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"anchor": "bottom-center",
"origin": "machine",
"italic": [],
"final": false
}
]
},
{
"at": 60500000,
"cues": [
{
"principal": "asr",
"text": "this line still shows",
"anchor": "bottom-center",
"origin": "machine",
"italic": [],
"final": true
},
{
"principal": "asr",
"text": "we now cross the minute.",
"anchor": "bottom-center",
"origin": "machine",
"italic": [],
"final": true
}
]
},
{
"at": 61200000,
"cues": [
{
"principal": "asr",
"text": "we now cross the minute.",
"anchor": "bottom-center",
"origin": "machine",
"italic": [],
"final": true
},
{
"principal": "asr",
"text": "after the join",
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"origin": "machine",
"italic": [],
"final": true
}
]
},
{
"at": 62400000,
"cues": [
{
"principal": "asr",
"text": "after the join",
"anchor": "bottom-center",
"origin": "machine",
"italic": [],
"final": true
}
]
}
]
}
},
{
"name": "annotation_malformed",
"about": "An annotation whose anchor is 9 (§4.2): annotation_malformed.",
"events": [
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],
"outcome": "refuse",
"reason": "annotation_malformed",
"index": 1
},
{
"name": "annotation_misplaced",
"about": "An annotation after a chat event, not after a caption (§4.3): annotation_misplaced.",
"events": [
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"outcome": "refuse",
"reason": "annotation_misplaced",
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},
{
"name": "supersede_unknown",
"about": "A revision superseding a caption the principal never sent, its chain whole (§4.3): supersede_unknown.",
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"outcome": "refuse",
"reason": "supersede_unknown",
"index": 1
},
{
"name": "supersede_final",
"about": "A revision superseding a final caption (§4.3): supersede_final.",
"events": [
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],
"outcome": "refuse",
"reason": "supersede_final",
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},
{
"name": "supersede_forked",
"about": "Two revisions superseding one partial (§4.3): supersede_forked.",
"events": [
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],
"outcome": "refuse",
"reason": "supersede_forked",
"index": 5
},
{
"name": "supersede_mismatch",
"about": "A revision in another language than the partial it supersedes (§4.3): supersede_mismatch.",
"events": [
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],
"outcome": "refuse",
"reason": "supersede_mismatch",
"index": 3
},
{
"name": "stability_broken",
"about": "A revision that changes the stable prefix of the partial it supersedes (§4.3): stability_broken.",
"events": [
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],
"outcome": "refuse",
"reason": "stability_broken",
"index": 3
},
{
"name": "text_not_in_subset",
"about": "A caption with two spaces in a row, which IMSC1's white-space handling would collapse (§3.2): text_not_in_subset.",
"events": [
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],
"outcome": "refuse",
"reason": "text_not_in_subset",
"index": 0
},
{
"name": "machine_without_model",
"about": "A machine caption with no model digest: live-events §4.10 reads 32 bytes of model after origin 2, so the record is refused there, malformed_payload, before this extension reads it (§10.1).",
"events": [
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],
"outcome": "refuse",
"reason": "malformed_payload",
"index": 0
},
{
"name": "not_final",
