Key Source; Mask - Datavideo SE-4000 Instruction Manual

parameters in the Chroma sub menu. To enable the P-in-P window with the chroma key effect
applied, press Key 1 PGM or PVW button on the switcher's control panel.

Key Source

This option allows you to select the key and fill sources.
Select the key source from the list below:
 Bars: Color bars
 Matte: A configurable color screen and the Matte value can be set in Matte option of
the Start menu
 Input 1 – 8: Image source loaded to channel buttons 1 – 8
 Black: Black Screen
Select the fill source from the list below:
 Bars: Color bars
 Matte: A configurable color screen and the Matte value can be set in Matte option of
the Start menu
 Input 1 – 8: Image source loaded to channel buttons 1 – 8
 Black: Black Screen

Mask

The Mask feature basically shrinks the source image by removing borders of the final image.
In this option, the user is allowed to configure the Mask in chroma, luma or linear mode by
adjusting Left, Right, Top and Bottom parameters.
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