A part of the program which understands a type of video or audio (short for Coder/Decoder or Compression/Decompression). DivX and Theora are examples of video codecs; MP3 and Vorbis are audio codecs. The output stream produced when a codec to audio or video is generally "muxed" into a container format, such as AVI or Ogg. As certain codecs are often associated with certain container formats, the n