Douglas Harper's Etymology Dictionary
by 1970, an abbreviation from compressor-decompressor or coder-decoder, on model of modem.
n. (context computing English) A device or program capable of performing transformations on a data stream or signal.
A codec encodes a data stream or signal for transmission, storage or encryption, or decodes it for playback or editing. Codecs are used in videoconferencing, streaming media, and video editing applications.
Codec may mean:
- An audio codec converts between analog and digital representations or performs data compression.
- Codec, a hardware device or computer software used for coding and decoding transformations of data or signal media streams
- Codec, a fictional radio device used in the Metal Gear games
- A video codec is a device or software that enables video compression and/or decompression for digital video.