Abstract: MPEG-21 is an open standards-based framework for multimedia delivery and consumption. It aims to enable the use of multimedia resources across a wide range of networks and devices. Multimedia standards are MPEG-1 (1993), MPEG-2 (1996), MPEG-4 (1999), and MPEG-7 (2001). In this paper MPEG-21's parts, achievements, ongoing activities, and opportunities for new technologies and an overview of the video compression standards related to the MPEG family are discussed. MPEG-21 is mainly used for DRM. (Digital Rights Managements).

Keywords: Multimedia Framework, MPEG-1, MPEG-2, MPEG-4, MPEG-7, MPEG-21.