How to record local and remote streams in a video conference using WebRTC - Laravel?

Question

I am currently on a Laravel project that can 1:1 or 1:8 video & chatting. The video conferencing is works perfectly using WebRTC, now I want to record the audio only of the entire conference.

I tried MediaStreamRecorder but it only record the local audio.

var webrtc = new SimpleWebRTC({
    url: turnserver,
    localVideoEl: 'localVideo',
    remoteVideosEl: '', // I created custom remoteVideos
    nick: {
      // stuffs
    },
    autoRequestMedia: true,
});

And lastly, I want to save it my server via AJAX.

Cheers