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Forums Adobe After Effects Expressions Use Expression to Define “Take Matte From Layer” with “Set Matte” Effect

  • Use Expression to Define “Take Matte From Layer” with “Set Matte” Effect

  • Adam Haas

    April 29, 2019 at 9:17 pm

    I have a bunch of shape objects that have text appear within them. The animation is all expression based and I can duplicate them with ease, but I have to change the set matte for each one.

    I thought it would be cool if I could do an index+1 like I’m doing with everything else, so I can keep copying and pasting without having to do any additional customization. Is this possible? I noticed that there is no stopwatch for this attribute within the effect.

  • Filip Vandueren

    May 1, 2019 at 12:36 pm

    Not possible with expressions, they can only act as a calculation in lieu of, or on top of, keyframes.
    Non keyframeable parameter -> no expressions ☹

    but since you mention they all link to a specific layer right next to it, not all to the same layer, are track mattes not an option ?

  • Adam Haas

    May 3, 2019 at 10:55 pm

    I want the shape visible and the text animating only within that shape. Not sure if that’s something trackmattes can do. I’ll play around with it.

  • Roei Tzoref

    April 16, 2020 at 8:12 am

    if you duplicate with Ctrl+D – you won’t lose your matte option. copy paste unfortunately resets the matte option to default.

    Roei Tzoref
    2D/VFX Generalist & Instructor
    ♫ AeBlues Tutorials ♫

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