Roland VR-120HD Direct Streaming AV Mixer - Manual (Page 39)

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Video Composition Operations
Compositing a Caption or Image (Luminance Key)
Here’s how you can cut out text or image by turning its black or white portion transparent, and then superimpose it on the background video.
Black or white
Background video DSK video source
Compositing using DSK
This shows how to composite an image using “DSK 1”.
The steps are the same when using “DSK 2”.
1 . Press the DSK 1 [SETUP] button to turn on (lit).
The DSK setup screen appears.
2 . Touch the setup screen to make the following settings.
Parameter Explanation
DSK Mode Self Key
DSK Type
Luminance-White Key
(Makes white portions transparent according to
brightness.)
Luminance-Black Key
(Makes black portions transparent according to
brightness.)
3 . Press a VIDEO SWITCHER [1]–[8] button to select the DSK
video source.
Magenta: DSK video source
White:
Video input available
Unlit: Video input unavailable
* When selecting a video that is not assigned to Input 1–8, set this in
“DSK Source” on the setup screen.
MEMO
You can also directly touch the multi-view, input-view or still-view
screens to select a video signal.
4 . Press the DSK 1 [PVW] button to turn on the preview output
(lit).
A preview of the composition results is displayed in the PVW section
of the multi-view.
At this stage, the final output has not yet been changed.
5 . Touch the setup screen to adjust the intensity of the effect.
Parameter Explanation
DSK Settings
DSK Level
Adjusts the degree of extraction (transparency) for
the key.
DSK Gain
Adjusts the degree of edge blur (semi-transmissive
region) for the key.
Time Adjusts the fade-in/out time for the DSK video source.
* For details on the parameters, refer to “6: DSK” (p. 108).
6 . Press the DSK 1 [PGM] button to turn on DSK compositing (lit).
The composition results is sent to final output.
7 . To turn off DSK compositing, press the DSK 1 [PGM] button
once again.
Turning DSK/PinP composition on/off in tandem
with video transitions
You can make DSK/PinP composition turn on/off in tandem with the
video transitions.
From the [MENU] button
Ó
“System”, set “Effects Transition Sync” to “ON”.
After step 4, use the [AUTO] and [CUT] buttons to switch the video. DSK
composition turns on, and the composited result that is previewed is sent
to final output.
Modifying the caption or image
You can fill-in the superimposed caption or image, or add an edge to it.
Configure the following parameters on the DSK setup screen.
Parameter Explanation
Fill Settings
Fill Type If this is set to “Matte”, the superimposed caption or
video is filled in with the color specified in “Matte
Color”.
Matte Color
Edge Settings
Edge Type Specifies the type of edge.
Edge Color Specifies the color of the edge.
Edge Width Specifies the width of the edge.
* This setting is in common with chroma key (“Compositing a Subject
and Background (Chroma Key)” (p. 40)).