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20.3. Compression

Digital video wouldn't be possible without methods for compressing the vast amounts of data necessary to describe sound and frame images. Video files can be compressed in a number of different ways. This section looks at a variety of compression schemes and introduces the methods they use for achieving compression rates.

20.3.1. Lossless versus Lossy Compression

Compression can be "lossless," which means no information is lost and the final file is identical to the original.


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