Grass Valley Kayak HD v.6.9.3 - Manual (Page 231)

Kayak — User Manual 231
Keyer Menus
Utility Bus
The Utility Bus mask sources originate from the utility bus in the chosen
M/E. Typically these are used to bring in garbage masks from a RAM
Recorder (Still Store) or some external device.
Figure 151. Keyer Menu – Utility Bus Mask
Mask On Button
The Mask may be turned on or off by selecting the Mask On button.
Mask Invert Button
The Mask Invert button inverts the sense of the delegated mask. When off,
areas formerly masked will be visible, and previously visible areas will be
masked. Masks are normally active in the center of the pattern. An inverted
mask is active outside the pattern.