Ability to crop foreground pictures

It would be very helpful if we had the ability to crop foreground pictures. Now with the ability to change an alternate screen for streaming, it would be very helpful if we could use images in the alternate screen as backgrounds against text and they could be cropped. Right now I'm using the same worship background in main display as I do in my streaming display, but I have to edit the image to use a cropped image to allow the camera video input to be seen in the rest of the screen.