[Webkit-unassigned] [Bug 232599] New: Local and remote video goes black when foregrounded after being backgrounded.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=232599

            Bug ID: 232599
           Summary: Local and remote video goes black when foregrounded
                    after being backgrounded.
           Product: WebKit
           Version: Safari 15
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mmalavalli at twilio.com
                CC: youennf at gmail.com

Steps to reproduce:

1. Join a room in https://appr.tc/ from desktop Chrome.
2. Join the same room in iOS Safari.
3. Background iOS Safari, and play a YouTube video for a few seconds.
4. Foreground iOS Safari.

Expected behavior:

Local and remote video should resume rendering.

Actual behavior:

Local and remote video are black.

Note:

I created this codepen: https://codepen.io/manjeshbhargav-the-scripter/pen/LYjOGWg to investigate, and at least in the local video case, the video is black only if audio is also acquired. It actually resumes rendering if only video is acquired.

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