AdditiveKeyerPro TL

Author: Tony Lyons - https://www.CompositingMentor.com

Additive Keyer pro does an additive key, which finds the highs and lows from the difference of a cleanplate and the original greenscreen plate and lightens / darkens the BG image. This process is handy for capturing subtle details in edges, such as hair and motionblur.

There are many additivekeyers, but this one has some unique features:

1. The light values have a plus and BG mult slider, giving you more control over highlights
2. The dark values uses a divide/multiply technique on the bg, preventing negative values
3. Option to keep some saturation from the original colors, with a screen color picker to help remove green/blue spill from the edges if you choose to keep saturation.
4. Options to output the difference to RGB, and difference matte to alpha, to use other comp techniques

Inputs:

• FG - Foreground plate

• Clean - Clean plate

• BG - Background plate

• Result - Final composite output