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Activity Forums Adobe After Effects “Flop” a mask

  • “Flop” a mask

    Posted by Scott Witthaus on July 21, 2015 at 5:23 pm

    Me again.

    I am putting a couple interview clips in my composition. I needed to “flop” one and then created a mask to cut him out of the scene. Created the mask, but when I finished, the cutout went back to the “un-flopped” side rather than over my subject. Is there a way to make the mask “honor” the flop effect? Thanks in advance.

    Scott

    Scott Witthaus replied 10 years, 9 months ago 2 Members · 2 Replies
  • 2 Replies
  • Richard Herd

    July 21, 2015 at 5:38 pm

    Render order: SMET

    Source
    Mask
    Effects
    Transform

    [Scott Witthaus] “Created the mask, but when I finished, the cutout went back to the “un-flopped” side rather than over my subject. Is there a way to make the mask “honor” the flop effect?”

    The flop effect is 3rd in the stack, but Mask is second. It renders the mask first and then the flop effect (or lower if you used y value).

    This is where PreComposing is important. It allows you to turn everything into a SOURCE, which means it’s first in the render stack. Try precomposing your mask layer. And then apply the flop effect there, on the pre comp.

  • Scott Witthaus

    July 21, 2015 at 5:39 pm

    (dope-slap to forehead)

    That makes perfect sense. Thank you.

    Scott Witthaus
    Senior Editor/Post Production Supervisor
    1708 Inc./Editorial
    Professor, VCU Brandcenter

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