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Activity Forums Adobe After Effects Layer b/w image masks

  • Layer b/w image masks

    Posted by Tonio Queria on October 12, 2007 at 8:19 am

    I want to use bitmap b/w footages as masks where only the black shows another footage (animated texture) and use five of them on top of each other so that they all show at the same time (non is masking out the others). Is there any way to do that in one layer stack or do I have to create independant comps that I gather in a final composition? Thank you

    Kevin Camp replied 18 years, 7 months ago 2 Members · 1 Reply
  • 1 Reply
  • Kevin Camp

    October 12, 2007 at 1:38 pm

    you could duplicate your footage that is being masked 5 times, then distribute the 5 bitmaps that will be used as masks, one on top of each duplicate footage. then each duplicate footage to use the bitmap above it as a track matte ‘luma matte inverted’. i think that should do what you are asking.

    so you timeline structure would look a bit like this:

    bitmap1
    footage — luma inverted matte ‘bitmap1’
    bitmap2
    footage — luma inverted matte ‘bitmap2’
    bitmap3
    footage — luma inverted matte ‘bitmap3’
    bitmap4
    footage — luma inverted matte ‘bitmap4’
    bitmap5
    footage — luma inverted matte ‘bitmap5’

    Kevin Camp
    Designer – KCPQ, KMYQ & KRCW

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