[Webkit-unassigned] [Bug 191244] New: Can not get video stream with internal camera of Macbook air in safari 12

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=191244

            Bug ID: 191244
           Summary: Can not get video stream with internal camera of
                    Macbook air in safari 12
           Product: WebKit
           Version: Safari 12
          Hardware: PC
                OS: macOS 10.14
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: xpeng1984 at gmail.com
                CC: youennf at gmail.com

demo :
https://webrtc.github.io/samples/src/content/getusermedia/resolution/

Cases:
Case 1. OS : MacOs 10.14 , Browser: Safari 12  , Camera : internal Camera
        Click the QVGA button we will get the video stream, then click the VGA button , there is no video and no error information.
Case 2. OS : MacOs 10.14 , Browser: Safari 12/Chrome/Firefox  , Camera : external Camera
        It's OK with the same process as Case 1.
Case 3. OS : MacOs 10.12 , Browser: Safari 12/Chrome/Firefox   , Camera : internal Camera
        It's OK with the same process as Case 1.
Case 4. OS : MacOs 10.14 , Browser: Chrome/Firefox  , Camera : internal Camera
        It's OK with the same process as Case 1.

There is no video when change the resolution of internal camera in safari 12 in macos 10.14.

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