Abstract
The increasing popularity of streaming video is a cause for concern for the stability of the Internet because most streaming video content is currently delivered via UDP, without any end-to-end congestion control. Since the Internet relies on end systems implementing transmit rate regulation, there has recently been significant interest in congestion control mechanisms that are both fair to TCP and effective in delivering real-time streams. In this paper we design and implement a protocol that attempts to maximize the quality of real-time MPEG-4 video streams while simultaneously providing basic end-to-end congestion control. While several adaptive protocols have been proposed in the literature 20,27, the unique feature of our protocol, the Video Transport Protocol (VTP), is the use of receiver side bandwidth estimation. We deploy our protocol in a real network testbed and extensively study its behavior under varying link speeds and background trafic profiles using the FreeBSD Dummynet link emulator 23. Our results show that VTP delivers consistent quality video in moderately congested networks and fairly shares bandwidth with TCP in all but a few extreme cases. We also describe some of the challenges in implementing an adaptive video streaming protocol.
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Balk, A., Maggiorini, D., Gerla, M., Sanadidi, M. (2003). Adaptive MPEG-4 Video Streaming with Bandwidth Estimation. In: Marsan, M.A., Corazza, G., Listanti, M., Roveri, A. (eds) Quality of Service in Multiservice IP Networks. QoS-IP 2003. Lecture Notes in Computer Science, vol 2601. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-36480-3_38
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DOI: https://doi.org/10.1007/3-540-36480-3_38
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