[Bug 758717] New: bayer: pixel aspect ratio not forwarded when transforming caps

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=758717

            Bug ID: 758717
           Summary: bayer: pixel aspect ratio not forwarded when
                    transforming caps
    Classification: Platform
           Product: GStreamer
           Version: git master
                OS: All
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: joanpau.beltran at socib.cat
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Negotiation errors may arise when bayer elements are present in the pipeline,
because they do not forward the pixel aspect ratio when transforming the caps:

    # Failure due to the combination of `bayer2rgb` and `videoscale`:
    gst-launch-1.0 -v \
      videotestsrc \
      ! "video/x-bayer,format=rggb,width=1280,height=960,framerate=15/2" \
      ! bayer2rgb \
      ! videoscale \
      ! "video/x-raw,framerate=15/2,width=640,pixel-aspect-ratio=1/1" \
      ! ximagesink

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