For live, presentation.duration is Infinity as soon as the presentation resolves — before any segment appends. updateMediaSourceDuration is composed before the buffer actors, so its entry runs while the MediaSource is freshly open and empty: write Infinity synchronously there (no buffered clamp needed, Infinity ≥ any range). This gets ahead of the first append, which would otherwise set duration to the buffered end (MSE coded-frame-processing) and pin the live stream to a finite, live-edge duration — the async wait-for-idle path loses that race because a live loader appends continuously. VoD keeps the existing wait-open/idle + clamp + write-once-while-NaN path. Verified against a live Mux CMAF stream: mediaSource.duration is Infinity from the start, no finite transient. 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
If you need help with anything related to Video.js 10, or if you'd like to casually chat with other members:
Contributing
We'd love for you to join our community channels above and give us feedback! Feedback on any of the following would help us:
- 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
Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms.