Grass Valley PDR v.2.1 - Manual (Page 43)

Analog Composite Video Input Advanced Control
Profile Family 27
Analog Composite Video Input Advanced Control
The Advanced Control tab allows you to select a Decode mode. Decode mode
determines how the chrominance and luminance information is separated for
conversion to serial digital video for storage. Click or double-click on the
Advanced Control tab (see Figure 15).
Figure 15. Analog Composite Video Input dialog box, Advanced Control tab
There are four options:
• Notch. Decoder mode separates the chrominance by using a notch filter
around the chrominance subcarrier. This leaves the high frequency
luminance intertwined with the chrominance. A notch decoder readily
determines horizontal lines are line-to-line luminance. Fine vertical lines can
be more difficult.