MaskTools/Invert
From Avisynth wiki
Invert (clip[, int "offX"[, int "offY"[, int "w"[, int "h"]]]])
Plugin: MaskTools
This filter replaces the pixel's value by 255-pixel's value.
Binarize(upper=false) could be seen (but isn't processed as) as Invert().Binarize(upper=true).
Note: This filter is de-activated in latest version of MaskTools, since it has the same name and functionality as the standard Invert AviSynth filter.
Back to MaskTools.