Multi language audio with WebRTC

[danrossi]

I was wondering how audio multiplexing can be used for selecting multi language audio tracks with a stream. I've been asked about it. It's in a publish/subscribe situation not conferencing. Are audio tracks supposed to be broadcasting as a seperate stream for selection ?

Update: I found this that suggests multi source is required. So a maintrack with one language audio, then another stream publishing with a seperate language audio. I'm unsure yet how to identify language codes this way or test publishing two streams from the same OBS on the same machine ? What if SRT was publishing with multiple audio tracks, SRT might make this process simpler under one publish ?

Then multiplexing is used to choose between the audio tracks somehow.

https://millicast.medium.com/its-a-party-and-everyone-is-invited-e384d5540c4a
https://docs.dolby.io/streaming-apis/docs/multisource-streams