iOs lip sync

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Vladislav

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Sep 9, 2019, 5:28:53 AM9/9/19

to meetecho-janus

Hello everyone

I develop ios app with video call feature using this example https://github.com/stasel/WebRTC-iOS and my implementation is completely similar to the example (https://github.com/stasel/WebRTC-iOS/blob/master/WebRTC-Demo-App/Sources/Services/WebRTCClient.swift).

Always when i want switch between speaker and receiver audio output my connection increase lip sync. After many experiments i came to conclusion that in this moment microphone switches too.

If i use peer-to-peer connection then problem does not reproduce.

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What actions did i take:

1. Recording participant of video room — problem is reproduced on video

2. In chrome webrtc internals on subscriber peerConnection value of googCurrentDelayMs characteristics is increased for videotrack