SCALING Overlays (Changing the size):
@overlay OVERLAYNAME scales to % % in T
The scale size needs to be entered in twice. (If you’re adding the overlay to the background name then you only need to enter the scale size just once).
To flip the overlay horizontally, put a negative sign in front of the first scale size:
@overlay OVERLAYNAME scales to -1.0 1.0
To flip the overlay upside down, put a negative sign in front of the second scale size:
@overlay OVERLAYNAME scales to 1.0 -1.0
If you want your overlay to be skinny , change the FIRST scale number.
If you want your overlay to be flatter , change the SECOND scale number.