Christian PillsburyandClaude Opus 4.8 b820064b77 wip(spf): per-type relocation keying + non-0th-segment origin fix ...

- Key mediaContainerData by track *type* (video/audio), not track id: one
  init+media pair per type, ABR rungs share the origin. relocationMessagePipelines
  -> relocationPipelinesFor(type); the engines pass per-type.
- #4 fix: record the discovered segment's 0-based startTime and derive the origin
  as baseMediaDecodeTime/timescale - segmentStartTime, so relocation is correct when
  the first loaded segment isn't the 0th (non-zero initial currentTime, live/DVR).
  Adds segmentStartTime to MediaContainerData.
- Rename derivePerTrackStartMediaTime -> derivePerTypeStartMediaTime; stampTracks
  applies each type's origin to every track of that type.
- Add establish-start-media-time derive unit test.

Unit-verified (segmentStartTime=100 still yields origin 60) and end-to-end
sandbox-verified: start-at-300 buffers around the playhead (0-based); default
start-at-0 A/V + audio-only remain 0-based.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

2026-07-10 07:20:43 -07:00

..

decisions

refactor(spf): rename anchorLiveTracks to anchorPresentationTimeline

2026-06-25 10:00:46 -07:00

design

wip(spf): per-type relocation keying + non-0th-segment origin fix

2026-07-10 07:20:43 -07:00