Clicking on Michael Jackson video or Mission Impossible movie leads to…
Video display, but what is so special about these files? What is the data present in these files and how a player plays these files? The answer is Codec.
A codec is a software (at times also considered as hardware unit as set-top box attached with video conferencing system) which encodes or/and decodes a signal or digital media file such as song or video. Player use codecs to play and create digital media files.
CODEC = COder + DECoder
Codec is also referred as amalgamation of compression (encoding) function or/and decompression (decoding) function. But it is not necessary that a codec include both, some codecs only include one of them.
A codec is a critical component in the process of digital audio and video signal transmission.