Lossless video transfer in WebRTC: VK Calls experience
summary
Explains how screen capture and screen sharing are implemented over WebRTC and why sending game or video streams differs from presentations or text. Describes using WebRTC with WebCodecs, Media Source Extensions, WASM, the WebM video format, and DataChannel, and why VK Calls built a a custom implementation to deliver lossless video.
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chapters (14)
- 0:00Introduction
- 2:30WebRTC experience
- 6:50Call mechanics
- 11:56Screen capture & media
- 15:31Scaling & servers
- 18:04High-quality video in poor networks
- 21:34WebCodecs features
- 25:50libpixels for browsers
- 30:31WebCodecs lessons
- 34:53WebM for video
- 37:46WebM client
- 42:04Summary
- 43:34VK call features & outlook
- 44:59Conclusion & Q&A
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