Recently, someone reported that a filter is not working. Unlike some earlier complains, this is true under certain condition and most users (including me) will likely overlook this issue until running into problem.
The Filter in question: Mirror
Problem: No effect observable when applying to an image of 900px X 900px, regardless parameter tweaking.
Cause: The combined resolution of the source image and the mirror, i.e. 900x1800 or 1800x900, exceeded the “max image size” setting in “System setting” (Note: it does not help to use the “zoom%” parameter in AviUtl. It will still fail.)
Solutions:
Method 1: Shrink your source image
Method 2: In the above setting box, give the first two text boxes (width and height) some larger value, such as 2048×2048. Then close and restart AviUtl.