How to scale layer behind mask?

[Adolfo Rozenfeld]

There are two ways.
The first may sound a bit complicated but will help in any case in which you may want to alter the rendering order. In this case, process the scale transformation after the mask, instead of the other way around (if you adjust scale and the mask also is scaled, that is prof that masks are usually calculated before transformations like scale in the processing chain).
These are the instructions I wrote a couple of days ago:

https://forums.creativecow.net/readpost/2/958166

The other way is with a Track Matte:
Create a solid with the same dimensions as your layer, and place it so it’s immediately above in the timeline. Cut the mask and paste in the solid. Set the original layer’s track matte mode to Alpha (next to the blend modes in the timeline).

Adolfo Rozenfeld · Adobe

[Matt Carl]

And the third way to do it would be to make a pre comp. Put the object you want to scale in a pre comp and do whatever scale change/ panning/ whatever you want in it. Then back in your master comp put the mask on this pre comp. This way the size of of you object won’t affect your mask since your pre comp is staying the same size.

[Adolfo Rozenfeld]

That’s the first way, Matt 🙂

Adolfo Rozenfeld · Adobe

[Elizabeth Winter]

Thank you very much. I’m going to try all three methods!

[John Hammond]

I just came across this problem.

In my case it was solved by just cutting the masks out of the layer, scaling the layer, and pasting them back in.

I was seriously overthinking it