"about": "A stream that ends on a partial: it verifies, and resolving it to cues is refused, not_final (§4.5).",
"events": [
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],
"outcome": "accept",
"revisions": [
{
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"annotation": 1,
"final": false,
"unknown": false,
"stable_cp": 4,
"anchor": "bottom-center",
"italic": [],
"supersedes": null
}
],
"shown": [],
"resolve": {
"reason": "not_final",
"index": 0
}
},
{
"name": "duration_unknown",
"about": "A final caption with no stated duration: it verifies, and resolving it is refused, duration_unknown (§4.5).",
"events": [
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],
"outcome": "accept",
"revisions": [
{
"index": 0,
"annotation": null,
"final": true,
"unknown": false,
"stable_cp": 6,
"anchor": "bottom-center",
"italic": [],
"supersedes": null
}
],
"shown": [],
"resolve": {
"reason": "duration_unknown",
"index": 0
}
}
],
"cue_vectors": [
{
"name": "styles_and_anchors",
"about": "Every anchor (§3.3), italic runs at a line's start, end and middle and across a line break's neighbours, the characters WebVTT and XML escape, and two cues back to back. WebVTT, segments, IMSC1, both timelines and 608 pop-on, whose positioning uses each indent, every tab offset, the italic preamble address code and both mid-row codes.",
"lang": "en",
"cues": [
{
"start": 11000,
"end": 13000,
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"sidecar": "{\"wai_timed_text\":1,\"lang\":\"en\",\"cues\":[{\"start\":11000,\"end\":13000,\"origin\":\"human\"},{\"start\":13500,\"end\":15500,\"origin\":\"machine\",\"model\":\"28be58c8cc7105cac6b0412115293f5b487b4de6403b0019ea1c9b7dc7f89b6c\"},{\"start\":16000,\"end\":18000,\"origin\":\"machine-reviewed\",\"model\":\"ef0c13d7be23ebedb9e3dd853d5185f0a631d8d91b615ecb550c921fefa13181\"},{\"start\":18500,\"end\":20500,\"origin\":\"machine\",\"model\":\"c57ea8ebe4d2e130d9f5dbf5061b2955fb5b96e34ccccb0b1d8e359d6bba22b0\"}]}",
"c2pa": "{\"digitalSourceType\":\"http://cv.iptc.org/newscodes/digitalsourcetype/compositeSynthetic\",\"assertions\":[{\"label\":\"c2pa.ai-disclosure\",\"data\":{\"modelType\":\"c2pa.types.model\",\"modelIdentifier\":\"tag:transaction.science,2026:wai/model/28be58c8cc7105cac6b0412115293f5b487b4de6403b0019ea1c9b7dc7f89b6c\",\"contentProfile\":{\"humanOversightLevel\":\"fully_autonomous\"}}},{\"label\":\"c2pa.ai-disclosure__1\",\"data\":{\"modelType\":\"c2pa.types.model\",\"modelIdentifier\":\"tag:transaction.science,2026:wai/model/ef0c13d7be23ebedb9e3dd853d5185f0a631d8d91b615ecb550c921fefa13181\",\"contentProfile\":{\"humanOversightLevel\":\"human_validated\"}}},{\"label\":\"c2pa.ai-disclosure__2\",\"data\":{\"modelType\":\"c2pa.types.model\",\"modelIdentifier\":\"tag:transaction.science,2026:wai/model/c57ea8ebe4d2e130d9f5dbf5061b2955fb5b96e34ccccb0b1d8e359d6bba22b0\",\"contentProfile\":{\"humanOversightLevel\":\"fully_autonomous\"}}}]}",
"catalog_webvtt": "{\"name\":\"captions-en\",\"packaging\":\"eventtimeline\",\"eventType\":\"urn:msf:captions:webvtt\",\"mimeType\":\"application/json\",\"depends\":[\"video\"],\"role\":\"caption\",\"lang\":\"en\",\"wai_machine_generated\":true}",
"catalog_imsc": "{\"name\":\"captions-en-imsc\",\"packaging\":\"eventtimeline\",\"eventType\":\"urn:msf:captions:imsc1\",\"mimeType\":\"application/json\",\"depends\":[\"video\"],\"role\":\"caption\",\"lang\":\"en\",\"imsc1Mode\":\"cue\",\"wai_machine_generated\":true}"
}
}
},
{
"name": "cc_characters",
