7ab2559fd2
Fix round, items 4 and 3. Item 4 (decision: build it). §5.6 restores the design's rule for choosing q per piece from q_candidates under max_sse_px_milli: the candidates read as a set, encoded from the largest down, the first with floor(SSE*1000/(3whn)) <= max_sse_px_milli chosen, so candidates that meet the bound alike are decided by their step; where none meets it, the smallest. wai_pack::encode::choose_q is the function the packer's base encode will call. Departure from the design's plan: the rule is specified and built here, ahead of the stage that writes objects, and states its ties and its no-candidate case, which the design left open. §5.5 now says what is true today: wai-pack does not write objects yet and will write these with int_video_enc at the step §5.6 chooses. Goldens: pack-conformance/qchoice, every piece of every fixture under two bounds (one splitting pieces between steps 8 and 4, one that most pieces meet at no step), with each candidate's SSE, the choice and the chosen payload's BLAKE3. Item 3. pack_verify.py no longer trusts a self-consistent closed loop: from each golden payload's decode it recomputes every motion vector by the §5.5 search (its order and tie-break) on the source and the previous decoded frame, every coded residual (the stream's symbols) as quantize(source - prediction), and the residual table and offset as the §5.5 fit of those residuals. For the step goldens it runs an encoder of its own (search, quantization, reconstruction) to recompute every candidate's SSE and the choice. Co-Authored-By: Claude Opus 5.5 <[email protected]>
817 lines
19 KiB
JSON
817 lines
19 KiB
JSON
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