Äcompositing Video With Downstream Keyer (Dsk); About Dsk Mode - Roland VR-6HD Reference Manual

Compositing Video with Downstream Keyer (DSK)
You can further composite titles, subtitles/captions and other video on video composited using split (p. 21) or PinP (p. 33).
DSK layer is shown in front of other layers (

About DSK Mode

There are three DSK composition modes, "Self key", "Alpha key" and "External key".
The following video compositing is available according to the DSK mode.
Self key
Alpha key (p . 39)
External key (p . 40)
Ø
memo on p. 33).
Luminance key (p . 36)
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.
Background video DSK video source
Black or white
Chroma key (p . 37)
Here's how you can cut out a video by turning its blue or green portion transparent, and then superimpose it on
the background video. You can select a color from the video material to set as the key color.
Background video DSK video source
Blue or green
Uses alpha channels (areas which contain transparency data) to cut out still images and place them against
different background video as a composite.
Background video DSK video source
Alpha channel
This sets the key signal (the shape to be cut out) and the fill video (the video to be composited) separately. This
uses the key signal to cut out the fill video and superimpose it on the background video to create the composite.
Fill video source
Background video
Key source
Video Composition Operations
35