[Mesa-dev] [Bug 94381] VC-1 VDPAU decoding on radeon causes occasional garbage

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94381

            Bug ID: 94381
           Summary: VC-1 VDPAU decoding on radeon causes occasional
                    garbage
           Product: Mesa
           Version: 11.0
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Mesa core
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: fluendo-tech at fluendo.com
        QA Contact: mesa-dev at lists.freedesktop.org

Created attachment 122093
  --> https://bugs.freedesktop.org/attachment.cgi?id=122093&action=edit
Example of the garbage with the video "Test_1440x576_WVC1_6Mbps.wmv"

Playing WVC1 encoded videos with VDPAU hardware acceleration in a Radeon
platform causes the playback to show a lot of garbage.
This happens occasionally: sometimes it works perfectly and sometimes it shows
the garbage.
It happens with videos encoded in either simple, main or advanced.

This thread in the mailing list talks about the same behaviour, but we couldn't
find a bug reported about this, and this happens to advanced profile too:
https://lists.freedesktop.org/archives/mesa-dev/2015-September/095144.html

Testing with the same videos in the thread:
http://samples.ffmpeg.org/V-codecs/WVC1/Test_1440x576_WVC1_6Mbps.wmv
http://samples.ffmpeg.org/asf-wmv/asf_with_chapters.wmv

We reproduce this with the command found in the mailing list:
mpv --hwdec=vdpau --vo=vdpau
And with a gstreamer pipeline using the Fluendo video acceleration codec:
gst-launch-0.10 playbin2 uri=file://[...]

Both ways reproduce the same garbage, when it happens.

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