"about": "608's special and extended characters (§8.4): every special character, the transparent space as U+00A0, extended characters of both tables each after its standard fallback, two notes in a row (four pairs, since a repeat in the next slot is redundant), the basic set's own accented letters, and the substitutions of ’ and –. WebVTT and IMSC1 keep the same text in UTF-8.",
"lang": "en",
"cues": [
{
"start": 11000,
"end": 13000,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "♪♪ ® ° ½ ¿ ™ ¢ £ à è â ê î ô û",
"italic": []
},
{
"start": 13500,
"end": 15500,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "Él dijo «sí» ¡Ñandú!\nç ÷ á é í ó ú ñ",
"italic": []
},
{
"start": 16000,
"end": 18000,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "Ä ö ß Ø å {x} \\ ^ _ | ~\n* — © ℠ “q”",
"italic": []
},
{
"start": 18500,
"end": 20500,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "It’s 9–5 ┌┐└┘ ¥ ¤ ¦\n‘ • Ã õ Ì ì Ò",
"italic": []
}
],
"targets": {
"webvtt": {
"file": "cc_characters.vtt"
},
"imsc": {
"file": "cc_characters.ttml"
},
"cc608": [
{
"mode": "pop-on",
"rate": [
30000,
1001
],
"file": "cc_characters.pop-on.608.hex",
"decoded": [
{
"show": 330,
"rows": [
{
"row": 15,
"col": 1,
"text": "♪♪ ® ° ½ ¿ ™ ¢ £ à è â ê î ô û",
"italic": []
}
]
},
{
"erase": 390
},
{
"show": 405,
"rows": [
{
"row": 14,
"col": 6,
"text": "Él dijo «sí» ¡Ñandú!",
"italic": []
},
{
"row": 15,
"col": 8,
"text": "ç ÷ á é í ó ú ñ",
"italic": []
}
]
},
{
"erase": 465
},
{
"show": 480,
"rows": [
{
"row": 14,
"col": 4,
"text": "Ä ö ß Ø å {x} \\ ^ _ | ~",
"italic": []
},
{
"row": 15,
"col": 10,
"text": "* — © ℠ “q”",
"italic": []
}
]
},
{
"erase": 540
},
{
"show": 555,
"rows": [
{
"row": 14,
"col": 6,
"text": "It's 9-5 ┌┐└┘ ¥ ¤ ¦",
"italic": []
},
{
"row": 15,
"col": 9,
"text": "‘ • Ã õ Ì ì Ò",
"italic": []
}
]
},
{
"erase": 615
}
]
}
]
}
},
{
"name": "cc_rollup",
"about": "608 roll-up with windows of 2, 3 and 4 rows (§8.7): one roll-up command at the start, a carriage return before every line but the first after an erase, an erase at a gap between cues and at the end, italics by preamble address code and by mid-row code. The same cues on a 25 Hz slot clock show the frame-rate dependence (§8.2): other slots, the same bytes.",
"lang": "en",
"cues": [
{
"start": 11000,
"end": 14000,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-left",
"text": "Roll-up keeps the lines\nabove it on screen.",
"italic": [
[
0,
7
]
]
},
{
"start": 14000,
"end": 16000,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "Then a new line rolls in.",
"italic": [
[
7,
3
]
]
},
{
"start": 17000,
"end": 19000,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-right",
"text": "After a gap, it starts clean.",
"italic": []
}
],
"targets": {
"cc608": [
{
"mode": "roll-up-2",
"rate": [
30000,
1001
],
"file": "cc_rollup.roll-up-2.608.hex",
"decoded": [
{
"line": 332,
"row": {
"row": 15,
"col": 0,
"text": "Roll-up keeps the lines",
"italic": [
[
0,
7
]
]
}
},
{
"line": 350,
"row": {
"row": 15,
"col": 0,
"text": "above it on screen.",
"italic": []
}
},
{
"line": 422,
"row": {
"row": 15,
"col": 3,
"text": "Then a new line rolls in.",
"italic": [
[
7,
3
]
]
}
},
{
"erase": 480
},
{
"line": 510,
"row": {
"row": 15,
"col": 3,
"text": "After a gap, it starts clean.",
"italic": []
}
},
{
"erase": 570
}
]
},
{
"mode": "roll-up-3",
"rate": [
30000,
1001
],
"file": "cc_rollup.roll-up-3.608.hex",
"decoded": [
{
"line": 332,
"row": {
"row": 15,
"col": 0,
"text": "Roll-up keeps the lines",
"italic": [
[
0,
7
]
]
}
},
{
