[Webkit-unassigned] [Bug 172761] New: Crash on resetting video.srcObject after replaceTrack

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=172761

            Bug ID: 172761
           Summary: Crash on resetting video.srcObject after replaceTrack
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media Elements
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: andrew at tokbox.com

When using .replaceTrack on the RtcRtpSender, to update the local video I also used .removeTrack and .addTrack on the local stream. In Firefox I found it was sometimes necessary to do `video.srcObject = video.srcObject;` to make it display the new video properly. When I ran the same code on WebKit, it crashed.

(Note: It does work fine for me without resetting the srcObject in WebKit though.)

I created this jsbin based on the basic RTCPeerConnection webrtc sample to demonstrate the issue:

https://output.jsbin.com/qewizecate

(Click 'Start', 'Call', check 'Refresh srcObject', click 'Change Video'.)

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