Christian PillsburyandClaude Opus 4.8
0cb33bb532
Rework live anchoring around a single shared anchor established only from
authoritative buffer ground truth, dropping the unreliable manifest estimate:
- anchorLiveTracks establishes the anchor once per source from the first
actually-buffered A/V track (the buffer actor's `initTrackId`, not the
selection), stamps it onto every track via `positionAllTracksToAnchor`
(resolved tracks shift; not-yet-resolved shells get `startDate` for the
parser's `placeOnAnchor`), and publishes it as `liveAnchor`.
- seekToLiveEdge gates its live-edge seek on `liveAnchor`: with no estimate the
pre-anchor window is the raw one, and seeking there would strand the playhead
when the pin later shifts the window. Gating holds the seek until the timeline
is anchored, so it targets the final native-PTS window. (Smoke-tested on Mux
LL-HLS: single seek to the live edge after the pin, clean startup.)
- The resolveBufferedAnchor seam becomes `(deps) -> { trackId, segmentId,
actualStart }`, reading the buffer actor directly (video-first).
An intermittent ~2 s audio model-`startDate` offset (buffers stay aligned, so
playback is synced) remains, tracked as a separate startup race.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Video.js v10
Modern, modular, and composable media player framework for Web and React.
🚧 Beta - close to stable. Experimental adoption in real projects. 🚧
Video.js v10 is close to stable. Try it out in real projects and share your feedback 🙏.
- Read our design documents.
- Read the v10 discussion topic.
- Watch Heff's recent presentation.
Timeline
- Technical Preview (Complete): Initial showcase for Demuxed.
- Alpha (Complete): See milestone
- Beta (Complete): See milestone
- GA (Mid 2026): See milestone ← WIP
- Video.js (End of 2026): Video.js core/contrib parity and supported plugins migrated.
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