Roland V-600UHD 4K HDR Multi-Format Video Switcher - Manual (Page 22)

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Video Composition Operations
Luminance Key
This takes video in which white or black areas are made transparent,
and composite it overlaid on a background picture.
Black or White
Chroma Key
This composites video shot against a blue or green background onto
a different background video.
Blue or Green
Setting the key type and extraction color
To change the key type and extraction color to match the video you
want to composite.
1 . COMPOSITION
Select the [MENU] button & “Composition” &
“Key1,” and press the [VALUE] knob.
DSK
Select the [MENU] button & “DSK” & “Key2,” and
press the [VALUE] knob.
2 . Select “Type,” and use the [VALUE] knob to specify the
key type (extraction color) to use when compositing.
Value Explanation
Luminance White
This uses a brightness threshold to make white
transparent.
Luminance Black
This uses a brightness threshold to make black
transparent.
Chroma Blue This uses a color threshold to make blue transparent.
Chroma Green This uses a color threshold to make green transparent.
Chroma Manual
This uses a color threshold to make manual color
transparent.
3 . Press the [MENU] button to quit the menu.
Compositing using key
1 . Press a cross-point [1]–[8] button in the PGM
section to select the video you want to make the
inset screen.
2 . Press the MODE [AUX/COMPOSITION] button or [DSK]
button to select the send-destination for the video.
3 . Press a cross-point [1]–[8] button in the AUX/
COMPOSITION - DSK section to select the video to
overlay.
4 . According to the button that you pressed in step
2, press one of the following buttons to turn key
compositing on (lit).
If you pressed the [AUX/COMPOSITION] button
Press the COMPOSITION KEY1 [KEY ON] button.
If you pressed the [DSK] button
Press the DSK KEY2 [KEY ON] button.
The KEY1 [KEY ON] or KEY2 [KEY ON] button lights up in green,
and a preview of the composition results is displayed in the PVW
section of the multi-view monitor.
At this stage, the final output has not yet been changed.
Compositing Using Luminance Key/Chroma Key
This makes a portion of the video transparent and composites it onto a background video.