[Webkit-unassigned] [Bug 236785] New: getUserMedia breaks video tag with audio

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=236785

            Bug ID: 236785
           Summary: getUserMedia breaks video tag with audio
           Product: WebKit
           Version: Safari 15
          Hardware: Unspecified
                OS: macOS 12
            Status: NEW
          Severity: Critical
          Priority: P2
         Component: Web Audio
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: francesco.durighetto at bandyer.com
                CC: cdumez at apple.com

Safari 15.3 on Monterey (not happening on Safari 15.1 and 15.4 dev preview)

Steps to reproduce:
- create a peerconnection (subscribe only) to a remote audio and video.
- create a video AND audio HTMLelements and apply as srcObj the audio + video stream just subscribed.
- set the videoHtmlElement as muted = true

observe:
- everything works as expected, I can hear remote stream from the audio tag and see the remote video in the video tag (i CANNOT hear, as expected, the audio track from the video tag since it's muted)

what breaks:
- i call getUsermedia({audio: true, video: true}) in the same page

observe:
- I now hear the remote side twice

what happened:
- the video element showing the remote stream "unmuted" itself, despite the fact that $0.muted is showing true

proof:
- set the video element to muted= false and then muted = true again and the double audio disappears.

Workaround:
- create a new mediaStream with only a track (one for video and one for audio) and assign them to the HTMLElement. But this breaks Safari 13 since MediaStreamTrack.clone() is broken :(

HALP

TLDR:
- calling getUserMedia unmute all video tags in the page

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.webkit.org/pipermail/webkit-unassigned/attachments/20220217/821f8e34/attachment.htm>