DRFT
Contact emails

h...@chromium.org, sergio.garcia.muri...@gmail.com

Explainer

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

Specification

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

Design docs

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

Summary

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



Blink component

Blink>WebRTC>Video
<https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EWebRTC%3EVideo>

Search tags

video <https://chromestatus.com/features#tags:video>, svc
<https://chromestatus.com/features#tags:svc>

TAG review

https://github.com/w3ctag/design-reviews/issues/396

TAG review status

Issues addressed

RisksNone identified

*Interoperability and Compatibility*

This is the first implementation of the spec.

Gecko: Positive - https://github.com/mozilla/standards-positions/issues/544

WebKit: Positive, with change request  -
https://lists.webkit.org/pipermail/webkit-dev/2021-October/032008.html

https://github.com/w3c/webrtc-svc/issues/49


Web developers: Positive (sample
<https://medooze.medium.com/mastering-the-av1-svc-chains-a4b2a6a23925>)



*Ergonomics*

This is an extension to the WebRTC 1.0 API (webrtc-pc).
Support can be detected by checking the presence of scalabilityModes values
in the RTCRtpCodecCapability dictionary.


*Security*

None identified above what's already part of video in WebRTC in general.


Debuggability

No special considerations.

Is this feature fully tested by web-platform-tests
<https://chromium.googlesource.com/chromium/src/+/master/docs/testing/web_platform_tests.md>
?

Yes (as far as the API surface goes; effect on bitstream content is not
tested).

Flag name

RTCSvcScalabilityMode

Requires code in //chrome?

False

Tracking bug

https://bugs.chromium.org/p/chromium/issues/detail?id=986069

Estimated milestones

M97


Link to entry on the Chrome Platform Status

https://chromestatus.com/feature/5769626174619648

This intent message was generated by Chrome Platform Status
<https://www.chromestatus.com/>.

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