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Random frame from four synced video layers
I have four videos each on their on layer, in sync with each other.. Each video varies slightly and I want to have each composite frame show one of the corresponding video layer frames randomly.. For instance, frame 0 would show frame 0 from a random video layer (1-4), frame 1 would show frame 1 from a random video layer (1-4), etc.. How can I do this?