[Webkit-unassigned] [Bug 235713] New: Acquiring stream from one microphone breaks all previous streams from another microphones

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=235713

            Bug ID: 235713
           Summary: Acquiring stream from one microphone breaks all
                    previous streams from another microphones
           Product: WebKit
           Version: Safari 15
          Hardware: All
                OS: All
            Status: NEW
          Severity: Critical
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ivan.zahrodskyi at enghouse.com
                CC: youennf at gmail.com

I want to get several audio MediaStreams from different mics, but getting new stream breaks previous.
To reproduce this we need machine with 2 microphones connected.



Steps:
1) get stream from first microphone (str1)
2) attach this stream to some audio node (or put to peer connection)
3) get another stream from second microphone (str2)

actual result:
observe that str1 now starts playing audio from second microphone


some code example to try this

//******************************//
//get all available microphones 
let devices = await navigator.mediaDevices.enumerateDevices();
let microphones = devices.filter(d => d.kind === 'audioinput');

//get audio from first microphone
let str1 = await navigator.mediaDevices.getUserMedia({audio: {deviceId: microphones[0].deviceId}});

//play first stream
let audio = new Audio();
audio.srcObject = str1;
audio.play();

//get audio from second microphone
let str2 = await navigator.mediaDevices.getUserMedia({audio: {deviceId: microphones[1].deviceId}});

//observe that audio now starts playing audio from second microphone (not from str1)

//******************************//

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