It's strange that the MaskTool-filter doesn't seem to work... after all the yv12lutxy-thingy is contained in it... maybe a typo in the path? I happen to put typos into my scripts all the time, wondering why they don't work.
Oh, and could I get another one of your captures to play with? A brighter one? The Vader/Leia-scene would do fine again...
@Karyudo:
I think you've gone a little too far with the sharpening of the face-image... it's got some "painted" looking areas. (especially in the out-of-focus areas)