mediasoup 3.5.2 enables RTP MID extension in RTP sent by mediasoup to remote consumers. This is an improvement that may eventually become mandatory in the WebRTC specification (it’s already mandatory in fact).
For more information about this topic, read the corresponding discussion and encountered problems that motivated this feature: https://github.com/versatica/mediasoup/issues/360
This addition should also fix some “no audio” issues that some users are experimenting in the last weeks. (which is an issue related to Chrome/libwebrtc, and not to mediasoup, but anyway).
If you are using mediasoup-client in your application, you MUST upgrade it also to 3.5.2 or a more modern version. Otherwise things won’t work.