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Activity Forums Adobe After Effects Animating within a mask??

  • Animating within a mask??

    Posted by Jon Kuritz on February 11, 2007 at 9:50 am

    Ok, this is going to be hard to explain but i’ll do my best. I have a picture I took of a friend of mine and its a portrait and he has sunglasses on. In the picture the sky is behind him and the sunset is in his sunglasses. I have added a mask to one layer in the sunglasses and have added some moving clouds so it looks like the sky is moving in his glasses. I have another layer under the cloudss at a low opacity to keep the shiny glare look in the sunglasses. Now here’s where the problem arises, I want to animate some clouds moving in the sky behind him, but i cant figure out which layer to mask or what.. If i mask the glasses and the sky in the same layer the clouds just pass through and it looks retarted. My goal is to have the clouds in the sky to move the opposite driection then the clouds in the glasses, but when i try to add another layer it gets all messed up. Is there a way to set an image to only appear inside the mask of another layer or image???

    I dont know what else to try. If anyone understands what im trying to do and thinks they can help I would really appreciate it. Thank you

    Jon Kuritz replied 19 years, 3 months ago 3 Members · 3 Replies
  • 3 Replies
  • Mylenium

    February 11, 2007 at 4:00 pm

    Copy the masks to a solid and use this solid as a matte on top of whatever layer you like.

    Mylenium

    [Pour Myl

  • Aharon Rabinowitz

    February 11, 2007 at 4:53 pm

    There are a couple of ways you can do this – one of which , as mylennium says uses mattes.

    So in that case, you’d set it up as follows”

    Layer 1: Solid layer with glasses shaped mask
    Layer 2: glasses reflection (using above layer as an alpha matte)
    Layer 3: Solid layer with Background cut-out shaped Mask
    Layer 4: Clouds footage (using above layer as an alpha matte)
    Layer 5: Picture of your friend

    Oh, and of course anything else like your glasses glare goes on top of all of that…

    Another way you could do it, is put those masks on the footage themselves, so:

    Layer 1: Glasses reflection with mask to cut out shape
    Layer 2: Picture of Your friend, with a mask cutting out the BG
    Layer 3: Clouds BG

    Anf again, your glare layer goes on top of that.

    There are even other ways to do this, with layers in different orders, but this should do you fine.

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  • Jon Kuritz

    February 11, 2007 at 7:12 pm

    alright i will try those ideas. thanx a lot!

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