Abstract
Scalable video coding (SVC) is the most promising video format for applications of collaborative communication. MPEG-21 standard has newly emerged to enable the interoperability of multimedia delivery in heterogeneous environments. In this paper we study adaptation of SVC bitstream in the context of MPEG-21 multimedia framework. For interfacing SVC bitstream with MPEG-21 based adaptation system, we propose three SVC specific adaptation operators. Based on our previous work with multidimensional video adaptation, we present an effective approach, using MPEG-21 DIA AdaptationQoS description tool, to model QoS control for SVC adaptation. Then we show how the operator values could be computed from that representation. For the actual adaptation at bitstream level, we propose a procedure to remove the unnecessary NAL units from an SVC bitstream. The result of this study enables QoS management of SVC streaming in an efficient and standardized manner.
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Thang, T.C., Kim, Y.S., Ro, Y.M. et al. SVC bitstream adaptation in MPEG-21 multimedia framework. J. Zhejiang Univ. - Sci. A 7, 764–772 (2006). https://doi.org/10.1631/jzus.2006.A0764
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DOI: https://doi.org/10.1631/jzus.2006.A0764
Key words
- Multidimensional video adaptation
- Scalable video coding (SVC)
- MPEG-21 DIA (Digital Item Adaptation)
- QoS