[Bug 781759] New: visualizations fail with vaapi

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=781759

            Bug ID: 781759
           Summary: visualizations fail with vaapi
    Classification: Platform
           Product: GStreamer
           Version: 1.10.4
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gstreamer-vaapi
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: jussi.kukkonen at intel.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
                CC: bsreerenj at gmail.com, vjaquez at igalia.com
     GNOME version: ---

Created attachment 350452
  --> https://bugzilla.gnome.org/attachment.cgi?id=350452&action=edit
GST_DEBUG=vaapi:5,vaapisink:5 gst-launch-1.0 audiotestsrc ! goom ! videoconvert
! vaapisink

"gtk-play" from gst-player fails to play any audio files with vaapi installed
because playbins autovideosink picks vaapisink as the sink and then
visualizations fail and that makes the audio playback fail as well. I'm
assuming the autovideosink decision to use vaapisink is reasonable so filed
this bug on vaapi...

This seems to trigger the same issue:
    gst-launch-1.0 audiotestsrc ! goom ! videoconvert ! vaapisink

The same command with ximagesink or xvimagesink works. With vaapi I get a bunch
of criticals like "gst_video_calculate_display_ratio: assertion 'num > 0'
failed" and then a internal data stream error.

The issue seems to be a video pixel-aspect-ratio "0/1" (which I don't see with
other sinks).

Versions:
 * gstreamer & gstreamer-vaapi 1.10.4
 * libva and va-intel-driver 1.7.3
Hardware is a skylake NUC.

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