Christian PillsburyandClaude Opus 4.8
cf8aaca45b
Minimal ISO-BMFF box walker (media/mp4/box.ts) plus decode-time origin extraction (timestamp-origin.ts) for the non-zero-PTS timestampOffset relocation spike. Relocating a source by tfdt.baseMediaDecodeTime (a DTS) over mdhd.timescale keeps the earliest DTS >= 0, so a Chromium negative-DTS append failure is impossible by construction. Two variants share the box walker and leaf field-readers: - Presumptive (readFirstMediaTimescale / readFirstBaseMediaDecodeTime): the first mdhd timescale + first tfdt baseMediaDecodeTime, no track_id, no iteration. For single-media-track sources. - Track-selected (findMediaTrack by hdlr handler / readBaseMediaDecodeTime by tfhd track_id): the track_id joins one track's timescale to the same track's baseMediaDecodeTime -- required when a source muxes CEA-608/708 captions into the same moov/moof (each track carries its own timescale and baseMediaDecodeTime). Split into separate exports so caption-free platforms tree-shake the matching machinery away (~37% smaller minified than the track-selected pair). 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.
Documentation
If you'd like to get started and learn more, you can find our documentation on our website:
Community
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- Player skin designs
- Component structures and APIs
- Package structure and exports
- Repo, workspace, contributor guides
Please see our contributing guide for getting set up locally and making code or docs changes.
Code of Conduct
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