# Peer connection failed

**URL:** <https://community.wowza.com/t/peer-connection-failed/97427>\
**Category:** Wowza Streaming Engine\
**Tags:** webrtc\
**Created:** [July 25, 2024, 3:26pm UTC](https://community.wowza.com/t/peer-connection-failed/97427 "2024-07-25T15:26:20Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Dean\_Turner](https://avatars.discourse-cdn.com/v4/letter/d/e480ec/32.png) [@Dean\_Turner](https://community.wowza.com/u/Dean_Turner)\
**Post date:** [July 25, 2024, 3:26pm UTC](https://community.wowza.com/t/peer-connection-failed/97427/1 "2024-07-25T15:26:20Z")

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The latest chrome build Version 127.0.6533.73 (Official Build) (64-bit) has broken WebRTC

Across all servers, our custom code even the [https://www.wowza.com/developer/webrtc/dev-view-publish](https://www.wowza.com/developer/webrtc/dev-view-publish) reports the same error.

Error: Failed to execute ‘setLocalDescription’ on ‘RTCPeerConnection’: Failed to parse SessionDescription. Failed to parse codecs correctly.

Currently unable to fix this.

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<div class="post-metadata">

**Author:** ![Dean\_Turner](https://avatars.discourse-cdn.com/v4/letter/d/e480ec/32.png) [@Dean\_Turner](https://community.wowza.com/u/Dean_Turner)\
**Post date:** [July 25, 2024, 7:37pm UTC](https://community.wowza.com/t/peer-connection-failed/97427/2 "2024-07-25T19:37:28Z")

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if anyone comes across this in the meantime, the issue seems to be with the mungeSDPPublish function from the wowza webrtc-examples, commenting that out at least stops the peer connection failed error and creates a stream

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<div class="post-metadata">

**Author:** ![MICHITOSHI\_KATAOKA](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/michitoshi_kataoka/32/1428_2.png) [@MICHITOSHI\_KATAOKA](https://community.wowza.com/u/MICHITOSHI_KATAOKA)\
**Post date:** [July 25, 2024, 10:02pm UTC](https://community.wowza.com/t/peer-connection-failed/97427/3 "2024-07-25T22:02:10Z")

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Checking  
chrome://webrtc-internals/ with Chrome 127 and 128 beta

It seems setLocalDescription created by wowza sample code of mungeSDPPublish, does not have any  
a=rtpmap  
line in video section.

Also, createOfferOnSuccess at chrome://webrtc-internals shows, H.264 options but profile-level-id is different than Chrome 126.  
42001f → 42002a  
42e01f → 42e02a  
4d001f → 4d002a  
64001f → 64002a

 ![scsh-webrtc-internal](https://us1.discourse-cdn.com/flex002/uploads/wowza1/original/2X/d/d1ecc244fbc2eb3ecc3162f41e11eb19156bba49.png)

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<div class="post-metadata">

**Author:** ![Bernd\_Backhaus1](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/bernd_backhaus1/32/1328_2.png) [@Bernd\_Backhaus1](https://community.wowza.com/u/Bernd_Backhaus1)\
**Post date:** [July 26, 2024, 1:17pm UTC](https://community.wowza.com/t/peer-connection-failed/97427/4 "2024-07-26T13:17:21Z")

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@anyone here, thank you for the reports and your valuable input. We are aware of the issue and investigating, please follow

> **[Incident with Wowza WebRTC Publishing Page - Failing on Chrome Browser...](https://status.wowza.com/clz2kdat3244008iboeemdk78bv)**
>
> Incident with Wowza WebRTC Publishing Page - Failing on Chrome Browser Version 127.0.6533.73 - Incident details - Follow the link for more details.

for updates.

Thank you!

Regards,  
Bernd Backhaus  
Wowza Support  
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