"line": 350,
"row": {
"row": 15,
"col": 0,
"text": "above it on screen.",
"italic": []
}
},
{
"line": 422,
"row": {
"row": 15,
"col": 3,
"text": "Then a new line rolls in.",
"italic": [
[
7,
3
]
]
}
},
{
"erase": 480
},
{
"line": 510,
"row": {
"row": 15,
"col": 3,
"text": "After a gap, it starts clean.",
"italic": []
}
},
{
"erase": 570
}
]
},
{
"mode": "roll-up-4",
"rate": [
30000,
1001
],
"file": "cc_rollup.roll-up-4.608.hex",
"decoded": [
{
"line": 332,
"row": {
"row": 15,
"col": 0,
"text": "Roll-up keeps the lines",
"italic": [
[
0,
7
]
]
}
},
{
"line": 350,
"row": {
"row": 15,
"col": 0,
"text": "above it on screen.",
"italic": []
}
},
{
"line": 422,
"row": {
"row": 15,
"col": 3,
"text": "Then a new line rolls in.",
"italic": [
[
7,
3
]
]
}
},
{
"erase": 480
},
{
"line": 510,
"row": {
"row": 15,
"col": 3,
"text": "After a gap, it starts clean.",
"italic": []
}
},
{
"erase": 570
}
]
},
{
"mode": "roll-up-2",
"rate": [
25,
1
],
"file": "cc_rollup.roll-up-2.r25-1.608.hex",
"decoded": [
{
"line": 277,
"row": {
"row": 15,
"col": 0,
"text": "Roll-up keeps the lines",
"italic": [
[
0,
7
]
]
}
},
{
"line": 295,
"row": {
"row": 15,
"col": 0,
"text": "above it on screen.",
"italic": []
}
},
{
"line": 352,
"row": {
"row": 15,
"col": 3,
"text": "Then a new line rolls in.",
"italic": [
[
7,
3
]
]
}
},
{
"erase": 400
},
{
"line": 425,
"row": {
"row": 15,
"col": 3,
"text": "After a gap, it starts clean.",
"italic": []
}
},
{
"erase": 475
}
]
},
{
"mode": "pop-on",
"rate": [
25,
1
],
"file": "cc_rollup.pop-on.r25-1.608.hex",
"decoded": [
{
"show": 275,
"rows": [
{
"row": 14,
"col": 0,
"text": "Roll-up keeps the lines",
"italic": [
[
0,
7
]
]
},
{
"row": 15,
"col": 0,
"text": "above it on screen.",
"italic": []
}
]
},
{
"show": 350,
"rows": [
{
"row": 15,
"col": 3,
"text": "Then a new line rolls in.",
"italic": [
[
7,
3
]
]
}
]
},
{
"erase": 400
},
{
"show": 425,
"rows": [
{
"row": 15,
"col": 3,
"text": "After a gap, it starts clean.",
"italic": []
}
]
},
{
"erase": 475
}
]
}
]
}
},
{
"name": "time_out_of_range",
"about": "A cue ending after 99:59:59.999 (§3.1).",
"lang": "en",
"cues": [
{
"start": 1000,
"end": 360000000,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "late",
"italic": []
}
],
"targets": {
"webvtt": {
"reason": "time_out_of_range"
}
}
},
{
"name": "cue_malformed",
"about": "An italic range that begins at a space (§3.2 rule 4).",
"lang": "en",
"cues": [
{
"start": 1000,
"end": 2000,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "a big idea",
"italic": [
[
1,
4
]
]
}
],
"targets": {
"webvtt": {
"reason": "cue_malformed"
}
}
},
{
"name": "model_missing",
"about": "A machine cue with no model digest (§3.4).",
"lang": "en",
"cues": [
{
"start": 1000,
"end": 2000,
"lang": "en",
"origin": "machine",
"model": null,
"anchor": "bottom-center",
"text": "who wrote this",
"italic": []
}
],
"targets": {
"webvtt": {
"reason": "model_missing"
},
"imsc": {
"reason": "model_missing"
}
}
},
{
"name": "text_not_in_subset",
"about": "A tab in the text (§3.2 rule 2).",
"lang": "en",
"cues": [
{
"start": 1000,
"end": 2000,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "a\tb",
"italic": []
}
],
"targets": {
"imsc": {
"reason": "text_not_in_subset"
}
}
},
{
"name": "language_mismatch",
"about": "A French cue in an English document (§3.4).",
"lang": "en",
"cues": [
{
"start": 1000,
"end": 2000,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "hello",
"italic": []
},
{
"start": 2000,
"end": 3000,
"lang": "fr",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "bonjour",
