Bitstream syntax description-based adaptation in streaming and constrained environments

Devillers, S.; Timmerer, Christian; Heuer, Jörg; Hellwagner, Hermann

doi:10.1109/tmm.2005.846794

Cited by 51 publications

(35 citation statements)

References 9 publications

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“…XML descriptions of the high-level structure of media bitstreams tend to become verbose [10]. It is possible to efficiently compress the XML descriptions, but no generic solution exists to perform the transformation of the XML description in the compressed domain, despite a number of efforts being made in the past [28,31].…”

Section: Problems With Xml-based Format-independent Adaptation Systemsmentioning

confidence: 99%

Format-independent and metadata-driven media resource adaptation using semantic web technologies

et al. 2010

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Adaptation of media resources is an emerging field due to the growing amount of multimedia content on the one hand and an increasing diversity in usage environments on the other hand. Furthermore, to deal with a plethora of coding and metadata formats, format-independent adaptation systems are important. In this paper, we present a new format-independent adaptation system. The proposed adaptation system relies on a model that takes into account the structural metadata, semantic metadata, and scalability information of media bitstreams. The model is implemented using the Web Ontology Language (OWL). Existing coding formats are mapped to the structural part of the model, while existing metadata standards can be linked to the semantic part of the model. Our new adaptation technique, which is called RDF-driven content adaptation, is based on executing SPARQL Protocol And RDF Query Language (SPARQL) queries over instances of the model for media bitstreams. Using different criteria, RDF-driven content adaptation is compared to other adaptation techniques. Next to real-time execution times, RDF-driven content adaptation provides a high abstraction level for the definition of adaptations and allows a seamless integration with existing semantic metadata standards.

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Section: Problems With Xml-based Format-independent Adaptation Systemsmentioning

confidence: 99%

Format-independent and metadata-driven media resource adaptation using semantic web technologies

et al. 2010

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“…the I-frame) is always ttanscoded. [36]. In their framework, the authors emphasized on BSD based adaptation applying BS Schema and BSDtoBin processors.…”

Section: Video Adaptationmentioning

confidence: 99%

An architecture for federated video processing and online streaming

Iqbal¹

2010

SIGMultimedia Rec.

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Today access to video is available via numerous multimedia enabled devices through a wide variety of network types. What is required is a mechanism to ensure that users can receive different qualities of video proportional to their device capabilities and network conditions. In this thesis, we propose an online adaptive video streaming approach which uses the Peer-to-Peer (P2P) paradigm to not only distribute the content using peers' bandwidth, but also adapt the video using peers' processing power, while taking into account receiver heterogeneity, watermarking, and perceptual encryption.

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“…Thus, to solve this limitation and leverage the use of scalable multimedia formats, DIA defines a generic framework based on XML for bitstream adaptation [9] which offers coding format independence. In particular, DIA uses XML to describe the high-level structure of a bitstream, i.e., how it is organized in packets or layers of data.…”

Section: Bitstream Syntax Descriptionsmentioning

confidence: 99%

MPEG-21 Digital Item Adaptation

Timmerer¹,

Vetro²,

Hellwagner³

2008

Encyclopedia of Multimedia

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Definition: MPEG-21 Digital Item Adaptation (DIA) enables interoperable access to (distributed) advanced multimedia content by shielding users from network and terminal installation, management, and implementation issues. Context and ObjectivesUniversal Multimedia Access (UMA) [1] refers to the ability to seamlessly access multimedia content from anywhere, anytime, and with any device. Due to the heterogeneity of terminals and networks and the existence of various coding formats, the adaptation of the multimedia content may be required in order to suit the needs and requirements of the consuming user and his/her environment. For enabling interoperability among different vendors, Part 7 of the MPEG-21 Multimedia Framework [2], referred to as Digital Item Adaptation (DIA) [3], specifies description formats (also known as tools) to assist with the adaptation of Digital Items. Digital Items are defined as structured digital objects, including standard representation, identification and metadata, and are the fundamental units of distribution and transaction within the MPEG-21 framework. The concept of MPEG-21 DIA is illustrated in Figure 1. As shown in this figure, only tools used to guide the adaptation engine are specified by the standard. The adaptation engines themselves are left open to various implementations. However, description formats and format-independent mechanisms that provide support for the adaptation in terms of media resource adaptation, description adaptation, and/or Quality of Service (QoS) management are within the scope of the standardization, and are collectively referred to in Figure 1 as DIA tools.

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Bitstream syntax description-based adaptation in streaming and constrained environments

Cited by 51 publications

References 9 publications

Format-independent and metadata-driven media resource adaptation using semantic web technologies

Format-independent and metadata-driven media resource adaptation using semantic web technologies

An architecture for federated video processing and online streaming

MPEG-21 Digital Item Adaptation

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