Datavideo RMC-120 User Manual page 12

14. Main Video Source Selector: used to select which of the
four video input channels or
background is sent to the Main
video output.
15. Sub Video Source Selector: used to select which of the
four video input channels or
background will be transitioned
to or used as a sub source in
an effect.
16. Chroma Key: when engaged, this removes the selected
color from the Main Video Source and reveals the
corresponding portions of the Sub Video Source.
Repeated presses of the Color up and down buttons
selects the color to be removed. Repeated
presses of the Level up and down buttons
sets how much of the color will be
removed. Color and level information are
displayed in the windows above the
Keypad (21.)
17. Preset selectors: control the 30 user programmable
preset locations for storing
customized effects and
transitions.
18. Picture in Picture: puts the selected Sub Video
Source in a window on the Main Video Source,
with control over window size and placement.
Used in conjunction with the Border keys (7.)
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