Thanks. It's not really essential that we do that, I'm just being picky and also curious about those X/Y sizing options.
There is a painting in our library that we have set up as a target. The target triggers an animated version of the photo, https://youtu.be/7vCCJ-HC9XM
but the photo itself is vertically oriented, taller than it is wide. Since I created the animation at a square 256x256px, the top and bottom of the picture are still visible. It would be nice to make the overlay bigger than the photo on the wall so that those bits are covered up. Or is there a better workaround, such as adding a transparency to the animation, or actually rendering it at something more vertical, like 200x256?
I've attached an image of the painting with a different overlay image that I did during a test session. You can see why I want to do something about the top and bottom parts. Yes, I'm this picky. Thanks for any thoughts you may have. This is not mission critical.