[Webkit-unassigned] [Bug 281978] New: Disabling echoCancellation in getUserMedia request results in left channel audio only

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=281978

            Bug ID: 281978
           Summary: Disabling echoCancellation in getUserMedia request
                    results in left channel audio only
           Product: WebKit
           Version: Safari 17
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: firstcontact at jaycharles.net
                CC: youennf at gmail.com

When adding echoCanellation:false to audio constraints for getUserMedia to capture a mono audio device, the returned mediaStreamTrack is stereo but has left channel audio only. Enabling AEC against the same device results in 2 channel audio. 

Same against Safari iOS/17.6.1 and Safari 18.0/MacOS 15.0

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