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Winn L. Rosch Hardware Bible, Sixth Edition by Winn L. Rosch

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Image Compression

Nothing eats memory and storage faster than full-motion, full-color video. The math is enough to make the manufacturers drool. Full-color video, which requires three bytes per pixel, at 640×480 resolution, equals nearly 1MB of digital data per frame. At the 30 frames per second used in the United States and most of the Western Hemisphere (or even the 25 frames per second standard in Europe and elsewhere), a video producer would easily use up 1GB of hard disk space in storing less than one minute of uncompressed digital video information.

Digital video systems with reasonable storage needs are possible only because of video compression, much as digital photographs are made more compact with image compression. Video compression ...

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