Sony BRS-200 - Manual (Page 14)

14
Structure of Switched or Composed Video Output by Video Switching
Ch
apt
er 1 Ov
e
rv
ie
w
Structure of Switched or Composed Video Output by
Video Switching
B
F
P
B
P
F
Background video
PIP video
DSK SOURCE video
Foreground video
DSK FILL video
The structure of the images to be switched or composed
by video switching is shown above.
For the detailed operations, see Chapter 4 “Switching
Operation.”
Background video
The background video is an image before you apply an
effect such as wipe and mix. This can also be expressed
as an image that disappears as the effect progresses.
Select the background video with PGM select buttons 1
to 12.
Foreground video
The foreground video is an image to be inserted by
applying an effect such as wipe or mix. This can also be
expressed as an image that appears as the effect
progresses and is switched with the background video.
Select the foreground video with NEXT select buttons 1
to 12 and perform the effect, using the transition lever or
the AUTO TRANS button.
PIP (Picture-in-Picture) video
The PIP video is an image to be inserted over a
background video (and a foreground video while the
effect is being applied).
Select the PIP video by pressing the PIP button and DSK/
AUX 1 to 12 buttons. To compose the PIP video, press
the PIP AUTO button.
DSK FILL (Downstream key fill) video
The DSK FILL video is an image to be composed actually
by DSK composition.
Select the DSK FILL video by pressing the DSK button
and DSK/AUX 1 to 12 buttons. To compose the DSK
FILL video, press the DSK AUTO button.
DSK SOURCE (Downstream key source) video
The DSK SOURCE video is an image to determine the
area of a DSK FILL video to be composed. This is also
referred to as a “key.”
There are three types of keys:
• Luminance key that cuts a key portion of a DSK FILL
video using a key signal (DSK SOURCE) created by a
specific brightness of the DSK FILL video.
• Chroma key that cuts a key portion of a DSK FILL
video using a key signal (DSK SOURCE) created by a
specific color of the DSK FILL video.
• Split function that cuts a key portion of a DSK FILL
video using a key signal created by a specific brightness
of the DSK SOURCE video selected separated from the
DSK FILL video.
The DSK FILL video and the DSK SOURCE video are
identical for the luminance key and chroma key.
Program video
The program video is an image output from the switcher
after switching or composition was applied.
Note
Program video