Roland V-4EX User Manual

33
Use the compositing eects described below to composite (combine) two pictures. By default, these eects are assigned to B-Bus
Eect buttons 2 through 4.
CHROMA-KEY
This extracts (blanks out) blue or green areas in the foreground picture and composites with the background picture.
By default, blue areas are extracted.
LUMINANCE-KEY
This extracts black or white areas of the foreground picture and composites with the background picture.
By default, black areas are extracted.
PinP (Picture-in-Picture) This reduces the size of the foreground picture and composites with the background picture as an inset screen.
g.composition-eects.eps
Key Compositing
You can use the KEY menu (p. 40) to change settings like the extraction color for chroma key or luminance key.
Compositing Using Chroma Key
Using chroma key, you can composite video that has a blue or green background. Blue is extracted by default..
g.chroma-key-image.eps
Chroma Key
Blue (Green)
1. Choose the background picture.
Use the A-Bus input selectors to select the channel of the background.
2. Select the video to display in the foreground.
Use the B-Bus input selectors to select the channel of the video to be displayed in foreground.
3. Perform compositing.
Press the B-Bus [CHROMA-KEY] Eect button to make it light up.
g.press-chroma-key.eps
Compositing Two Pictures

Roland V-4EX Specifications

General

On/off switch	Yes
Product color	Black
Rack mounting	No
Output current	2 A
Power source type	AC
Video resolutions	640 x 480, 800 x 600, 1024 x 768, 1280 x 1024, 1366 x 768, 1400 x 1050, 1600 x 1200, 1920 x 1200 pixels
Supported video modes	480i, 480p, 576i, 576p, 720p, 1080i, 1080p
Analog signal format system	NTSC, PAL
BNC input ports	4
Number of HDMI outputs	2
VGA (D-Sub) input ports	1
Display type	LCD
Display resolution	320 x 240 pixels

Weight and Dimensions

Depth	296 mm
Width	225 mm
Height	105 mm
Weight	2600 g