https://bugs.freedesktop.org/show_bug.cgi?id=111236
--- Comment #9 from Julien Isorce julien.isorce@gmail.com --- Hi Michel, nice catch!
Instead of using totem which has other issues can you try:
gst-launch-1.0 filesrc location=test.mp4 ! qtdemux ! h264parse ! vaapih264dec ! vaapipostproc ! videoconvert ! ximagesink
(with and without vaapipostproc)
Thx!