Roland V-160HD SDI/HDMI Streaming Video Switcher - Manual (Page 35)

35
Video Composition Operations
Compositing a Still Image with Alpha Channel
Use alpha channels (areas which contain transparency data) to cut out still images and place them against different background video as a
composite.
Alpha channel
Background video Still image
Setting the DSK mode or a still image to composite
1 . [MENU] button
Ó
“DSK”
Ó
“DSK 1” or “DSK 2
Ó
select
“DSK MODE” or “DSK SOURCE,” and press the [VALUE] knob.
2 . Use the [VALUE] knob to change the setting as shown
below.
Menu item Setting
DSK MODE ALPHA KEY
DSK SOURCE Specifies the still image with alpha channel.
3 . Press the [MENU] button to quit the menu.
MEMO
You can also select the still images assigned to INPUT 1–10 as a
DSK video source with the buttons.
Press the DSK 1 or DSK 2 [SOURCE] button to turn it on (the button
lights), and then select using the DSK SOURCE [1]–[10] buttons.
Compositing using DSK
In this example, we explain how to composite a still image using “DSK 1.”
The operation is the same when using “DSK 2.”
1 . Press the DSK 1 [SOURCE] button to turn it on (the button
lights up).
2 . 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.
3 . Press the DSK 1 [PGM] button to turn on DSK compositing
(lit).
The composition results is sent to final output.
4 . To turn off DSK compositing, press the DSK 1 [PGM]
button once again.
MEMO
Set the fade-in/out time for the still image to superimpose from
the [MENU] button
Ó
“TRANSITION TIME”
Ó
“DSK 1 TIME” or
“DSK 2 TIME.”
Turning DSK/PinP composition on/off in tandem
with video transitions
You can make DSK/PinP composition (p. 28) turn on/off in tandem
with the video transitions.
From the [MENU] button
Ó
“SYSTEM,” set “EFFECTS TRANSITION
SYNC” to “ON.”
After step 2, 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.