Roland VR-4HD HD AV Mixer - Manual (Page 25)

25
Video Effect Operations
Compositing Using Key
1.
Input the logo or video.
By factory default, the settings are such that text and video input on
channel 4 are used in key composition.
When you want to use text or video input on another channel, use the
[SYSTEM SETUP] button g <KEY> g <KEY SOURCE CH> to change the
channel.
If you want to perform compositing using a captured still image (p. 20)
or a still image sent from VR-4HD RCS dedicated software, change the
setting to “STILL.”
MEMO
5 The selected channel (the channel shown
in the foreground in key composition) is
displayed on the channel screen with a KEY
icon.
5 You can disable operation of the [KEY] button by setting <KEY
SOURCE CH> to “OFF.”
2.
Press the [INPUT] button, making the button light up.
The incoming video on channels 1 through 4 is displayed on the built-
in monitor as a four-way split screen.
3.
Tap the channel screen you want to make the background
video.
A red border is displayed around the selected channel screen.
4.
Press the [KEY] button to turn on key composition (making
the button light up).
The video you selected in steps 1 and 3 is composited and output.
5.
Press the [VIDEO FX/KEY LEVEL] button to display <KEY
LEVEL>.
6.
Select <KEY LEVEL> and use the [VALUE] knob to adjust the
amount of keying.
MEMO
5 <KEY LEVEL> is a shortcut for the [SYSTEM SETUP] button g <KEY>
g <CHROMA KEY LEVEL> or <LUMI KEY LEVEL>.
7.
Press the [VIDEO FX/KEY LEVEL] button to quit the <KEY
LEVEL> display.
8.
To turn off key compositing, press the [KEY] button a second
time.
The [KEY] button goes dark and the text or video displayed in the
foreground disappears.
NOTE
5 Chroma-key composition sometimes leaves color or small artifacts
at the edges of the extracted video, but this is not a malfunction.
MEMO
5 For the duration of the fade for the key-composited text or
video, the setting made using the [SYSTEM SETUP] button g
<TRANSITION> g <TRANSITION TIME> is applied.
Making Advanced Settings for Chroma Key
You can adjust degree of edge blur of the picture displayed in the
foreground and fine-tune the values for hue and saturation.
Use the [SYSTEM SETUP] button
g <KEY> to make the settings for the
following items.
Setting item Explanation
CHROMA KEY GAIN
This adjusts the degree of edge blur for the
foreground video.
CHROMA KEY HUE WIDTH This adjusts the hue width (range).
CHROMA KEY HUE FINE This adjusts the center position for hue.
CHROMA KEY SAT WIDTH This adjusts the saturation width (range).
CHROMA KEY SAT FINE This adjusts the center position for saturation.
Making Advanced Settings for Luminance Key
You can adjust the degree of edge blur of the text or video displayed
in the foreground.
Use the [SYSTEM SETUP] button
g <KEY> to make the settings for the
following items.
Setting item Explanation
LUMI KEY GAIN
This adjusts the degree of edge blur for the foreground
video or text.
KEY icon