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To use a monochromatic image (color matte) as a DSK FILL video
Composing Video Using the Chroma Key
Basic operation of chroma keying
Note
If "DSK CLN" is set to "On" on menu page 933, the composite DSK video is
not displayed in the preview window. Set "DSK CLN" to "Off" (page 96).
When a transition is complete, the composite video disappears from the preview
window even if "DSK CLN" is set to "Off."
1
Display menu page 750.
DSK
LUM
MAT
0.0
2
Turn the F1, F2 and F3 controls to adjust "LUM" (luminance), "SAT"
(saturation) and "HUE" of the monochromatic image.
3
Turn the F4 control to set "FILL" to "On."
When the DSK transition is executed, the adjusted monochromatic image is
composed as a DSK FILL video.
A video is created by detecting a specific color component (chroma) to cut a
portion from the DSK FILL video. This method is referred to as "chroma key."
Generally, a subject is shot with a blue background, the background that
contains blue component is cut out, then only the subject is superimposed on a
background video.
In the example below, only a figure cut from the DSK FILL video is composed
with the background video.
Background video
The switcher is provided with two methods for setting the chroma key.
• to set the chroma key automatically, specifying the color by moving the cursor
displayed in the preview window with the joystick
• to set the chroma key manually by menu operation
You can also adjust the chroma key manually after specifying it with joystick
operation.
Using the Downstream Key (DSK) to Add Characters or Graphics
SAT
HUE
0.0
0.0
DSK FILL video
Chroma key composition
Blue background
FILL
5/6
Off
750
91
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