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QuickTime for Filmmakers by Richard Ferncase

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Appendix BGlossary

3:2 Pull-down. A method of converting 24 fps film to 30 fps NTSC (American standard) video in order to successfully enable viewing motion pictures in an electronic media format. This process adds approximately six duplicate fps to the film transferred. These pull-down frames—created by blending frames from the original source in a specific pattern—are considered undesirable for compressed movies.

4:1:1 Color. Refers to moderately compressed video color subsampling, in which the luminance channel is not subsampled but the resolution of the chrominance channel is reduced by 25%. Most DV formats, including miniDV, use 4:1:1 color.

4:2:0 Color. A form of moderately compressed video color subsampling similar to 4:1:1. Standard color ...

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