[Bug 766184] New: Video distrion with VAAPI when using tee element

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=766184

            Bug ID: 766184
           Summary: Video distrion with VAAPI when using tee element
    Classification: Platform
           Product: GStreamer
           Version: 1.8.1
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gstreamer-vaapi
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: reza at userful.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
                CC: bsreerenj at gmail.com, vjaquez at igalia.com
     GNOME version: ---

Created attachment 327529
  --> https://bugzilla.gnome.org/attachment.cgi?id=327529&action=edit
Test videos

I've been running some tests with gstreamer 1.8.1 and gstreamer-vaapi 1.8.1
using attached video and these commands :

gst-launch-1.0 filesrc location=~/Videos/perform-this-way-5-secs.flv !
decodebin ! videoconvert ! videoscale ! video/x-raw, width=1920, height=1080 !
autovideosink

gst-launch-1.0 filesrc location=~/Videos/perform-this-way-5-secs.flv !
decodebin ! tee name=t t.! queue !  videoconvert ! videoscale ! video/x-raw,
width=1920, height=1080 ! autovideosink

Once we use tee element we will have distortion in output, I've tested this
with 1080P mpeg2 videos and again if we use tee element we will have distortion
in output while 1080P H264 playback is fine. this will not happen if we use
software decoder but I'm not sure VAAPI is causing this or tee element

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