M122 Release Notes

[Harald Alvestrand]

WebRTC M122 is going to be released as part of Chrome M122, currently planned for release on February 20, 2024.

We had one PSA for M122:

• PSA: Replacing RTCStatsMember<T> with absl::optional<T> in progress, use Attributes() instead of Members() which is extending into M123

and one new feature is shipping:

• RTCRtpSender setParameters() extensions for requesting the generation of a key frame

The following issues were marked as fixed or verified and had at least one commit in M122 (build, test and trivial code changes are not included):

Issue	Summary	Component
webrtc:15145	SDP offer with m-line not containing unsupported video codec results in error	PeerConnection
webrtc:15661	ByteBufferReader should use uint8_t not char	Internals
chromium:1512631	Cloned encoded video frames have RTP retransmission disabled	Blink>WebRTC >PeerConnection
webrtc:15770	getStats local-candidate url is missing hostname in some cases and IPv6 hostnames lack []	PeerConnection
webrtc:15713	Hitting CHECK in H264 Processing	Video
webrtc:15164	Replace use of RTCStatsMember<T> with absl::optional<T> instead	Stats
chromium:1508337	Cloning RTCEncodedAudioFrames drops CSRCs	Blink>WebRTC >PeerConnection
webrtc:15656	Unify plumbering of widely used components.	Internals
webrtc:15704	Rename "metronome" to "decode_metronome"	PeerConnection
webrtc:9987	Clean up WebRTC threading	Internals
webrtc:15574	Consider how "No media" is signalled when creating a PeerConnection	Cleanup
chromium:1354491	Make the TaskQueuePacedSender bursty.	Blink>WebRTC >PeerConnection
chromium:1486851	CGDisplayStreamCreate() in macOS media picker	Blink>GetDisplayMedia
chromium:1375217	tracking bug for webrtc-internals ui/ux improvements	Blink>WebRTC>Tools
chromium:1354101	RTCRtpSender setParameters() extensions for requesting the generation of a key frame	Blink>WebRTC >PeerConnection
chromium:822696	Deprecate and remove legacy getStats() API (the non-standard callback-based one)	Blink>WebRTC >PeerConnection
chromium:1297521	Track WebRTC FrameBuffer Field Trial Rollout	Blink>WebRTC>Video

For the full list of commits please refer to the git log between this branch and the previous branch. See here for a description of what the release notes contain.

We strongly recommend WebRTC developers to fully test their services in Chrome Beta to ensure stability for end-users.

 

The Chrome release schedule can be found here.

These release notes were prepared by Philipp Hancke.