You could use any paint pr


You could use any paint program to manually create a static matte, which your video editor would then use to determine which part of the video image was transparent. Most video editors would be able to use such a matte (but you’ll have to read the instructions to see how to use mattes with YOUR editor). But the nice thing about chromakey is that it creates DYNAMIC mattes, also called TRAVELING mattes. So, as your actor walks along in front of the green screen, a new matte is being calculated for each frame. If you were really into self-punishment, I suppose you could manually create a matte for each frame, but OH, THE TIME THAT WOULD TAKE!!!! 😯

Another technique that’s been around since the early days of TV is Luminence Key, which creates a matte based on the subject brightness. It sort of works, but I would recommend ChromaKey first. πŸ™‚

Ken Hull

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