PSA: WebRTC M81 Release Notes

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Anatoli Davidson

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Feb 28, 2020, 9:53:52 AM2/28/20
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WebRTC M81 Release Notes


WebRTC M81 branch (cut at r30432)

Summary


WebRTC M81, currently available in Chrome's beta channel, contains 3 new features and over 20 bug fixes, enhancements, and stability/performance improvements. As with previous releases, 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! 


The Chrome release schedule can be found here.

PSAs


Device IDs are not exposed by enumerateDevices if permission to use devices has not been granted

Prior to Chrome M81, the result returned by the enumerateDevices Web API contained device IDs for all devices in the system even if permissions were not granted. Starting with Chrome M81, if no permission to use devices has been granted the result of enumerateDevices will now contain at most one entry for each device type, and the deviceId field will be empty. This change may affect some existing applications, but it should be straightforward to adapt to it with minimal changes to applications. The purpose of this change is to improve user privacy and to align with the latest version of the specification. More details at https://crbug.com/1019176.

Deprecations


Issue

Description

Component

11316

Remove iceRegatherIntervalRange

Network>ICE

11165

Remove legacy desktop echo canceller code (see PSA).

Audio

Features and Bugfixes


Type

Issue

Description

Component

Feature

11218

Signal requested resolution alignment requirements from sinks to sources

Video

Feature

1037703

Do not expose IDs in enumerateDevices when permissions were not granted.

Blink>GetUserMedia

Feature

1040584

Signal “onclosing” event for Datachannel

Datachannel

Bug

11257

Don't pace audio by default

Audio

Bug

11180

A user-defined copy constructor is needed for the config struct in AudioProcessing

Audio

Bug

11193

The pre-amplifier gain is applied before the high-pass filter

Audio

Bug

11197

Potential object allocation in real-time code for the PushResampler

Audio

Bug

11241

Unnecessary overhead in reporting of statistics/metrics in APM

Audio

Bug

11235

Harmonize AudioProcessing::ProcessStream implementations (AudioFrame and StreamConfig)

Audio

Bug

11278

Log spam from RenderDelayBufferImpl

Audio

Bug

11278

Log spam from RenderDelayBufferImpl

Audio

Bug

11196

Padding may not be taking account by bandwidth estimation

BWE, Network>RTP

Bug

11015

Disabled by bw layers and streams should be counted as bw limited quality in GetStats

GetUserMedia, Video

Bug

CL

Add rtc::Thread::PostDelayedTask

Internals

Bug

11259

libevent TaskQueue can drop tasks under high load

Internals

Bug

8876

TaskQueue::PostTask may silently drop tasks

Internals

Bug

11081

[M71] Assertion in CoreAudio when microphone access is disabled system-wide in Windows 10 Desktop

Mic

Bug

11317

[Stats] fecPackets[Received/Discarded] are missing from RTCInboundRtpStreamStats::Members()

Stats

Bug

10173

[PATCH] RTCStatsReport::ToJson does not put ',' between elements

Stats

Bug

11297

GetNormalSimulcastLayers can return # TLs == 0

Video

Bug

11265

a=fmtp parameters are not propagated to codec level

Video

Bug

699036

WebRTC: dont fire events from pc.close

WebRTC


Alexander Widerberg

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Mar 26, 2020, 12:27:03 PM3/26/20
to discuss-webrtc
M81 also solves a very important issue on iOS that is not mentioned in the above release notes, 10994.
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