<p>I try to edit a video clip, like a steady cam and slow motion, using a mask and Time Warp in after effect. </p>

<p>But, whenever i select any effect in Effect menu of a menu bar, the mask is not working. </p>

<p>Can i use a mask and effect at the same time? </p>

<p>or, i have to use pre-composition where effect is applied, and then mask, such pre-comp?</p>

<p>plz help me.</p>

CC BY-SA 3.0
2015-05-05T07:23:07.870Z
What exactly are you trying to do? Can you post a relevant screenshot or two?
Gyan
CC BY-SA 3.0
2015-05-05T10:12:07.530Z
Yes, precomp your layer and apply a mask on the composition instead.
p2or
<after-effects>
In affter effect cs 6, I don't know why i cannot use mask with effects
Woo-hyeok Choi
# In affter effect cs 6, I don't know why i cannot use mask with effects

(Asked by: username_0 on 2015-05-05)

I try to edit a video clip, like a steady cam and slow motion, using a mask and Time Warp in after effect.

But, whenever i select any effect in Effect menu of a menu bar, the mask is not working.

Can i use a mask and effect at the same time?

or, i have to use pre-composition where effect is applied, and then mask, such pre-comp?

plz help me.

**Tags:** after-effects

> **Comments:**
> **username_1**: What exactly are you trying to do? Can you post a relevant screenshot or two?  
> **username_2**: Yes, precomp your layer and apply a mask on the composition instead.  

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## 0 answers

