[Bug 684341] [codecparsers vc1] many vc1 stream give corruption image when gst-vaapi is used

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=684341
  GStreamer | gst-plugins-bad | git

Gwenole Beauchesne <gb.devel> changed:

           What    |Removed                     |Added
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                 CC|                            |gb.devel at gmail.com

--- Comment #2 from Gwenole Beauchesne <gb.devel at gmail.com> 2012-09-20 11:15:20 UTC ---
I believe codecparsers used to set defaults only for syntax elements when a
standard explicitly mentions so. In this case, implied values are to be handled
by either the codec layer, or the driver.

Some hardware will already handle implied values properly. Reading down the
Intel Gen specs, setting TTFRM to 0 and TTMBF to 1 is an explicit requirement
when VSTRANSFORM is 0 and long mode is used. i.e. it should be programmed this
way in the driver.

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