Bug 172761

Summary:	Crash on resetting video.srcObject after replaceTrack
Product:	WebKit	Reporter:	Andrew Morris <andrew>
Component:	Media	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED CONFIGURATION CHANGED
Severity:	Normal	CC:	eric.carlson, jonlee, webkit-bug-importer, youennf
Priority:	P2	Keywords:	InRadar
Version:	WebKit Local Build
Hardware:	Unspecified
OS:	Unspecified

Description Andrew Morris 2017-05-31 11:09:05 PDT

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'.)

Comment 1 Andrew Morris 2017-05-31 15:01:22 PDT

Ah the jsbin expired, here's one that should last: https://output.jsbin.com/doweto

Comment 2 Radar WebKit Bug Importer 2017-05-31 15:07:45 PDT

<rdar://problem/32496861>

Comment 3 Jon Lee 2017-06-13 19:15:54 PDT

I cannot reproduce this on STP 32.