WebRTC Scalable Video Coding extensions

Category: WebRTC
Type: New or changed feature
Status: Enabled by default (Chrome 111)
Intent stage: Prepare to ship

Summary

This extension defines a standard method for picking between possible Scalable Video Coding (SVC) configurations on an outgoing WebRTC video track.

Motivation

Many video codecs (VP8, VP9, AV1, H264-SVC) have modes that allow an encoder to send out video data in such a format that it's possible to strip out certain packets from the stream and reconstruct a lower quality video stream from the result. This makes providing video at differing qualities to multiple destinations for the same video stream easier.

Standards & signals

Specification: https://w3c.github.io/webrtc-svc/
Firefox: No signal
Safari: No signal
Web developers: No signals
Tracking bug: https://bugs.chromium.org/p/chromium/issues/detail?id=986069

Docs: https://w3c.github.io/webrtc-svc/

Explainers: https://w3c.github.io/webrtc-svc/

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