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DS Keyer Screen
The KONA LHe Plus has a hardware-based downstrea
m
keyer that is ideal for putting logos,
“bugs” or other video
m
aterial 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 progra
m
video content. Keyed video can be fro
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the KONA's internal Fra
m
e
Buffer (fro
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storage, video In, KONA TV, etc.) or fro
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a graphics file that has an alpha channel
(PhotoShop etc.).
AJA Control Panel, DS Keyer Screen
DS Keyer Settings
Downstream Keyer Mode:
Downstream Keyer Off
— when this pulldown
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enu ite
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is selected the downstrea
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keyer will be turned off
Frame Buffer over Matte
— places the keyed video with alpha channel currently in the
Fra
m
e Buffer over a fixed color
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atte deter
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ined by the “Matte Color” setting set
separately.
Frame Buffer over Video In
—places the keyed video currently in the Fra
m
e Buffer over
the video input for playout or print-to-tape.
Matte Color:
only available when the pulldown “Fra
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e Buffer over Matte” or “Graphic
over Matte” are selected-pressing this button brings up a color selection dialog. The
dialog provides a variety of ways to select a
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atte color including a color wheel, color
picker (choose fro
m
a location anywhere on the co
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puter screen), nu
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eric sliders,
swatches, “crayons”, and spectru
m
s. The
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atte chosen will be used as a video
background under the keyed video.
Foreground pre-multiplied (checkbox):
use to avoid “
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atte lines” and i
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prove the
appearance of the foreground (key) being co
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posited over the background.
Audio Out:
Frame Buffer
—select audio out to be routed fro
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the contents of the Fra
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e Buffer.
Audio In
—select audio out to be routed fro
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KONA’s currently selected input(s).
USO
RESTRITO
