[Bug 696100] New: videoconvert/videoscale: broken conversion for interlaced Y41B

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=696100
  GStreamer | gst-plugins-base | git

           Summary: videoconvert/videoscale: broken conversion for
                    interlaced Y41B
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: NEW
          Severity: blocker
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: ds at schleef.org
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


I broke conversion for 4:1:1 to 4:2:2 for interlaced video in the following
commit:

commit fe71cfcaaf624b8efd9d4e189a237051603fd012
Author: David Schleef <ds at schleef.org>
Date:   Fri Mar 8 14:49:31 2013 -0800

    videoconvert: prevent bad interlaced conversions

    Don't allow conversion that changes vertical subsampling if video
    is interlaced.

I'm working on fixing this soonish, and a few other minor issues for interlaced
video in videoconvert and videoscale.  But before any releases, those patches
should land (preferred), or this commit should be reverted.

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