Translator Disclaimer
22 December 2000 Stream-bundling approach to provide video services over broadband networks
Author Affiliations +
In traditional near-VOD (NVOD), the number of streams required is still high if the user delay goal is low (say, 2 minutes). In this paper, we study the use of client buffering to reduce the bandwidth requirement given a certain maximum user delay goal. Driven by the observation that broadband networks to the home has become a reality, we propose a broadcasting scheme termed 'stream-bundling,' which proves to be effective for popular movies. The scheme groups (i.e., 'bundles') the server streams into channels of incrementally increasing bandwidth. Such high-speed bundled channels are used to deliver the beginning segment of a video to the client so that it can merge with an on-going multicast stream quickly. By comparing with other previously proposed broadcasting schemes such as Pyramid Broadcasting, Skyscraper Broadcasting and Harmonic Broadcasting, stream -bundling is shown to achieve similar level of performance with much lower complexity (without many channels to manage and to hop). We then obtain the minimum request rate of a movie under which such stream-bundling technique should be used over the one-stream-per-request approach. By considering a video system, we show that the bandwidth requirement of a system can be reduced significantly as compared with the traditional NVOD (by more than 50%), with the cost of only little client buffering (<EQ 20% of the movie length).
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
S.-H. Ivan Yeung and S.-H. Gary Chan "Stream-bundling approach to provide video services over broadband networks", Proc. SPIE 4312, Multimedia Computing and Networking 2001, (22 December 2000);

Back to Top