PSA: WebRTC M99 Release Notes

[Huib Kleinhout]

WebRTC M99 Release Notes

Branch: WebRTC M99 branch

Summary

WebRTC M99, currently available in Chrome's stable channel, contains 3 new features and over 27 bug fixes, enhancements and stability/performance improvements. We encourage all developers to run versions of Chrome on the Canary, Dev, and Beta channels frequently and quickly report any issues found. Please take a look at this page, for some pointers on how to file a good bug report. The help we have received has been invaluable!

Note that the WebRTC release notes only cover WebRTC specific changes. Build, test and trivial code changes are not included. Follow the Chromium and Chrome releases blog for further updates on important changes in Chrome releases.

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

Features and Bugfixes

Type	Issue	Description	Component
Bug	http://crbug.com/1122844	Enable bugprone-use-after-move clang-tidy check	Internals>Core
Feature	http://crbug.com/1251096	YUV444 support for H.264 WebRTC streams	Blink>WebRTC>Video,Internals>Media
Bug	http://bugs.webrtc.org/11121	Change default SdpSemantics to kUnifiedPlan and make Plan B [deprecated]	PeerConnection
Bug	http://bugs.webrtc.org/12222	Default enable send side bandwidth estimation for audio	Audio,BWE
Bug	http://bugs.webrtc.org/12269	Investigate AB-test result of refactoring InterArrivalDelta	BWE
Bug	http://bugs.webrtc.org/13383	WebRTC stack unwind on Android ARM64 doesn't work with the latest Chromium Roll	Build
Bug	http://bugs.webrtc.org/13503	OSAtomicCompareAndSwap32Barrier flagged as deprecated in Xcode 13 builds	Build
Bug	http://bugs.webrtc.org/13548	stats expose qualitylimitationdurations as milliseconds, violating spec	Stats
Bug	http://bugs.webrtc.org/13555	Replace RTC_DISALLOW_COPY_AND_ASSIGN with =delete versions	Cleanup
Bug	http://bugs.webrtc.org/13565	rtc_media_unittests failing	Audio
Bug	http://bugs.webrtc.org/13571	Update WebRTC desktop_capture to accept int64_t display ids for ChromeOS	DesktopCapture
Feature	http://bugs.webrtc.org/13572	Switch encoder if init failed	Video
Bug	http://bugs.webrtc.org/13582	Remove rtc::Thread's non-TaskQueueBase versions of PostTask and PostDelayedTask.	Cleanup
Bug	http://bugs.webrtc.org/13583	TaskQueueBase: Add PostDelayedHighPrecisionTask()	Perf
Feature	http://bugs.webrtc.org/13585	allow embedding applications to start/stop event tracing	Perf,Stats
Bug	http://bugs.webrtc.org/6625	Remove code for RTP data channels	PeerConnection
Bug	http://bugs.webrtc.org/9534	PeerConnectionInterface::RemoveTrack should return RTCError	PeerConnection
Bug	http://bugs.webrtc.org/9734	Potential bad performance with simulcast screensharing	Video
Bug	http://crbug.com/1287978	Regression: Extension API for screen-sharing throws up new dialog	Blink>GetDisplayMedia
Bug	http://crbug.com/1281399	Fix rare deadlock in WebRtcTimer/MetronomeSource	Blink>WebRTC>PeerConnection
Bug	http://crbug.com/1280213	WebRTCGpuMemoryBufferReadback not working when input frame has alpha	Blink>WebRTC>Video
Bug	http://crbug.com/1279214	Corrupt WebRTC video from VP9 hardware decoder on Intel/Windows	Blink>WebRTC>Video,Internals>Media>Codecs
Bug	http://crbug.com/1278792	Focus the captured tab for getDisplayMedia, if a change of capture sources fails.	Blink>GetDisplayMedia
Bug	http://crbug.com/1278321	`Cannot find namespace 'mojo'.` while running typescript	Blink>GetUserMedia,Build,UI>Browser>WebUI
Bug	http://crbug.com/1278262	DCHECK failed in blink::WebRtcVideoFrameAdapter::SharedResources::~SharedResources with WebRTCGpuMemoryBufferReadback	Blink>WebRTC>Video,Internals>Media>Video
Bug	http://crbug.com/1277945	PendingAccessRequest should not cache a pointer to Extension	Blink>GetDisplayMedia
Bug	http://crbug.com/1275617	Media devices DeviceIDs get invalidated regularly, without firing a changeevent, when BrowsingDataLifetime policy is configured	Blink>GetUserMedia
Bug	http://crbug.com/1272852	VideoFrame from canvas with alpha:discard is incorrectly cropped when RTCRtpEncodingParameters.scaleResolutionDownBy is set and WebRTCGpuMemoryBufferReadback is enabled	Blink>WebRTC>PeerConnection
Bug	http://crbug.com/1254269	Propagate camera system permissions errors for getUserMedia on Windows	Blink>GetUserMedia
Bug	http://crbug.com/1239207	Video in an iframe played without sound	Blink>WebRTC>Audio