Video - A Practical Guide to Video and Audio Compression - page 101

A minimum of 2 samples
are required. More would
be better.

Figure 5-23 Nyquist sampling.

1 MHz 2 MHz 3 MHz 4 MHz 5 MHz 6 MHz

Figure 5-24 Resolvable detail.

Table 5-5 Resolvable Detail in the Horizontal Axis

Format Horizontal pixels

VHS 240-300

Analog NTSC 330

Analog PAL 350

S-VHS 400

DV 500

Off-air digital TV 720

High definition 1920