Sony DFS-900M, Руководство по эксплуатации

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123
Using Keys to Compose Video
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1
In the KEY DELEGATION block (when using the
BKDF-901) or in the key/AUX bus control block
(when using the BKDF-902), press the button for the
key that you want to set up, lighting it.
2
In the KEYER block, select the key type.
3
In the menu that appears depending on the selected key
type, set the following parameters.
External (EXT) key parameters (External Key
menu)
To move between parameter groups, use the
h
and
H
buttons in the numeric keypad.
If you have changed the display names of input signals
and internal signals
(see page 74) , those names appear
in the F1 and F2 knob operation area.
Self (SELF) key parameters (Self Key menu)
To move between parameter groups, use the
h
and
H
buttons in the numeric keypad.
If you have changed the display names of input signals
and internal signals
(see page 74) , those names appear
in the F1 knob operation area.
When using the BKDF-902, you can select key fill and key
source signals for external keys by pressing the KEY SRC
button.
Setting up chroma keys
A chroma key is a key that cuts out a certain part of a video
signal on the basis of a specified reference color. For
example, chroma keys are used to create video of
foreground subjects against an arbitrary background by
shooting the subjects against a blue background, extracting
only the subjects for use as a key fill signal, and inserting
the key fill signal into the background.
Chroma keys can be used only with KEY1 to KEY4. They
cannot be used with DSK1 and DSK2.
The normal procedure for creating a chroma key is to
specify the color to be cut out of the video, to use an
automatic switcher function to create a key fill video (auto
chroma key) from the cut out video, and then to adjust that
video manually.
To create an auto chroma key
Use the following procedure to create an auto chroma key.
Parameter group (1/2)
Knob Parameter Description Settings
F1 KIns Key fill BLK, IN01 to
IN24, MAT1 to
MAT4, STL1 to
STL4
F2 KSrc Key source
F3 GN Gain 0.0 to 16.00
F4 Clp Key reference
level
0.0 to 100.0
Note
Parameter group (2/2)
Knob Parameter Description Settings
F1 Opac Opaqueness 0.0 to 100.0
F2 Inv Inverted On, Off
Parameter group (1/2)
Knob Parameter Description Settings
F1 KIns Key fill BLK, IN01 to
IN24, MAT1 to
MAT4, STL1 to
STL4
F3 GN Gain 0.0 to 16.00
F4 Clp Key reference
level
0.0 to 100.0
Note
Parameter group (2/2)
Knob Parameter Description Settings
F1 Opac Opaqueness 0 to 100.0
F2 Inv Inverted On, Off
Background
video
Chroma key (key
fill) video
Composite video
Blue background