A codec is a device or computer program capable of encoding or decoding a digital data stream or signal. The word codec is a portmanteau of "compressor-decompressor" or, more commonly, "coder-decoder". A codec (the program) should not be confused with a coding or compression format or standard – a format is a document (the standard), a way of storing data, while a codec is a program (an implementation) which can read or write such files. In practice, however, "codec" is sometimes used loosely to refer to formats.

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. A video camera's analog-to-digital converter (ADC) converts its analog signals into digital signals, which are then passed through a video compressor for digital transmission or storage. A receiving device then runs the signal through a video decompressor, then a digital-to-analog converter (DAC) for analog display. The term codec is also used as a generic name for a video conferencing unit.

Larry Jordan is an independent filmmaker who has been working in the Bay Area in California since 1955, and making films since 1952. He has produced some 40 experimental and animation films, and three feature-length dramatic films. He is most widely known for his animated collage films. In 1970 he received a Guggenheim Fellowship to make Sacred Art of Tibet. His animation has shown by invitation at the Cannes Film Festival. Jordan is one of the founding directors of Canyon Cinema Cooperative. He has shown films and lectured throughout the country. He is presently chairman of the film department at the San Francisco Art Institute.

"Jordan is one of the most prolific and accomplished stalwarts of the Bay Area independent film community. He takes full advantage of the tendency of disparate objects to take on new meaning, and form new relationships when they are brought into close proximity or when their usual context is changed. While these film collages link together a myriad of symbolic forms in new combination, the smooth, lyrical progression of the work results in a powerful sense of wholeness and totality." - Hal Aigner, San Francisco Chronicle^{[citation needed]}