MPEG-21: The 21st century multimedia framework

Bormans, J.; Gelissen, Jean; Perkis, Andrew

doi:10.1109/msp.2003.1184339

Cited by 87 publications

(54 citation statements)

References 4 publications

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“…Metadata description can be done through the MPEG-21 standard [10]. The tools offered by the standard include the Usage Environment Description Tool (UEDT) [2] to describe device capabilities, network conditions, and user characteristics as well as the natural environment characteristics. The processing and transformations of this metadata can be accomplished using Extensible Stylesheet Language Transformation (XSLT) [5].…”

Section: Proposed Systemmentioning

confidence: 99%

“…Offline bitstream transcoding is in essence scalable coding [2]. Multiple scaled copies of the same media are encoded and stored on the content server.…”

Section: Proposed Systemmentioning

confidence: 99%

“…Conventional eL applications such as ePresence cannot support multimedia delivery that adapts to unique device and network conditions. In light of this fact, there is a growing aspiration for a Universal Multimedia Access (UMA) Framework [2] that provides seamless access of multimedia to anyone, at anytime, by adapting eL content to unique device capabilities, unreliable IP networks, and user personal preferences.…”

Section: Introductionmentioning

confidence: 99%

“…Lastly, we address the challenge of delivering a given quality of experience [2] to the end user. This involves negotiation of a Quality of Service (QoS) based on personal preferences and preferred modality.…”

Section: Introductionmentioning

confidence: 99%

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Scalable e-Learning Multimedia Adaptation Architecture

Almaoui

Plataniotis

2005

Lecture Notes in Computer Science

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Abstract.A neglected challenge in existing e-Learning (eL) systems is providing access to multimedia to all users regardless of environmental conditions such as diverse device capabilities, the heterogeneity of the underlying IP network, and user modality preference. This paper proposes a novel two-tier transcoding framework capable of adapting eL multimedia to meet the end-user environmental challenges. This two-tier architecture consists of 1)an application layer transcoder that adapts the presentation format of the eL content as viewed in a browser to meet device capabilities and user modality preference, 2) a bitstream transcoder that transforms multimedia streams to conform to the device's processing capabilities and to adapt the encoding rate to meet the network's fluctuating bandwidth. Results demonstrate the eL multimedia transcoding for mobile devices and its low overhead delays.

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Section: Proposed Systemmentioning

confidence: 99%

“…Offline bitstream transcoding is in essence scalable coding [2]. Multiple scaled copies of the same media are encoded and stored on the content server.…”

Section: Proposed Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Scalable e-Learning Multimedia Adaptation Architecture

Almaoui

Plataniotis

2005

Lecture Notes in Computer Science

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“…MPEG-21 is a new multimedia framework from the Moving Pictures Expert Group (MPEG) that supports multimedia access and delivery using heterogeneous networks and terminals in an interoperable and highly automated manner [2]. Here we discuss only the parts relevant to our application.…”

Section: Mpeg-21mentioning

confidence: 99%

Dynamic resource adaptation in a heterogeneous peer-to-peer environment

Rong

Burnett

Second IEEE Consumer Communications and Networking Conference, 2005. CCNC. 2005

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This paper focuses on metadata-based, multimedia resource representation and retrieval in a P2P environment as a means of universal multimedia access (UMA). The primary focus of the work is a P2P architecture, which uses MPEG-21 as standards based technique to dynamically adapt resources to various usage environments. In the architecture, a super peer based approach is used to cluster peers, store peer information, perform searches and instruct peers to adapt/send resources. Also a two-stages based adaptation method is introduced to adapt search results and resources in an intelligent manner based on the usage environment attributes. The concept is demonstrated using a test-bed built based on the JXTA peer-to-peer framework. In addition, simulation results show that the proposed architecture reduces download time while increasing resource availabilities and download speed in the network when compared to traditional P2P systems. Abstract-This paper focuses on metadata-based, multimedia resource representation and retrieval in a P2P environment as a means of Universal Multimedia Access (UMA). The primary focus of the work is a P2P architecture which uses MPEG-21 as a standards based technique to dynamically adapt resources to various usage environments. In the architecture, a super peer based approach is used to cluster peers, store peer information, perform searches and instruct peers to adapt/send resources. Also a two-stages based adaptation method is introduced to adapt search results and resources in an intelligent manner based on the usage environment attributes. The concept is demonstrated using a test-bed built based on the JXTA peer-to-peer framework. In addition, simulation results show that the proposed architecture reduces download time while increasing resource availabilities and download speed in the network when compared to traditional P2P systems.

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