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Old October 26th, 2010, 02:27 AM   #1
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Cumulative Exposure Effect

Hi everyone,

I have has a request to use an existing video and average the contents of preceding frames into the current frame to give a long exposure effect. I am not sure how many frames back we need to go so it would be great if this was variable. It sounds like a fairly achieable effect and I suspect there is something available in AE already to do it but I can't find it.

Any Hints?

Thanks

Jim
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Old October 26th, 2010, 08:21 PM   #2
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Hi Jim. Have a look at the Echo effect (or Time Displacement might interest you as well).
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Old October 30th, 2010, 10:45 PM   #3
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Another possibility is to duplicate your layer several times, offset each layer by a single frame, and then set the transparency mode on each layer to Screen or Add. For a less intense effect, use less layers or turn off existing layers until you reach the desired look.
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