# Masking a movie clip

**URL:** <https://forum.kirupa.com/t/masking-a-movie-clip/56337>\
**Category:** Uncategorized\
**Created:** [July 2, 2004, 8:14pm UTC](https://forum.kirupa.com/t/masking-a-movie-clip/56337 "2004-07-02T20:14:00Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![jrw](https://avatars.discourse-cdn.com/v4/letter/j/f05b48/32.png) [@jrw](https://forum.kirupa.com/u/jrw)\
**Post date:** [July 2, 2004, 8:14pm UTC](https://forum.kirupa.com/t/masking-a-movie-clip/56337/1 "2004-07-02T20:14:00Z")

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Is there some trick to masking a movie clip? I have two movie clips that I am placing on the same layer and duplicating about 20 times. One is a ball that vibrates and I can mask that one with no problem. The other movie clip is a ball that bounces around the screen. No matter where I place it, this bouncing ball will not get masked.

I have no clue what is going on. Help would be much appreciated!

JRW

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**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/kirupa/original/3X/6/2/621e5c11736f46532526e61be85940af4230f3e5.png) [@system](https://forum.kirupa.com/u/system)\
**Post date:** [July 2, 2004, 8:14pm UTC](https://forum.kirupa.com/t/masking-a-movie-clip/56337/2 "2004-07-02T20:14:54Z")

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um, drag the bouncing ball under the mask, so that it is indented a bit

that way it will be part of the same mask that the top one is.

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**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/kirupa/original/3X/6/2/621e5c11736f46532526e61be85940af4230f3e5.png) [@system](https://forum.kirupa.com/u/system)\
**Post date:** [July 2, 2004, 8:40pm UTC](https://forum.kirupa.com/t/masking-a-movie-clip/56337/3 "2004-07-02T20:40:24Z")

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You might try using setMask(). Give it a look up in the AS Dictionary.