Instruction manual

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DS Keyer Tab Screen The KONA 3G has a hardware-based downstream keyer that is ideal for putting logos, “bugs”
or other video material with an alpha channel on top of video being played out or printed to
tape. A typical application would be putting a television station's call letters or channel over
program video content. Keyed video can be from the KONA's internal Frame Buffer (from
storage, video In, KONA TV, etc.) or from a graphics file that has an alpha channel (PhotoShop
etc.).
Note: The Downstream Keyer is for use with Standard Mode firmware, not 4K Mode.
AJA Control Panel, Downstream Keyer Tab
Settings in the DS Keyer tab provide control over how the keyer operates and whether it's
turned on or off. Controls and their meanings in the Tabbed 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