[Bug 722345] directfb: video sink crashes when used with ext_surface

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=722345
  GStreamer | gst-plugins-bad | 1.2.2

--- Comment #25 from Eric <etrousset at awox.com> 2014-01-20 11:20:30 UTC ---
I find the source of my blinking, it looks like at first, two buffers are
allocated. Initially I had blink because the two buffers where linked to the
same DFB surface (the initial back buffer). So I flipped my Surface so that
each buffer allocation is linked to the respective surface buffer

But when I change the scaling of the video, the two buffer are released, and
only 1 is created. the video is blinking again cause only 1 surface buffer is
written! Any idea why?

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