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


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.



Editor's draft

Status in Chromium


In development (tracking bug)

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

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Search tags

video, svc,

Last updated on 2021-04-01