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Masking a Layer

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Sherwood BallMasking a Layer
by on Apr 26, 2010 at 5:33:10 am

I have a four minute music video of a girl singer with a bandaid on her neck.
Unfortunately the bandaid is "Hello Kitty" and we can't pay for the product license.
I've created a position motion tracking path with tracker and created a plain pink bandaid
as a painted layer over a pict of the original video.
Now I'm adjusting, tweaking the position of the bandaid.

My problem, is I've never really worked much with masks.
I need to mask this bandaid layer that's on top of the gal singer because her chin
drops down and covers portions of the bandaid.
How do I mask out just those portions everyonce in a while when her chin drops down
to cover the original bandaid?

Thanks for your help.


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scott novasicRe: Masking a Layer
by on Apr 26, 2010 at 7:07:45 am

pre comp the bandaid you have already created. Use the pen tool to mask it out during the frames you need. During the frames you dont, simply set the transparency setting in one frame or field to zero then back to 100 as you may need the mask active again. Setting it to zero renders it null and inactive.

Animation & Visual Effects
Scott Novasic
Los Angeles Ca

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Tudor "Ted" JelescuRe: Masking a Layer
by on Apr 26, 2010 at 7:14:18 am

On the pink band aid layer (selected) use the pen tool to create a shape of her chin at the lowest point. That's your mask- select "substract"(that will cut your band aid and reveal the chin- feather the mask so you'll not have a hard edge) and animate.
Check Adobe site for more info.
Here's some useful links:

You may be able to use this tutorial and create a mask of the original band aid:
Good luck!

Tudor "Ted" Jelescu
Senior VFX Artist
Bucharest, Romania

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Roland R. KahlenbergRe: Masking a Layer
by on Apr 26, 2010 at 9:15:51 am

Mocha should be able to track and create a shape for u to use as a matte.


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