QSV: don't use AVBR rate control.

User testing shows it's unreliable, and VBR works just as well for that purpose.



git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5749 b64f7644-9d1e-0410-96f1-a4d463321fa5
Fix display size when anamorphic is disabled.

Some interfaces set the PAR width/height to be the same as the input's, even when anamorphic is disabled.



git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5750 b64f7644-9d1e-0410-96f1-a4d463321fa5