[Webkit-unassigned] [Bug 261329] New: Cloned video MediaStreamTrack has another resolution than original track

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Fri Sep 8 05:46:31 PDT 2023


https://bugs.webkit.org/show_bug.cgi?id=261329

            Bug ID: 261329
           Summary: Cloned video MediaStreamTrack has another resolution
                    than original track
           Product: WebKit
           Version: Safari 17
          Hardware: iPhone / iPad
                OS: Other
            Status: NEW
          Severity: Major
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ivan.zahrodskyi at enghouse.com
                CC: youennf at gmail.com

Created attachment 467602

  --> https://bugs.webkit.org/attachment.cgi?id=467602&action=review

cloned_track_issue_sample

Environment:
- iPadOS 17.0 (21A5326a)
- iOS 17.0


We noticed strange issue when sending cloned track via peer connection - cloned track has another resolution.

To reproduce this:
- get user media with constraints ({ video: { width: 640, height: 360 } })
- clone video track
- add this track to peer connection
Actual result: 
- track is send with resolution 960x540 (instead of 640x360)
Expected result:
- resolution should be the same as in the original track (640x360)

I create little sample to try this issue.

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