytes": 530, "chi_square": 158166, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/ts-desc-crc.bin", "origin": "gen", "what": "a stream's descriptors declared to run through the checksum, protection first", "sha256": "2b9ef9b772098880392845d929aee88bba34649db5f694696ab16780015f2781", "result": { "format": "wai.identify/1", "size": 940, "verdict": "identified", "candidates": [ { "id": "mpeg-ts", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 1, "is": "sync" }, { "at": 5, "len": 16, "is": "pat" }, { "at": 193, "len": 23, "is": "pmt" } ], "walked_to": 940, "stopped": null, "facts": { "packet_size": 188, "packets_read": 5, "scrambled_packets": 0, "programs": 1 }, "tracks": [ { "track": 272, "media": "video", "stated": "stream_type:0x1b", "codec": "avc", "width": null, "height": null, "channels": null, "sample_rate": null, "protected": { "scheme": null, "original": null } } ], "capabilities": [ "wai.video.avc" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 940, "distinct_bytes": 26, "zero_bytes": 18, "chi_square": 209604, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/tar.bin", "origin": "gen", "what": "a signature at an offset", "sha256": "f78b8391faa8b578a26b544088996aa6fb9e53646ea70d6014ad8f13f87a7f2a", "result": { "format": "wai.identify/1", "size": 512, "verdict": "signature_only", "candidates": [ { "id": "tar", "kind": "compression", "strength": "signature", "evidence": [ { "at": 257, "len": 5, "is": "signature" } ], "walked_to": null, "stopped": null, "facts": {}, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 512, "distinct_bytes": 6, "zero_bytes": 250, "chi_square": 64022, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/clean-brand.bin", "origin": "gen", "what": "bytes ยง3.4 writes out", "sha256": "6023c53dbb9c4d3aa06d9238b2371649f1f8c3f992ac08d0deb5c6469f169652", "result": { "format": "wai.identify/1", "size": 28, "verdict": "identified", "candidates": [ { "id": "isobmff", "kind": "container", "strength": "structure", "evidence": [ { "at": 4, "len": 4, "is": "box:ftyp" }, { "at": 24, "len": 4, "is": "box:free" } ], "walked_to": 28, "stopped": null, "facts": { "major_brand": "\\xff\\x5c\"\\x01", "compatible_brands": [ "a\\x0abc" ], "boxes": [ "ftyp", "free" ] }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 28, "distinct_bytes": 17, "zero_bytes": 10, "chi_square": 1087, "windows": 0, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/null-packet.bin", "origin": "gen", "what": "6,000 null packets, past the head: limit", "sha256": "99c6629972e06f534a75af35581a2474401a3e060a281ae70d6c2418cb755780", "repeat": 6000, "result": { "format": "wai.identify/1", "size": 1128000, "verdict": "identified", "candidates": [ { "id": "mpeg-ts", "kind": "container", "strength": "structure", "evidence": [ { "at": 0, "len": 1, "is": "sync" } ], "walked_to": 1048476, "stopped": { "at": 1048476, "why": "limit" }, "facts": { "packet_size": 188, "packets_read": 5577, "scrambled_packets": 0, "programs": 0 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1128000, "distinct_bytes": 4, "zero_bytes": 0, "chi_square": 278522042, "windows": 275, "uniform_windows": 0, "text": false, "periods": [ { "lag": 188, "z": 16 } ] } } }, { "file": "gen/block.bin", "origin": "gen", "what": "a noise block 4,100 times, past the scan, repeating at 4,096 bytes", "sha256": "b01ace7bba459865a526d06a4803bd2743cdac15f6690239083c70be05c95e75", "repeat": 4100, "result": { "format": "wai.identify/1", "size": 16793600, "verdict": "unknown", "candidates": [], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 