# WebRTC through Wowza on iOS makes the video freeze

**URL:** <https://community.wowza.com/t/webrtc-through-wowza-on-ios-makes-the-video-freeze/51115>\
**Category:** Wowza Streaming Engine\
**Tags:** webrtc\
**Created:** [April 10, 2018, 2:35pm UTC](https://community.wowza.com/t/webrtc-through-wowza-on-ios-makes-the-video-freeze/51115 "2018-04-10T14:35:52Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Jim\_Grimshaw](https://avatars.discourse-cdn.com/v4/letter/j/b5a626/32.png) [@Jim\_Grimshaw](https://community.wowza.com/u/Jim_Grimshaw)\
**Post date:** [April 10, 2018, 2:35pm UTC](https://community.wowza.com/t/webrtc-through-wowza-on-ios-makes-the-video-freeze/51115/1 "2018-04-10T14:35:52Z")

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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](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.

I also filed this bug with Webkit: [https://bugs.webkit.org/show\_bug.cgi?id=175014](https://bugs.webkit.org/show_bug.cgi?id=175014)

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**Author:** ![Derek\_Escue](https://avatars.discourse-cdn.com/v4/letter/d/34f0e0/32.png) [@Derek\_Escue](https://community.wowza.com/u/Derek_Escue)\
**Post date:** [June 27, 2019, 8:54pm UTC](https://community.wowza.com/t/webrtc-through-wowza-on-ios-makes-the-video-freeze/51115/2 "2019-06-27T20:54:00Z")

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do you have playsinline in your video tag?

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**Author:** ![Jim\_Grimshaw](https://avatars.discourse-cdn.com/v4/letter/j/b5a626/32.png) [@Jim\_Grimshaw](https://community.wowza.com/u/Jim_Grimshaw)\
**Post date:** [June 28, 2019, 8:23am UTC](https://community.wowza.com/t/webrtc-through-wowza-on-ios-makes-the-video-freeze/51115/3 "2019-06-28T08:23:11Z")

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Hey Derek,

Tnx for the reply, the issue I had above seamed to be fixed since iOS 12.

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**Author:** ![Rose\_Power-Wowza\_Com](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/rose_power-wowza_com/32/431_2.png) [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)\
**Post date:** [June 28, 2019, 4:43pm UTC](https://community.wowza.com/t/webrtc-through-wowza-on-ios-makes-the-video-freeze/51115/4 "2019-06-28T16:43:30Z")

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Thank you very much for updating this post.