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  1. Qt
  2. QTBUG-121542

Video playback with QtMultimedia stutters when using d3d11 backend, WindowsMediaFoundation, and having an animation on the scene.

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    • Icon: Bug Bug
    • Resolution: Won't Do
    • Icon: P3: Somewhat important P3: Somewhat important
    • None
    • 6.5.2, 6.5.3, 6.5.4, 6.6.1
    • Multimedia
    • Windows
    • c28ff07a9 (dev), dbc1482d3 (6.8), 64d572c84 (tqtc/lts-6.5), 647e00c8a (dev), 380d94b29 (6.10), cbb79278f (6.9), 1ddf34034 (tqtc/lts-6.8)

      Video playback with QtMultimedia stutters in the following configuration:

      • QSG_RHI_BACKEND = d3d11.
      • Using WindowsMediaFoundation.
      • Having an animation on the scene.

      To reproduce the issue, follow the steps bellow:

      Manually delete the ffmpeg plugins from Qt installation folder ( in order to force the windowsmediafoundation plugin loading). The ffmpeg plugins are found in the following path C:\<Qt installation path>\<Qt affected version>\msvc2019_64\plugins\multimedia.

      Run the example project attached to this bug report.

      Click on the Main Window.

       

       

        

       

       

        1. VideoStuttering.zip
          3.63 MB
          Mehdi Belila
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            johanseg Jøger Hansegård
            mahdi.belila Mehdi Belila
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              Created:
              Updated:
              Resolved:

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