Abstract
IPTV video services are under development for managed broadband networks, with ’last-mile’ delivery across wireless, ADSL or cable access networks. Delivering multiple video streams over a constrained channel often requires bitrate transcoders for bandwidth adaptation. This paper presents a bandwidth allocation scheme based on content complexity to equalize the overall video quality, in effect a form of statistical multiplexing. Complexity metrics serve to estimate the appropriate bandwidth share for each stream, prior to distribution over a wireless access network. These metrics are derived after entropy decoding of the input compressed bit-streams, without the delay resulting from a full decode. Fuzzy logic control serves to adjust the balance between spatial and temporal complexity metrics. The paper examines constant and varying bandwidth scenarios. Experimental results show a significant overall gain in video quality in comparison to a fixed bandwidth allocation.
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© 2012 ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering
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Moiron, S., Razavi, R., Fleury, M., Ghanbari, M. (2012). Statistical Multiplexing of Transcoded IPTV Streams Based on Content Complexity. In: Rodriguez, J., Tafazolli, R., Verikoukis, C. (eds) Mobile Multimedia Communications. MobiMedia 2010. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 77. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-35155-6_6
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DOI: https://doi.org/10.1007/978-3-642-35155-6_6
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