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codec
Last modified: Tuesday, January 20, 2004 

(1) Short for compressor/decompressor, a codec is any technology for compressing and decompressing data. Codecs can be implemented in software, hardware, or a combination of both. Some popular codecs for computer video include MPEG, Indeo and Cinepak.

(2) In telecommunications, (short for coder/decoder) a device that encodes or decodes a signal. For example, telephone companies use codecs to convert binary signals transmitted on their digital networks to analog signals converted on their analog networks.

(3) The translation of a binary value into a voltage that can be transmitted over a wire.

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Related Links

The Almost Definitive FOURCC Definition List
This site contains descriptions of RGB and YUV pixel formats used by Video for Windows, DCI and DirectDraw. Also included is a list of AVI codec FOURCCs and links to sites offering codec information or downloads.

related categories

Communications

Data Compression

related terms

AAC

Cinepak

Indeo

MPEG

MPEG-4

QuickTime

Video for Windows

wavelet

wavelet compression


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