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Activity Forums Adobe After Effects How to use an Alpha Map as a Mask for a different Layer ?

  • How to use an Alpha Map as a Mask for a different Layer ?

    Posted by Bernhard Rieder on November 25, 2007 at 12:38 am

    Hello friends !

    How can I use an Alpha jpg as a mask for a different layer ?

    I would like to reach an image like shown here:

    I know how to do in Photoshop, but in AE I can’t find a way.

    thx for every little help.

    Darby Edelen replied 18 years, 9 months ago 2 Members · 1 Reply
  • 1 Reply
  • Darby Edelen

    November 25, 2007 at 6:02 am

    You can use a Track Matte or use Effect > Channel > Set Matte. These will behave somewhat differently so I recommend that you look them up in AE’s help files (which, by the way, are fantastic). Pressing F1 should bring up the help.

    Darby Edelen
    Designer
    Left Coast Digital
    Santa Cruz, CA

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