Global Masking Size - High End Systems MMS100 User Manual

Global Masking Size

The Mask Size parameter defines mask size for all mask shapes.
Default DMX Value: 255 (100%) = no masking effect
When this parameter is set at a value of 255 (100%), the mask is sized to leave the image 100% visible. When Mask Size
is set at 0, the mask totally covers the composite image.
Tip: Crossfading the Mask Size parameter can create unique fades to and from video black.