"italic": []
}
],
"targets": {
"webvtt": {
"reason": "language_mismatch"
},
"imsc": {
"reason": "language_mismatch"
}
}
},
{
"name": "cues_overlap",
"about": "Two cues at once, which pop-on and roll-up cannot show (§8.6).",
"lang": "en",
"cues": [
{
"start": 1000,
"end": 3000,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "one",
"italic": []
},
{
"start": 2000,
"end": 4000,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "top-center",
"text": "two",
"italic": []
}
],
"targets": {
"webvtt": {
"file": "cues_overlap.vtt"
},
"cc608": [
{
"mode": "pop-on",
"rate": [
30000,
1001
],
"reason": "cues_overlap"
}
]
}
},
{
"name": "too_many_rows",
"about": "Five lines in one pop-on caption (§8.5).",
"lang": "en",
"cues": [
{
"start": 1000,
"end": 3000,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "1\n2\n3\n4\n5",
"italic": []
}
],
"targets": {
"cc608": [
{
"mode": "pop-on",
"rate": [
30000,
1001
],
"reason": "too_many_rows"
}
]
}
},
{
"name": "row_too_long",
"about": "A line of 33 characters (§8.5).",
"lang": "en",
"cues": [
{
"start": 1000,
"end": 3000,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
"italic": []
}
],
"targets": {
"cc608": [
{
"mode": "pop-on",
"rate": [
30000,
1001
],
"reason": "row_too_long"
}
]
}
},
{
"name": "char_not_in_608",
"about": "A character with no 608 code and no substitution (§8.4).",
"lang": "en",
"cues": [
{
"start": 1000,
"end": 3000,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "price: 5 €",
"italic": []
}
],
"targets": {
"cc608": [
{
"mode": "pop-on",
"rate": [
30000,
1001
],
"reason": "char_not_in_608"
}
]
}
},
{
"name": "style_not_expressible",
"about": "Italics that begin inside a word: a mid-row code would add a space (§8.5).",
"lang": "en",
"cues": [
{
"start": 1000,
"end": 3000,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "unbelievable",
"italic": [
[
2,
4
]
]
}
],
"targets": {
"webvtt": {
"file": "style_not_expressible.vtt"
},
"cc608": [
{
"mode": "pop-on",
"rate": [
30000,
1001
],
"reason": "style_not_expressible"
}
]
}
},
{
"name": "too_dense",
"about": "A second caption whose bytes do not fit between the first one's display and its own start (§8.6).",
"lang": "en",
"cues": [
{
"start": 1000,
"end": 1100,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
"italic": []
},
{
"start": 1100,
"end": 1300,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy",
"italic": []
}
],
"targets": {
"cc608": [
{
"mode": "pop-on",
"rate": [
30000,
1001
],
"reason": "too_dense"
}
]
}
},
{
"name": "hrm_exceeded",
"about": "Cues of forty new characters a tenth of a second apart, more than the hypothetical render model paints (§6.2).",
"lang": "en",
"cues": [
{
"start": 1000,
"end": 1100,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmn",
"italic": []
},
{
"start": 1100,
"end": 1200,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "JKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvw",
"italic": []
},
{
"start": 1200,
"end": 1300,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "STUVWXYZabcdefghijklmnopqrstuvwxyz012345",
"italic": []
},
{
"start": 1300,
"end": 1400,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "bcdefghijklmnopqrstuvwxyz0123456789ABCDE",
"italic": []
},
{
"start": 1400,
"end": 1500,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "klmnopqrstuvwxyz0123456789ABCDEFGHIJKLMN",
"italic": []
},
{
"start": 1500,
"end": 1600,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "tuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVW",
