Alpha Mask on Layer

How-To
1

Hi hello,

Is there a way cut out a hole in a layer with zero alpha in it?

2

Sure thing: Adding an Alpha Mask to Video (Notch Quick Tip) - YouTube

3

Right, thanks! However I’d like to have a blank spot in my mask, not another image 2d. So that I can render out my scene to be used with alpha in after effects for example!