May 2013
Beginner to intermediate
352 pages
10h 6m
English
The number 444 refers to the luminance (light) and chrominance (color) compression (brightness and color) (see Figure A4.1).

FIGURE A4.1 Chroma-luminance bandwidth illustration, where a 4:4:4 has no subsampling (each pixel contains the full luminance and chrominance value). In a 4:2:2 subsampling, half the pixels contain full luminance and chrominance value, while the remaining half contain luminance. (http://lea.hamradio.si/~s51kq/V-BAS.HTM.)
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