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Tech Note: Compatibility issue between Chrome 89 and Pixel Streaming

Mar 10, 2021.Knowledge

Description:
Changes introduced in Chrome 89 result in SDP packets that are not compatible with the WebRTCPlayer configuration included in version 4.26.1 and earlier.

Potential Impact:
[Critical]: Users running Chrome 89 won’t be able to establish a connection to a Pixel Streaming app.

Solution:
Add the following code at line 29 of webRtcPlayer.js

this.cfg.offerExtmapAllowMixed = false;

UE VERSION

4.25, 4.24, 4.23, 4.22, 4.21, 4.26