"italic": []
},
{
"start": 1600,
"end": 1700,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "23456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdef",
"italic": []
},
{
"start": 1700,
"end": 1800,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "BCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmno",
"italic": []
},
{
"start": 1800,
"end": 1900,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "KLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwx",
"italic": []
},
{
"start": 1900,
"end": 2000,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "TUVWXYZabcdefghijklmnopqrstuvwxyz0123456",
"italic": []
}
],
"targets": {
"webvtt": {
"file": "hrm_exceeded.vtt"
},
"imsc": {
"reason": "hrm_exceeded"
}
}
},
{
"name": "parameter_malformed",
"about": "Segment bounds that do not ascend (§5.2).",
"lang": "en",
"cues": [
{
"start": 1000,
"end": 2000,
"lang": "en",
"origin": "human",
"model": null,
"anchor": "bottom-center",
"text": "x",
"italic": []
}
],
"targets": {
"segments": {
"bounds": [
0,
4000,
4000
],
"mpegts0": 900000,
"reason": "parameter_malformed"
}
}
}
],
"read_cases": [
{
"name": "settings_unknown",
"about": "a cue whose settings are not one anchor's (§5.3)",
"lang": "en",
"text": "WEBVTT\n\n00:00:01.000 --> 00:00:02.000 align:center\nhello\n",
"reason": "vtt_malformed"
},
{
"name": "trailing_blank",
"about": "a blank line after the last cue (§5.3)",
"lang": "en",
"text": "WEBVTT\n\n00:00:01.000 --> 00:00:02.000 line:90%,end position:50%,center size:80% align:center\nhello\n\n",
"reason": "vtt_malformed"
},
{
"name": "entity_unknown",
"about": "a character reference the writer never writes (§5.3)",
"lang": "en",
"text": "WEBVTT\n\n00:00:01.000 --> 00:00:02.000 line:90%,end position:50%,center size:80% align:center\nhello there\n",
"reason": "vtt_malformed"
},
{
"name": "label_without_model",
"about": "a machine label with no model class (§10.4)",
"lang": "en",
"text": "WEBVTT\n\n00:00:01.000 --> 00:00:02.000 line:90%,end position:50%,center size:80% align:center\nhello\n",
"reason": "model_missing"
},
{
"name": "italic_adjacent",
"about": "two italic spans with nothing between them (§5.3)",
"lang": "en",
"text": "WEBVTT\n\n00:00:01.000 --> 00:00:02.000 line:90%,end position:50%,center size:80% align:center\nab\n",
"reason": "vtt_malformed"
},
{
"name": "starts_descend",
"about": "cue starts that go back (§5.3)",
"lang": "en",
"text": "WEBVTT\n\n00:00:02.000 --> 00:00:03.000 line:90%,end position:50%,center size:80% align:center\nb\n\n00:00:01.000 --> 00:00:02.000 line:90%,end position:50%,center size:80% align:center\na\n",
"reason": "vtt_malformed"
},
{
"name": "italic_at_space",
"about": "an italic span that begins at a space (§3.2 rule 4)",
"lang": "en",
"text": "WEBVTT\n\n00:00:01.000 --> 00:00:02.000 line:90%,end position:50%,center size:80% align:center\na b\n",
"reason": "cue_malformed"
}
],
"decode_cases": [
{
"name": "parity",
"about": "a byte with even parity (§8.3)",
"hex": "311 9520\n",
"reason": "cc_malformed"
},
{
"name": "backspace",
"about": "a backspace, which this encoder never sends (§8.8)",
"hex": "0 9420\n1 9420\n2 94a1\n3 94a1\n",
"reason": "cc_malformed"
},
{
"name": "descending",
"about": "slots that do not ascend (§8.3)",
"hex": "5 9420\n4 9420\n",
"reason": "cc_malformed"
},
{
"name": "unassigned",
"about": "0x12 0x29, which this revision leaves unassigned (§8.4)",
"hex": "0 9420\n1 9420\n2 9152\n3 9152\n4 c180\n5 9229\n6 9229\n",
"reason": "cc_malformed"
}
]
}