[Webkit-unassigned] [Bug 175975] New: Cannot change audio input source device

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=175975

            Bug ID: 175975
           Summary: Cannot change audio input source device
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Macintosh
               URL: https://webrtc.github.io/samples/src/content/devices/i
                    nput-output/
                OS: macOS 10.12
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media Elements
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: lee at bluejeans.com

When changing the audio input device, changes do not take effect. For example, if the initial device is the built-in microphone, after changing the input to an external USB Logitech HD Pro Webcam C920, the audio is still captured from the built-in microphone.

This is observed in BlueJeans, appear.in, and also the WebRTC sample code for device selection:
https://webrtc.github.io/samples/src/content/devices/input-output/

This was observed in the following Safari versions:
Safari 11 for macOS Sierra beta 6, Version 11.0 (12604.1.38.1.6)
Safari Technology Preview Release 38 (Safari 11.1, WebKit 12605.1.3.1)

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