Roland V-8HD HDMI Video Switcher and UVC-01 USB Capture Device Kit - Manual (Page 23)

23
Video Operations
Luminance key
This cuts out text or an image by turning the black or white portion
transparent, and composites it onto the background video.
Black or white
Setting the DSK mode, source and type
1 . Press the [MENU] button 0 ”DSK” 0 select “DSK
MODE”, “DSK SOURCE”, or “DSK TYPE”, and press the
[VALUE] knob.
2 . Use the [VALUE] knob to change the setting as
shown below.
Menu item Explanation
DSK MODE SELF KEY
DSK SOURCE
Select the source of the text or image that you
want to superimpose.
DSK TYPE
LUMINANCE-WHITE
(Makes white portions transparent according to
brightness.)
LUMINANCE-BLACK
(Makes black portions transparent according to
brightness.)
3 . Press the [MENU] button to quit the menu.
Compositing using luminance key
1 . Output the background video.
At the PVW section of the monitor, check the video to be made
the background.
2 . Press the DSK [PVW] button to turn on the preview
output (lit).
The DSK [PVW] button lights up in green, and a preview of the
composition results is displayed in the PVW section of the monitor.
At this stage, the final output has not yet been changed.
3 . Use the DSK [LEVEL] and [GAIN] knob to adjust the
degree of effect applied.
Knob Explanation
[LEVEL] Adjusts the degree of extraction (transparency) for the key.
[GAIN]
Adjusts the degree of edge blur (semi-transmissive region)
for the key.
4 . Press the DSK [ON] button to turn on luminance key
composition (lit).
The DSK [ON] button lights up in red, and the composition results
is sent to final output.
5 . To turn off luminance key compositing, press the
DSK [ON] button once again.
MEMO
5 The fade time over which the text/image appears or disappears
when you press the DSK [ON] button is specified by the setting
of the TRANSITION TIME menu item “DSK TIME”.
5 By holding down the DSK [PVW] button and pressing the
[MENU] button, the DSK menu appears.
5 You can make DSK/PinP composition (p. 19) turn on/off in
tandem with the video transitions.
& “Turning PinP/DSK composition on/off in tandem with
video transitions” (p. 13)
After step 3, use the [AUTO] and [CUT] buttons or operate the
video fader to switch the video. DSK composition turns on, and
the composited result that is previewed is sent to final output.
Using Luminance Key