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Message: <blockquote data-quote="ziphnor" data-source="post: 75793" data-attributes="member: 14215">The moving average length is going to be a user adjustable parameter(and i actually though it was 1 second since i was expecting the 50 interlaced fps to become 25 progressive frames). But you are right, its probably too short, when we get a working implementation we can test for some good default parameters.I do however think that most very dark scenes will be caught by the sanity check on the format, especially black frames with end titles etc. Furthermore the reaction to the moving average needs to be fast for expanding bounds and slow for shrinking bounds. Im not 100% what the best way for doing that is. I would like to get the cropping working though, i think ill use a little more time to see if i can figure it out based on tourettes input and some old code i found in the newsgroups.</blockquote>