Bug 184648

Summary:	Video freezes when using webRTC wowza <-> iOS safari
Product:	WebKit	Reporter:	tom.cuypers <tom.cuypers>
Component:	WebRTC	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED DUPLICATE
Severity:	Major	CC:	eric.carlson, youennf
Priority:	P2	Keywords:	InRadar
Version:	Safari 11
Hardware:	iPhone / iPad
OS:	iOS 11

Description tom.cuypers@kiswe.com 2018-04-16 06:39:29 PDT

When going peer to peer with the appr.tc example everything seams to work well. However, my current setup is Chrome <-> Wowza <-> iOS Safari. The video freezes in the safari webbrowser after some time. On that iOS device I can still hear the audio, but the video is frozen. On the Chrome side I can both see and hear the other side. So in Wowza, all streams are ok.

If I run the same setup with Chrome <-> Wowza <-> Desktop Safari or Chrome <-> Wowza <-> Chrome (Desktop or Android) I don't see this issue. So it looks like a iOS Safari issue.

It also appears to trigger this freeze bug more easily when there is a lot of movement in the video, eg when the resolution changes due to limited bandwidth or maybe other h264 parameters. 

I tried this with both UDP and TCP and give the same results.

I also tried different css styles in the hope to have it rendered differently as described here: https://bugs.webkit.org/show_bug.cgi?id=176439

I am using h264 with profile id 42e01f, to be the same as appr.tc and Tried to run the chrome side on Windows, Ubuntu and Mac, all with the same results.

Comment 1 youenn fablet 2018-04-16 08:44:37 PDT

Thanks Tom,
We are working on it.
We are tracking this one in https://bugs.webkit.org/show_bug.cgi?id=175014 so I will make this report a duplicate of the other one.

*** This bug has been marked as a duplicate of bug 175014 ***

Comment 2 tom.cuypers@kiswe.com 2018-04-17 00:41:33 PDT

Youenn,

Thank you for the response. You can mail me if you need a setup to debug with.

Regards,
Tom

Comment 3 Radar WebKit Bug Importer 2018-04-17 17:45:06 PDT

<rdar://problem/39512016>