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I think there is a volume parameter in webrtc but I also think you need to be connected to utilize it. However flutter have several packages you could use to see if a microphone is working before joining a room. "Noise meter" and "record" both have that capability

I cant use either for flutter web without recording the footage 😞

Hmm then I guess you could give AudioContext a try... https://api.dart.dev/stable/3.1.3/dart-web_audio/dart-web_audio-library.html | https://developer.mozilla.org/en-US/docs/Web/API/AudioContext | might be a little bit more tricky thought.

Its strange that livekit doesent allow us to listen to trakcevents

In order to utilize the various event listeners I'm quite certain you need to be connected to a room otherwise it would be difficult (impossible?) for livekit to know whats happening and what listeners to trigger. But it shouldn't be impossible to write your own listeners to listen to changes on audio input but thats not something livekit offers (that im aware of) by using audioContext. Do you wanna make sure the microphone is working before entering a room?

Yeah im trying to make sure the mic is working

Hmm 🤔 if the record packaged is not to your liking (or not enough) then I suggest take a look at the audioContext class and Mozillas documentation on it because it looks doable. Or maybe someone from Livekit could help you with another solution.

I wonder how ill use the audioContext class in flutter code

AudioContext should be a part of dart:web_audio library according to the documentations, but as I said earlier I only looked at the documentations so you might have to do some own research on that part, or wait for a better response from Livekit.

Ah I managed to make the record package work

I guess another workaround could be to connect the user to a "staging" room that's unique for every user, then use the speaker events to determine if things are working properly.