A practical server-side transmission control method for multi-channel DTV streaming system

Authors:
Yuanhai Zhang;Wei Huangfu
Affiliations:
Institute of Software, Chinese Academy of Sciences, Beijing, China and Graduate University of Chinese Academy of Sciences, Beijing, China;Institute of Software, Chinese Academy of Sciences, Beijing, China
Venue:
PCM'07 Proceedings of the multimedia 8th Pacific Rim conference on Advances in multimedia information processing
Year:
2007

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Abstract

In this paper, we propose a practical design and implementation of multi-channel High Definition (HD) and Standard Definition (SD) MPEG-2 video streaming system using server-side video rate adaptation and rate shaping over digital community network. For video rate adaptation, we employ Program Clock Reference (PCR) embedded in the MPEG-2 streams to enhance packet timing control precision and regulate the transmission rate in a refined way. For rate shaping, we introduce Traffic Control (TC) ingeniously to separate streams of different channels at the network card of server and avoid bandwidth contesting between them. Experimental results show that the proposed system can mitigate the quality degradation of video streaming due to the fluctuations of time-varying channel and simultaneously support 33-channel HDTV streams.