- D-14-remux WebM remux pipeline (ts-ebml parse + webm-muxer write)
replaces D-13 file-concat; single-EBML-headered output empirically
spans 29.954 s of 912 VP9 frames (matching the per-segment sum
301+300+311 with zero loss).
- All 5 RED unit tests in tests/background/webm-remux.test.ts flipped
GREEN; 2 SW-compat tests in webm-remux-deps.test.ts GREEN; 53 baseline
tests preserved. tsc exit 0. npm run build exit 0.
- mergeVideoSegments deleted from src/background/index.ts; only a
retirement comment naming Plan 01-08 D-14-remux remains.
EmptyVideoBufferError surface preserved (W-01 free-text rename only).
- CONTEXT.md amendment provenance verified intact (B-01 grep checks all
pass — no file mutation by this plan; the orchestrator landed the
amendment at plan-creation time in commit 2e499d7).
- 2 deviations documented (Rule 1: tsc-required codec field in
EncodedVideoChunkMetadata; Rule 3: stale comment cleanup in
decodeBufferSegments). No scope creep.
- Self-check: all 6 files + 4 task commits verified present.
- Task 5 = checkpoint:human-verify (operator regenerates
tests/fixtures/last_30sec.webm via ./smoke.sh, confirms Chrome + mpv
playback ~30 s, flips the 2 webm-playback duration tests GREEN).
Mark
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