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Old August 25th, 2007, 07:39 PM   #1
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Chroma keying to transparency for an alpha channel?

Chroma keying to transparency for an alpha channel?

Is there a way to chroma key to alpha? I have a clip I rendered out in Vegas that I want to take over to AE for some 3D enhancements. Some of the FX I have put on in Vegas can only be done in Vegas, so that is why I am not compositing and chroma-keying everything in AE. I need to chromakey this actor with the green background turning to an alpha channel...any ideas?
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Old August 26th, 2007, 12:57 PM   #2
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Uncompressed AVI

Render as AVI uncompressed (default) and select the "Render Alpha Channel" checkbox which will give you a (very likely large) 32 bit uncompressed AVI file.

Think there is a way to do this using Quicktime format as well, havn't tried though.

/magnus
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