The term “codec” is a portmanteau of “coder-decoder”. This neatly encapsulates the essential function of a codec, which is to encode or decode digital data. A codec can either compress data to make transmissions faster, or decode data once received. Codecs are mainly used for audio and video files. They are important in transmitting and playing a video file effectively. Having insufficient or the wrong types of codecs can make an audio/video file misbehave or unable to be played.
Codecs can be transcoded and used to convert the audio/video file into different formats. For this task and others like it, Transcoder is a great fit.