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easy question about alphas (I hope!)
Hi all, here is my question: I want to create a simple animation whose alpha channel is completely different than the animation. So for example, the animation might be 2 seconds of a logo animating, but the alpha is 2 seconds of a big circle fading on and off. I know how to create an alpha normally, just select ‘RGB+alpha’ in the output channels when rendering, but this twist has me stumped.
thanks for your time and help,
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3 Replies
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That’s impossible in AE. If you really need this, render separate Alphas and merge them in whatever target application you use (an editing program, I assume).
Mylenium
[Pour Myl
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How about making a grayscale movie of the circle fading, then use it as a luma matte for the logo animation in AE?
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Hi Steve, the idea is to have a finished quicktime with a alpha channel that is different. I plan to take this quicktime into another app where I need the alpha to be different than the animation. I don’t need this alpha to be used in AE so the luma matte idea wouldn’t solve the problem.
thanks for the suggestion though. Any other ideas?
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