Chapter 6
Using PowerScript
106
W
ORKING
WITH
B
ACKGROUNDS
A background can be:
•
A solid color
•
An incoming video signal (using PowerScript’s internal keyer) over which you can
superimpose a page
•
A graphic (such as an imported EPS, JPEG, PCX, or GIF graphic file)
PowerScript holds the page background in a special background
plane
. The page you are
creating and the one that is playing on the output channel share this plane. Therefore, if
you play a title on the Program monitor while simultaneously editing another page on
the Preview monitor, the background is not displayed on the Preview monitor while edit-
ing. The Preview monitor uses the same color as the background on the Program moni-
tor. If you change the background, PowerScript remembers it, but it won’t appear until
the playback stops or the playing page happens to use the same background color.
Tip
If you want to see the background while creating pages, set your system to Single-Monitor
Mode. When you are ready to playback the pages, reset the system to Dual Monitor Mode.
See “Video Parameters” on page 123 for instructions.
Creating a Solid Color Background
To create a solid color background:
1
Click the
Bkgnd
option on the
MAIN MENU
to display the
BACKGROUND
menu, or
enter
Ctrl+F9
.
2
Select the
Background On/Off o
ption (so that an X appears in the box).
3
Use the
Hue
,
Saturation
, and
Brightness
controls to select the color of background you
want. See “Sliders and Text Values” on page 59 for more information.
Using a Video Signal as a Background (Using PowerScript’s Internal Keyer)
Keying
is the process of superimposing titles and graphics over an incoming video signal.
PowerScript supports internal and
D
own
S
tream
K
eying (DSK).
Internal Keyer
PowerScript’s internal keyer automatically superimposes titles and graphics on video that
comes in through its Video IN jack.
To use the internal keyer:
1
Connect a video source (such as a VTR) to the Video IN jack on PowerScript’s rear panel.
2
Display the
BACKGROUND
menu (see above) and deselect the
Background Option
. This
allows the incoming video signal to serve as the background.
HUE
SATURATION
BRIGHTNESS
33
100
0
BACKGROUND
Background On/Off
Содержание PowerScript PS4000S
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