I'm just wondering if it is possible to composite one video over another? Say I have two videos: video1 and video2. Video1 has a blue or green screen backdrop, and video2 does not. Is it possible to key out the blue/green screen and play it over video 2? I know it's possible to have a chroma keyed video play over a still image, but I'm wondering if the same thing can be achieved with a video background?
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