MPEG-21 (.m21 or .mp21) , standardized as ISO/IEC 21000, creates descriptions for a multimedia framework to provide a ‘big picture’ of how the system elements relate to each other and fit together. The resulting open framework for multimedia delivery and consumption includes content creators and content consumers as focal points to give creators and service providers equal opportunities in an MPEG-21 open market. This can also give the consumers access to a large variety of content in an practical manner. MPEG-21 defines a Digital Item as a basic unit of transaction. It is a structured digital object, including a standard representation, identification and metadata.