[Bug 797278] New: Deinterlaced content flickers heavily with glimagesink when dmabuf is enabled

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=797278

            Bug ID: 797278
           Summary: Deinterlaced content flickers heavily with glimagesink
                    when dmabuf is enabled
    Classification: Platform
           Product: GStreamer
           Version: 1.14.x
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: thean.siew.soon at intel.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

When GST_GL_PLATFORM=egl is exported for zero-copy/dmabuf usage, deinterlaced
content flicks heavily with glimagesink. 

Reproduce Steps:
============================================
$ GST_GL_PLATFORM=egl gst-launch-1.0 -v filesrc
location=/home/root/videos/H264_Main at L2.2_0720x0576_03.9Mbps_10.0fps_Interlaced_Sound_ToTheLimit@.mp4
! qtdemux ! h264parse ! vaapih264dec ! vaapipostproc deinterlace-mode=1
deinterlace-method=1 ! glimagesink


Video renders correctly if dmabuf is not enabled with the following command:
$ gst-launch-1.0 -v filesrc
location=/home/root/videos/H264_Main at L2.2_0720x0576_03.9Mbps_10.0fps_Interlaced_Sound_ToTheLimit@.mp4
! qtdemux ! h264parse ! vaapih264dec ! vaapipostproc deinterlace-mode=1
deinterlace-method=1 ! glimagesink

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