<p>Not sure about Set Matte, but you could try setting the transfer mode of the shape layer to Silhouette Alpha? That will cut out everything beneath that layer.</p>

<p>(You currently have the transfer modes hidden. Right click on the title bar above your layer names, click to Columns->Modes)</p>

CC BY-SA 4.0
2019-02-25T08:14:13.670Z
2019-02-25T08:14:13.670Z
geekman
<p>I am trying to use a shape layer with set matte to mask off everything behind the screen, but it does not appear to be working here is a video <div class="youtube-embed"><div>
                <iframe width="640px" height="395px" src="https://www.youtube.com/embed/zGA80iToL2A?start=0"></iframe>
            </div></div>
Please help</p>

CC BY-SA 4.0
2019-02-25T06:44:59.133Z
Try pre-comping the shape layer.
tomh
CC BY-SA 4.0
2019-11-14T14:05:13.280Z
the layer you're using as a matte needs to have a fill effect applied.
Liam
<after-effects><effects>
Set Matte not masking layers the same
01Beaker
# Set Matte not masking layers the same

(Asked by: username_0 on 2019-02-24)

I am trying to use a shape layer with set matte to mask off everything behind the screen, but it does not appear to be working here is a videoPlease help

**Tags:** after-effects, effects

> **Comments:**
> **username_1**: Try pre-comping the shape layer.  
> **username_2**: the layer you're using as a matte needs to have a fill effect applied.  

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## 1 answers

### Answer by username_3 on 2019-02-25. Score: 0 | Accepted answer

Not sure about Set Matte, but you could try setting the transfer mode of the shape layer to Silhouette Alpha? That will cut out everything beneath that layer.

(You currently have the transfer modes hidden. Right click on the title bar above your layer names, click to Columns->Modes)


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