View Single Post
Old 18th February 2019, 22:34   #7  |  Link
wonkey_monkey
Formerly davidh*****
 
wonkey_monkey's Avatar
 
Join Date: Jan 2004
Posts: 2,493
What is your ultimate aim here? Some kind of obfuscation of clips you already have? Or are you trying to restore a clip that has already had this thing done to it?

mt_makediff, as far as I can tell, will not work properly if the difference between two pixel values is >127 or <-128, which is likely to happen when you have completely different clips. You need something that'll give X = (A-B) modulo 256. Then B = (A-X) modulo 256. (I think that's right but don't take it as definite).
__________________
My AviSynth filters / I'm the Doctor

Last edited by wonkey_monkey; 18th February 2019 at 22:38.
wonkey_monkey is offline   Reply With Quote