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  1. Qt
  2. QTBUG-111459

Heavy jittering in video playback if animations are active

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Details

    • Windows
    • 24cfd4a28 (dev), e63378eed (6.5), baf899700 (dev), ec331bffc (6.6), b977cfb44 (6.5), 3363496a7 (dev), a3bf450b2 (6.7), 4043d7ebc (6.6), 582bf926b (tqtc/lts-6.5), 10ba74ebc (dev), a25b5eafc (6.7), fd893ee8d (6.6), ca9a5fb53 (tqtc/lts-6.5)

    Description

      With the new ffmpeg backend, using a playbackRate > 1 causes the video to flicker heavily / jump back and forth. Values <= 1 work fine. Tested with latest beta 3 of today (23.2.2023)

      Update: This happens only if there are active animations, so this seems to be related to this issue: QTBUG-109213

      Update 2: This happens not only with playbackRate > 1 but also when playing with playbackRate of 1.

       

      Attachments

        1. 2023-02-23 16-55-08.mkv
          15.66 MB
        2. FullLog-Direct3d.txt
          3.63 MB
        3. FullLog-OpenGL.txt
          5.36 MB
        4. main.qml
          2 kB

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-111815 Bumpy rendering of D3D11 textures

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Task - A task that needs to be done. QTBUG-115308 Fix DirectX texture propagation from FFMPEG to RHI

          • Not Evaluated - Not yet evaluated/prioritized
          • Closed
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