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Activity Forums Adobe After Effects trying to make a mask with auto trace

  • trying to make a mask with auto trace

    Posted by Billy Payn on August 4, 2008 at 1:49 pm

    Hi – can anyone help?
    I’m trying to make a mask on a 10 second shot of a woman lying down so that I can have her become see through with an effect inside her, without the effect being visible on the rest of the picture.
    the shot is about 10 seconds long, and I’m trying to get auto trace to make the mask.
    I’ve been able to get it to make as few as 4 masks by keying her out against a green background, the masks look pretty clean and good enough for my purposes, the thing is, they cycle, (even if I turn off the cycle colours,) so that when I copy them to a solid and play with the mask properties to get them to cut out her shape, they move around and the shape flashes in and out without any apparent reason or sense.
    Any help would be much appreciated.
    thanks
    Billy

    Billy Payn replied 17 years, 9 months ago 1 Member · 0 Replies
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