22-02-2017, 09:35 AM
MPEG-4 is a method for defining audio and visual (AV) compression of digital data. It was introduced at the end of 1998 and a standard was appointed for a group of audio and video coding formats and related technology agreed by the ISO / IEC (MPEG) Moving Images Expert Group (ISO / IEC JTC1 / SC29 / WG11 ) Under the formal standard ISO / IEC 14496 - Coding of audiovisual objects. MPEG-4 uses include AV data compression for web (streaming media) and distribution of CD, voice (phone, videophone) and television television applications. Technological developments in network technology and computers make it possible to use video. Storing and transmitting uncompressed raw video is not a good idea, it requires large storage space and bandwidth. Special algorithms that take into account the characteristics of the video can compress the video with a high compression ratio. In this article I will give an overview of standardisation efforts in video compression: MPEG-1, MPEG-2, MPEG-4, MPEG-7, and I will explain the current video compression trends briefly.