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Alpha to mask shape

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stig olsenAlpha to mask shape
by on Nov 26, 2013 at 9:34:16 am


I have imported some images with alpha from PS into AE.
When applying a mask, the mask will not fit to the masked out area, the mask is rectangular and fit to the composition edges.
How to avoid this?

Is there any way to convert the alphas to mask shapes?


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Dave LaRondeRe: Alpha to mask shape
by on Nov 26, 2013 at 3:43:50 pm

If you don't plan to animate the masks you want to make, you don't have to even make masks. Just use the Photoshop layer as a Track Matte.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA

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Roland R. KahlenbergRe: Alpha to mask shape
by on Nov 29, 2013 at 2:33:18 pm

Look at using the Autotrace feature. You'll find it under the Layer menu.


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stig olsenRe: Alpha to mask shape
by on Nov 29, 2013 at 2:37:18 pm

Perfect, thanks!

Im used to choking and blurring the alphas, but sometimes you need a mask.


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