[Bug 781918] New: mpegvideoparse calculates wrong pixel aspect ratio

GStreamer (GNOME Bugzilla) bugzilla at gnome.org
Fri Apr 28 18:49:04 UTC 2017


https://bugzilla.gnome.org/show_bug.cgi?id=781918

            Bug ID: 781918
           Summary: mpegvideoparse calculates wrong pixel aspect ratio
    Classification: Platform
           Product: GStreamer
           Version: git master
                OS: Mac OS
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: matej.knopp at gmail.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Created attachment 350679
  --> https://bugzilla.gnome.org/attachment.cgi?id=350679&action=edit
Patch

If there is no sequence extension or sequence display extension present
gst_mpeg_video_finalise_mpeg2_sequence_header will never be called and will not
calculate proper aspect ratio.

it's safe to call gst_mpeg_video_finalise_mpeg2_sequence_header without
sequence extension, in which case it calculates aspect ratio from sequence
header width/height and DAR.

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