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Activity Forums Adobe After Effects multiple masks on one layer

  • multiple masks on one layer

    Posted by Eric Oliver on September 5, 2005 at 3:53 pm

    i’m keying out a person from a green screen. in one frame, i need to add a second mask to remove green from between his arm and his chest. the second mask doesn’t key out, though. it’s “inside” the first mask. how do i fix it?

    Michael Szalapski replied 20 years, 8 months ago 2 Members · 1 Reply
  • 1 Reply
  • Michael Szalapski

    September 5, 2005 at 7:23 pm

    Are you using masks to roto the guy rather than using Keylight or some other filter to get this guy seperated? Why use the greenscreen if you’re just going to roto?

    Anyway, if you want to add a mask inside another mask and you want them to interact differently you have to change the masks settings.
    Select your layer with the masks in the timeline and press “m, m”
    You’ll see the properties for all your masks come up in all their glory.
    Your masks should have a little drop down menu thingy that says add; make it say other things (such as, subtract) and you should be happy.

    You’d be even happier if you used keylight.

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    (The ‘Great’ stands for ‘Not So Great)

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