Instruction manual

58
DS Keyer Tab
Screen
The KONA 3 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.).
KONA 3 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.