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get average hsl value from multiple frames

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get average hsl value from multiple frames
by Pierre-Alexis Tremblay on Jun 30, 2009 at 7:38:40 pm

I'm not sure how to put this...
How to set the opacity of a layer based on the average brightness of the underlying layer which is let's say a movie clip but I need this value to be constant, so the value would be a combination of an average from the image area and from the time range (?)

P.A.T.


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