AJA KONA 4 Installation & Operation Manual page 56

Figure 19. AJA Control Panel, Downstream Keyer Screen
Settings in the DS Keyer Screen provide control over how the keyer operates and
whether it's turned on or off. Controls and their meanings in the screen are as follows:
Downstream Keyer
Mode
Downstream Keyer Off When this pulldown menu item is selected the downstream keyer will be turned off.
Frame Buffer over Matte Places the keyed video with alpha channel currently in the Frame Buffer over a fixed color
matte determined by the "Matte Color" setting set separately.
Frame Buffer over Video In Places the keyed video currently in the Frame Buffer over the video input for playout or
print-to-tape.
Graphic over Matte Places a graphics file having an alpha channel (chosen in "Graphic File" pulldown) over a
fixed color matte determined by the "Matte Color" setting set separately.
Graphic over Video In Places a graphics file having an alpha channel (chosen in "Graphic File" pulldown) over
the video input for playout or print-to-tape.
Graphic over Frame Buffer Places a graphics file having an alpha channel (chosen in "Graphic File" pulldown) over
the current contents of the KONA card's Frame Buffer (which might be from storage,
video In, KONA TV, etc.).
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