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  1. Qt
  2. QTBUG-68054

[Windows UWP] Crashes when calling camera.start/stop after Windows Update 1803

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Details

    • Bug
    • Resolution: Done
    • P1: Critical
    • 5.11.1
    • 5.10.1, 5.11.0 Beta 4
    • Multimedia
    • Windows 10 UWP 32/64bit with Windows Update 1803.

    Description

      After installing the latest Windows Update (1803) a crash started to happen when calling camera.start(). The crash happens in qtmultimediasrcpluginswinrtqwinrtcameracontrol.cpp

      hr = encodingProfile->get_Video(&videoProperties;);

Exception thrown: read access violation.
**encodingProfile** was nullptr.

      This is reproducible only on Windows 10 UWP platform with 32 and 64 bit, but it is not reproducible on Windows Classic. It has been tested only with MSVC2017.

      See the attached example project. Click start button to start camera and see the crash.

      Attachments

        1. crash_screenshot.PNG
          121 kB
          shobana
        2. qtbug68054.tar.gz
          2 kB
          Qt Support
        For Gerrit Dashboard: QTBUG-68054
        # Subject Branch Project Status CR V
        228200,3 WinRT: Keep camera as uninitialized when error 5.11 qt/qtmultimedia Status: MERGED +2 0
        228301,2 WinRT: Add ref to prevent seg fault 5.11 qt/qtmultimedia Status: MERGED +2 0

        Activity

          People

            valentyn.doroshchuk Valentyn Doroshchuk
            qtcomsupport Qt Support
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            Dates

              Created:
              Updated:
              Resolved:

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