Datavideo DVK-400, Instruction Manual

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Matte Generation
To continue, the Matte Generation option at the top of the page needs to be enabled first. To reset
Matte settings to default values, simply click the “Reset” button.
Note: If this option is disabled, Chomakey will be turned off and the AUX Lumakey will be overlaid
on the background instead, which can be displayed on the output monitor by selecting COMP as
the output.
Backing Color
In “Backing Color”, you can select the foreground’s screen color manually or enable the auto
mode to allow automatic screen color selection. In most cases, auto mode will be adequate.
Click the “Auto” button to enable automatic screen color selection. Once clicked, the
foreground will be shown on PVW OUT along with a crosshair (+) scanning across the
entire monitor to collect the screen color data. The DVK-400 then calculates the optimal screen
color, adjusts the chromakey parameters accordingly and finally applies the key to the foreground.
This entire process should take approximately 2 seconds.
Note: If saturation or brightness of the green/blue screen is lower than 20%, the “Auto” mode
may fail. To fix this problem, please improve the studio’s lighting and adjust the camera settings.
Click the dropper icon to manually select the screen color. When clicked, the “Pick Back
Color” window will appear on the notebook/PC and the foreground will be shown on
PVW OUT along with a crosshair (+). Use the mouse to move the crosshair to the desired screen
color then click the mouse and the “Pick Back Color” window should display the selected color.
Once you’ve selected the desired screen color, you can either click “Auto” or “OK” on the “Pick
Back Color” window to confirm the selected color and allow the DVK-400 to adjust the chromakey
parameters accordingly then apply the key to the foreground image.