Turbo-slice-and-patch: An algorithm for metropolitan scale VBR video streaming
Publication in refereed journal

香港中文大學研究人員

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摘要In recent years, a number of sophisticated architectures have been proposed to provide video-on-demand (VoD) service using multicast transmissions. Compared to their unicast counterparts, these multicast VoD systems are highly scalable and can potentially serve millions of concurrent users. Nevertheless, these systems are designed for streaming constant-bit rate (CBR) encoded videos and thus cannot benefit from the improved visual quality obtainable from variable-bit rate (VBR) encoding techniques. To tackle this challenge, this paper presents a turbo-slice-and-patch (TSP) algorithm to support VBR video streaming in a multicast VoD system. Results obtained from trace-driven simulation of 300 VBR videos show that serving VBR videos with the TSP algorithm increases the average latency by only 9% compared to the CBR case with the same average video bit rate. Moreover, in 165 out of the 300 video titles, the TSP algorithm actually outperforms the CBR equivalent by shortening the latency by 0.04%-99%. Given that we can achieve similar visual quality by encoding VBR video at half the average rate of CBR video, this TSP algorithm can potentially serve VBR videos with more consistent visual quality and with less resource compare to CBR-based video streaming systems.
著者Kong CW, Lee JYB, Hamdi M, Li VOK
期刊名稱IEEE Transactions on Circuits and Systems for Video Technology
出版年份2006
月份3
日期1
卷號16
期次3
出版社IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
頁次338 - 353
國際標準期刊號1051-8215
電子國際標準期刊號1558-2205
語言英式英語
關鍵詞turbo-slice-and-patch (TSP); variable bit rate (VBR) video streaming; video multicast; video-on-demand (VoD)
Web of Science 學科類別Engineering; Engineering, Electrical & Electronic; ENGINEERING, ELECTRICAL & ELECTRONIC

上次更新時間 2020-10-08 於 03:38