Knoll Unmult !full!

"Unmult makes my white text on black turn grey." Solution: Double check your project's color management. Sometimes, if the black is not true 0,0,0, the math gets weird. Add a Levels adjustment before Unmult to crush the blacks to pure 0.

: Unlike simple "Screen" blending, Unmult "un-premultiplies" the RGB channels, restoring full saturation to the colors while correctly attenuating the alpha channel to avoid dark "fringes" around the edges. Why Use It Over Blending Modes? UnMult - aescripts.com knoll unmult

At its core, Knoll Unmult is a one-click solution for from footage or generated effects. It converts the luminance (brightness) of an image into an alpha channel (transparency). "Unmult makes my white text on black turn grey

: Essential for light leaks or lens flares where a true alpha channel is required for further compositing. Compatibility & Discontinuation Notes UnMult - aescripts.com It converts the luminance (brightness) of an image

Simply put, Unmult (short for "Un-multiply") removes black or white from a layer by reversing the math of the "Multiply" or "Screen" blend modes.

Absolutely. While After Effects has added new blending modes and improved the "Set Matte" effect, no native tool deconstructs premultiplied black backgrounds with the same mathematical elegance as Unmult.