Video Grabber User Manual - v. 1.19 (FW 1.29)
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Appendix A: Modelines
When capturing analogue video signals user can override detected video settings and either adjust the
capture on his own or provide a Modeline for the Video Grabber to use.
Modeline is a configuration set based on the Generalized Timing Formula or the Coordinated Video
Timings standards produced by VESA and contains information needed to properly interpret the
captured video signal. The format is as follows:
1
2
3
4
5
6
7
8
9
10
11
12
Figure 33: Analog resolution table on the Status page.
1.
Name
2.
Pixel Clock Frequency [MHz]
3.
Width
4.
Width + Front Porch
5.
Width + Front Porch + Sync Pulse
6.
Width + Front Porch + Sync Pulse + Back Porch
7.
Height
8.
Front Porch
9.
Front Porch + Vertical Blanking Interval
10.
Front Porch + Vertical Blanking In Back Porch
11.
Horizontal sync polarity
12.
Vertical sync polarity
