Definizione di CODEC
Digital video contains huge amount of data and despite the increases in processor speed and disc storage capacity, it is still necessary to represent it in a more concise format. The compression of digital video is accomplished by a video CODEC (Compressor-Decompressor', 'Coder-Decoder', or 'Compression/Decompression algorithm'.), consisting of an encoder that compresses the original video signal and a decoder that reconstructs the original video based on the coded video sequence. Video CODECs is now widely used in video applications, such as video conferencing, video telephony, video streaming and mobile video phones.