MPEG-4 Visual
Introduction
MPEG-4 Visual is an encoding and compression system for digital multimedia content defined by the Motion Pictures Expert Group (MPEG). MPEG-4 is an ISO/IEC 14496standard developed by MPEG. MPEG-4 builds on the proven success of three fields: Digital television; Interactive graphics applications (synthetic content); and Interactive multimedia (World Wide Web, distribution of and access to content). MPEG-4 provides the standardized technological elements enabling the integration of the production, distribution and content access paradigms of the three fields.
MPEG-4 Visual
Introduction
MPEG-4 Visual is an encoding and compression system for digital multimedia content defined by the Motion Pictures Expert Group (MPEG). MPEG-4 is an ISO/IEC 14496standard developed by MPEG. MPEG-4 builds on the proven success of three fields: Digital television; Interactive graphics applications (synthetic content); and Interactive multimedia (World Wide Web, distribution of and access to content). MPEG-4 provides the standardized technological elements enabling the integration of the production, distribution and content access paradigms of the three fields.
A universal language across applications
MPEG-4 is meant to become the universal language between broadcasting, movie and multimedia applications. It will provide additional functionality over simple media compression, like bitrate scalability, object-based representation.
MPEG-4 does this by providing standardized ways to: (1) represent units of aural, visual or audiovisual content, called "media objects". These media objects can be of natural or synthetic origin; this means they could be recorded with a camera or microphone, or generated with a computer; (2) describe the composition of these objects to create compound media objects that form audiovisual scenes; (3) multiplex and synchronize the data associated with media objects, so that they can be transported over network channels providing a QoS appropriate for the nature of the specific media objects; and (4) interact with the audiovisual scene generated at the receiver´s end.
