DifferencePlus v1.0
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8.0, 7.1, 7.0, 6.3 or later
Linux, Mac, Windows


Ideally you would never have to key using a diffence matte, but every once in a while it can be useful. This little tool I built to punch out a few shots that were all shot locked down and with a fair bit of seperation between the forground and background. I would denoise the crap out of the footage before you send it down the pipe.
Footage
Plate
Final
Basically the way it works is to add the RGB values in the footage together. And also the plate. Then subtract the Plate from the footage. You then can use sliders to keep anything that's particulary different while killing the stuff that's not so different. This is also a very fast keyer.
Any suggestions, please let me know at michael (at) itaki.com
Atlanta Georiga based compositor and VFX | www.itaki.com