Abstract
This paper addresses multimedia end user system design for content distribution over heterogeneous networks and terminals, with particular focus on End-to-End quality of service (QoS) control. A multimedia terminal comprising content-related metadata processor, usage environment characteristics provider, end user QoS monitor and H.264's extension Scalable Video Coding (SVC) audio-visual player in coordination under a terminal middleware, has been conceived and implemented. This end user terminal enables End-to-End QoS control for content adaptation solution both in semantic and physical approaches to maximize end user's perceptual experience and minimize resources. Such design approach illustrates a possible architecture for next generation multimedia end user terminal supporting MPEG-21 and H.264's extension SVC codec standards.

Abstract
With the advent of the World Wide Web (WWW), large volumes of multimedia content are now available on-line in multiple formats. Furthermore, with the proliferation in the mass market of a diversity of multimedia-enabled end-user devices, consumers increasingly expect to be able to access any kind of content anywhere and at any time, regardless of the capabilities of their terminals and the networks to which they are attached. Access to content that meets user expectations and demands, must take into account all the different aspects of this Peterogeneous environment. This paper describes the approach adopted within the European project ENTHRONE-2 to address this challenge. ENTHRONE-2 has conceived, designed and implemented a distributed platform, based on open standards, notably MPEG-21 and Web Services technologies, that supports the kind of network multimedia content access users expect. In particular, it focus on the ENTHRONE Integrated Management Supervisor, the entity that coordinates all the actions required for the provision of quality and context-aware, multimedia services to end-users.

Abstract
This paper addresses the inter-operability problem of multimedia terminal in media content delivery over heterogeneous networks and devices. We design and implement a terminal which includes a content browser providing presentation, navigation and interaction with MPEG-21 Digital Item Declaration (MPEG-21 DID) in order to support universal media access (UMA). We optimized the architecture in a client-server distributed approach with Web Service support. This terminal enables the MPEG-21 standard compliant content accessible on different terminal devices via common Web browsers. Such a design strategy illustrates a next-generation multimedia terminal supporting inter-operability in multimedia content adaptation over a heterogeneous delivery chain.

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