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Very Basic Question
Hi,
I have a video that I want to colour key, but I’d like the keying calculations to be done on only part of the video. So let’s say I have a video with two green areas, one on the left and the other on the right of the shot. Can I get After Effects to apply the keying calculations to only the right half of the video?
In general, can I choose which area of the video to apply any given effect to, rather than to the whole scene?
Thanks for any help,
Mitch.