• Adobe After Effects

  Masking

  Posted by Gary Davila on April 1, 2009 at 7:15 pm

  I have a piece of TV clip art on the top layer. Layer 2 is a picture of my son. I created a mask so that he appears in the TV. When I enlarge his picture the mask also enlarges. How do I enlarge his picture but not the mask?
  Thanks

  Stuart Elith replied 17 years, 1 month ago 4 Members · 3 Replies
• 3 Replies

• 

  Nate Hanson

  April 1, 2009 at 8:09 pm

  Sounds to me like your mask is actually on your picture layer. Put the mask on the TV layer. That way you can scale up the picture underneath, but the mask (which is essentially a hole in your TV image) will stay the same size as the TV.

  Unless I misunderstood your situation, that should solve the problem.

  Nate Hanson
  Pilothouse Films
• 

  Jeremy Allen

  April 1, 2009 at 8:53 pm

  Also, to make a hole in the TV, you’ll want to set the mask on the TV to Subtract.

  ———————————————
  8core MacPro, 3.0 GHZ, 10GB RAM, OSX 10.5.2

  AE CS3
• 

  Stuart Elith

  April 1, 2009 at 10:31 pm

  The other way to do this is to have the mask on a separate layer, such as a solid, and then use it as a track matte for the picture layer. Then you have independent control of the two layers, but can still parent them or whatever if you do want to.
  It does mean an extra layer, but sometimes it’s easier.

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