7700 Multiframe Manual
7725DSK-LG / 7725DSK-LG-HD HD/SD Logo Inserter & Media Keyer
RCP OPERATION Revision 1.4 Page 4-23
4.9.2. Setting the Downstream Key Object Transparency
DSK
Key Gain
Gain: 100
Gain: 50 to 170
This menu item is used to modify the opacity (transparency) of the keyed
object used in input key mode.
Use the Ï or Ð buttons to change the Key Gain value. The default Key
Gain value of 100 will leave the transparency of the keyed object unmodified
from that defined by the key signal. Lowering the Key Gain value will
reduce the opacity of the keyed object (i.e. make it more transparent).
Increasing the Key Gain value will increase the opacity of the keyed object
(i.e. make it less transparent).
4.9.3. Setting the Downstream Key Object Offset
DSK
Key Offset
Offset: 0
Offset: -4096 to 4095
This menu item is used to modify the key offset value used in input key
mode. This value is the level that will be considered as black on the key
input, and should not normally be changed from its default value of 0.
4.9.4. Setting the Downstream Self Key Threshold
DSK
Key Threshold
Thresh.: 4
Thresh: 4 to 1020
This menu item is used to modify the threshold value used in Self Key
mode. The Self Key is a hard key based on the luminance value of the fill
signal applied to the FILL video input. All luminance values that are above
the Key Threshold will be keyed from the Fill signal. All values from the key
that fall below the Key Threshold will be keyed from the background video.
The default value for the Key Threshold is 4, which is black.
4.9.5. Allowing Automation to Control the Media Layer
DSK
Auto Key Enable
Ctrl media: yes
Ctrl media: no
Some automation systems do not create a distinction between the Media
layer (used for keying logos) and the Downstream Keyer layer. This control
is provided to prevent the automation from turning the Media layer on and
off at the same time as the DSK layer. Verify the functionality of your
automation system before changing this menu item.
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