Key Source; Fill Source; Ck Setup - Datavideo SE-650 Instruction Manual

Gain adjusts the light/white areas of the key image.
Opac adjusts the transparency of the overall foreground key image.

4.2.3 Key Source

This sub-option allows the user to assign the key source; various options are listed below:
• Bars
• Matte – Set in Start/Matte
• Freeze
• Still 1
• Still 2
• Input 4
• Input 3
• Input 2
• Input 1
• Black

4.2.4 Fill Source

This sub-option allows the user to assign the fill source; various options are listed below:
• Bars
• Matte – Set in Start/Matte
• Freeze
• Still 1
• Still 2
• Input 4
• Input 3
• Input 2
• Input 1
• Black

4.2.5 CK Setup

In this sub-option, the user will be able to find all the parameters needed to perform chromakeying of
the green or blue backdrop.
CK Auto: This function automatically calculates the best Hue & Luma values for the current Keyer
source.
Hue: This parameter adjusts the color of the chroma key. A typical green screen value will be around
120. Blue screen value will be around 240.
Luma: This parameter adjusts the luma value of the chroma key
K Range (Key Range): Key Acceptance sets the range of hues or colors (0 – 360 degrees) that closely
match the background color to be keyed. The user can start with a value of 120 degrees and this value
can be fine-tuned up or down depending on the setup of the green or blue screen studio.
K Fgnd (Key Foreground): Key Foreground adjusts the performance of the chroma key in light or white
areas. Apply more Key Foreground if the light areas are becoming too transparent.
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