Configuring Vision Mixers
From CasparCG Wiki
It's important that you set up your vision mixer (also called video switcher or production switcher) to correctly apply the key signal that CasparCG Server outputs. Unfortunately, different manufacturers use different terminology for the DSK (down-stream keying.)
You generally want to use content with pre-multiplied against black (also know as linear or additive) alpha channel since content played by the Flash Producer is always premultiplied against black. You also want to avoid modifying the key signal in the switcher, so keep the settings for clip, gain, opacity/density to their defaults.
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Grass Valley Configuration
On Thomson Grass Valley vision mixers / switchers, the correct keying settings are as follows:
- Mode: Additive Key
- Size: Off
- Position: Off
- Gain: 100.0 %
- Clip: 50.0 %
- Opacity: 100.0 %
Sony Configuration (newer)
On newer Sony vision mixers / switchers, the correct keying settings are as follows:
- Key Type: Linear
- Mode: Clean Mode
- Key Fill: Key Bus
- Clip: 0.00
- Gain: 0.00
- Density: 100.00
Sony Configuration (older)
On older Sony vision mixers / switchers (DVS-7250,) the correct keying settings are as follows:
- Key Type: Clean
- Clip: 0.00
- Gain: 30.00
- Density: 100.00
