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Activity Forums Adobe After Effects Invert Alpha Channel ?

  • Invert Alpha Channel ?

    Posted by Bernhard Rieder on November 24, 2007 at 11:34 pm

    Hello friends !

    I do have an alpha channel I would like to invert…
    ups… well, can’t find the option, searched in the help file and book, and couldn’t find the answer….

    thx for every little help

    Todd Kopriva replied 18 years, 5 months ago 3 Members · 2 Replies
  • 2 Replies
  • Darby Edelen

    November 25, 2007 at 6:00 am

    Effect > Channel > Invert.

    Darby Edelen
    Designer
    Left Coast Digital
    Santa Cruz, CA

  • Todd Kopriva

    November 26, 2007 at 5:16 pm

    I searched for “invert alpha” and found this in Help:

    “1. In the Project panel, select a footage item.
    2. Choose File > Interpret Footage > Main.
    3. If you want to switch the opaque and transparent areas of the image, select Invert Alpha.”

    “Specify alpha channel interpretation”

    and this (which Darby mentioned):

    “Invert effect”

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