I have a smart object (circle) and I want to have a mask grow from scale 1% to 100% on the video timeline (imagine a doughnut hole where the hole gets bigger and bigger until there is no doughnut left).
I'm able to get the circle to transform if I liked, but the layer mask never does anything on the video timeline. Am I unable to transform a layer mask because it's not a smart object?
I tried using a vector mask but a vector mask is more of a "window" than a "mask". It's hard to get the effect I want (the center of the circle having a transparent hole that gets bigger until the entire visible circle is transparent).
Any help would be hugely appreciated.