Grass Valley PDR v.2.2 - Manual (Page 55)

Analog Composite Video Input Advanced Control
Profile Family 37
Analog Composite Video Input Advanced Control
The Advanced Control tab allows you to select a decode mode, clamp speed,
and vertical interval. Click or double-click on the Advanced Control tab to view
it (see Figure 20).
Figure 20. Analog Composite Video Input dialog box, Advanced Control tab
Decode mode determines how the chrominance and luminance information is
separated for conversion for storage. There are three options:
• Notch Filter. Decode 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.