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Practical DV Filmmaking, 2nd Edition by Russell Evans

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Glossary of film and video terms

 

4:1:1 A way of measuring the ratio between brightness signal and colour signals. This ratio is the smallest and is roughly 50 per cent of the value of 4:2:2 in terms of horizontal colour resolution (vertical colour resolution remains the same). Panasonic’s DVC Pro uses this ratio.

4:2:0 This sampling ratio is very similar to 4:1:1, except that it is the vertical colour resolution values which are reduced by 50 per cent, while the horizontal remains the same.

4:2:2 This is a higher quality resolution used by many high-end cameras, including Digital Betacam and Sony’s DVC Pro 50. Resolution is about twice the value of 4:1:1 or 4:2:0.

4:4:4:4 This sampling rate is as high as 4:2:2 but has an additional Key signal. ...

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