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.



Specification link

Specification being incubated in a Community Group

Status in Chromium


In developer trial (Behind a flag) (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 2022-01-05