16777216, "distinct_bytes": 256, "zero_bytes": 65536, "chi_square": 1035776, "windows": 4096, "uniform_windows": 4096, "text": false, "periods": [ { "lag": 4096, "z": 7856 } ] } } }, { "file": "gen/mp3-frame.bin", "origin": "gen", "what": "3,000 MPEG audio frames, the head ending inside one: limit", "sha256": "d481143af2d5081394191497363a6e44a0286aa8d2fac5ffc208fe71833c8e99", "repeat": 3000, "result": { "format": "wai.identify/1", "size": 1251000, "verdict": "identified", "candidates": [ { "id": "mpeg-audio", "kind": "audio", "strength": "structure", "evidence": [ { "at": 0, "len": 4, "is": "frame_header" } ], "walked_to": 1048338, "stopped": { "at": 1048338, "why": "limit" }, "facts": { "version": "1", "layer": 3, "bitrate_kbps": 128, "sample_rate": 44100, "channels": 2, "frames_read": 2514 }, "tracks": [], "capabilities": [] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1251000, "distinct_bytes": 4, "zero_bytes": 1242000, "chi_square": 314419100, "windows": 305, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/adts-inside.bin", "origin": "gen", "what": "1,300 ADTS frames, the head ending inside one: limit", "sha256": "a6196bc6c1cb26c844b83f2426acdf91b2d91141167295f127f72188f9b5b8a3", "repeat": 1300, "result": { "format": "wai.identify/1", "size": 1168700, "verdict": "signature_only", "candidates": [ { "id": "adts", "kind": "audio", "strength": "signature", "evidence": [ { "at": 0, "len": 7, "is": "frame_header" } ], "walked_to": 896, "stopped": { "at": 896, "why": "invalid" }, "facts": { "audio_object_type": 2, "sample_rate": 48000, "channel_configuration": 2, "frames_read": 1 }, "tracks": [], "capabilities": [ "wai.audio.aac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1168700, "distinct_bytes": 8, "zero_bytes": 1159600, "chi_square": 293380030, "windows": 285, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/adts-frame.bin", "origin": "gen", "what": "1,100 ADTS frames, the head ending between two: limit", "sha256": "37fb57071a63ab887d73a5ab28107c0efdd9f0a9698091e1003fce9cfe981c44", "repeat": 1100, "result": { "format": "wai.identify/1", "size": 1126400, "verdict": "identified", "candidates": [ { "id": "adts", "kind": "audio", "strength": "structure", "evidence": [ { "at": 0, "len": 7, "is": "frame_header" } ], "walked_to": 1048576, "stopped": { "at": 1048576, "why": "limit" }, "facts": { "audio_object_type": 2, "sample_rate": 48000, "channel_configuration": 2, "frames_read": 1024 }, "tracks": [], "capabilities": [ "wai.audio.aac" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1126400, "distinct_bytes": 7, "zero_bytes": 1118700, "chi_square": 283305550, "windows": 275, "uniform_windows": 0, "text": false, "periods": [] } } }, { "file": "gen/av1-unit.bin", "origin": "gen", "what": "600 pairs of OBUs, the head ending inside one: limit", "sha256": "8333f87c669bf58e6b8db8c334edabe9f959ce8b56398a35ab95acc464724f49", "repeat": 600, "result": { "format": "wai.identify/1", "size": 1234800, "verdict": "identified", "candidates": [ { "id": "av1-obu", "kind": "elementary", "strength": "structure", "evidence": [ { "at": 0, "len": 7, "is": "sequence_header" } ], "walked_to": 1047529, "stopped": { "at": 1047529, "why": "limit" }, "facts": { "profile": 0, "level": 4, "width": 256, "height": 128, "units_read": 1019 }, "tracks": [], "capabilities": [ "wai.video.av1" ] } ], "probes_accepted": [], "embedded": [], "embedded_capped": false, "measures": { "scanned": 1234800, "distinct_bytes": 11, "zero_bytes": 1228800, "chi_square": 311810209, "windows": 301, "uniform_windows": 0, "text": false, "periods": [] } } } ] }