I'm working on some Y'CbCr (really just CbCr) native image
processing algorithms stuff that's proving rather heavyweight and
complex to do in the exclusively RGB After Effects. Essentially,
what I'm trying to do is take two QuickTime files, and build a new
movie which maps the difference in saturation between the two (so
gray is equal saturation, image one more saturated than image two
would be a whiter pixel, image two more saturated than image one
would be a darker pixel). Using a whole bunch of nested comps, I can
get a difference between the two in After Effects, so different areas
show up as bright, but I'm not able to get the non absolute
difference mode like I described (I'm admittedly no After Effects whiz).
FCP5's Y'CbCr native FXScript seems like a good way to do this,
but the app doesn't seem to come with any documentation about it.
Does anyone have any:
Good FXScript resource recommendations?
Any idea how to do what I want in After Effects?
Or, any other suggestions for how to do what I'm trying to do here?
