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Istock Alpha in AE

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Andrea MandarinoIstock Alpha in AE
by on Feb 5, 2010 at 4:31:01 pm

I just purchased a video from istock of a revealing red curtain containing the alpha channel. How do I get the red curtain to reveal the image below???? So confused! Please help!

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Dave LaRondeRe: Istock Alpha in AE
by on Feb 5, 2010 at 4:42:47 pm

Did you interpret the footage with the proper alpha channel? Look in AE Help under interpret footage, or use the AE Help search function.

Does it even POSSESS and alpha channel at the moment? Put the footage in its own comp -- nothing else in it -- then look at the switches at the bottom of the comp window. You can turn on the familiar Photoshop checkerboard which indicates transparency, or you can use the three-color switch to view the alpha channel.

Did you also need to get the Matte footage for this video? You'd better check that, too.

So there's your assignment for the day.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA

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