Datavideo SE-1200MU 6-Input Switcher and RMC-260 Controller Bundle - Manual (Page 65)

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Windows PC Users MAC Users
8.5 Key MASK Function
A simple rectangular garbage mask can be quickly created within the SE-1200 MU. This Mask feature can
be used when the Chroma key or Luma key modes are active.
Note : This mask’s edges are fully transparent during the keying process. This can be helpful if the blue or
green backdrop in a chroma key set up does not occupy the whole foreground shot. It is also helpful if only
a small area of the foreground image is being Luma keyed, say a whiteboard or blackboard. Each mask
value is based on a percentage of the screen width or height, thus 0% indicates no mask edge and 50%
means masking to half of the screen area from the selected outside edge.
1. To configure the Mask function, click the MASK button on the MENU SELECT panel.
Windows PC Users MAC Users
2.
The Mask parameters are displayed along the bottom of the screen.
Windows PC Users MAC Users
3. The Left, Right, Top & Bottom values allow the user to set the inside Left, Right, Top & Bottom edges
of the keyer mask.
In our example, shown above, we have brought in the mask on the left, right and bottom edges only.
These edges will be automatically keyed out leaving just the light centre area to be manually Luma or
Chroma keyed.
Note: A mask reduces the foreground area that an on screen actor/presenter can work within.