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A simple and effective mechanism for stored video streaming with TCP transport and server-side adaptive frame discard

机译:一种使用TCP传输和服务器端自适应帧丢弃的简单有效的存储视频流机制

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摘要

Transmission control protocol (TCP) with its well-established congestion control mechanism is the prevailing transport layer protocol for non-real time data in current Internet Protocol (IP) networks. It would be desirable to transmit any type of multimedia data using TCP in order to take advantage of the extensive operational experience behind TCP in the Internet. However, some features of TCP including retransmissions and variations in throughput and delay, although not catastrophic for non-real time data, may result in inefficiencies for video streaming applications. In this paper, we propose an architecture which consists of an input buffer at the server side, coupled with the congestion control mechanism of TCP at the transport layer, for efficiently streaming stored video in the best-effort Internet. The proposed buffer management scheme selectively discards low priority frames from its head-end, which otherwise would jeopardize the successful playout of high priority frames. Moreover, the proposed discarding policy is adaptive to changes in the bandwidth available to the video stream. © 2004 Elsevier B.V. All rights reserved.
机译:传输控制协议(TCP)及其完善的拥塞控制机制是当前Internet协议(IP)网络中用于非实时数据的主要传输层协议。期望使用TCP来传输任何类型的多媒体数据,以便利用互联网上TCP背后的广泛操作经验。但是,TCP的某些功能(包括重传以及吞吐量和延迟的变化)虽然对非实时数据没有灾难性,但可能会导致视频流应用程序效率低下。在本文中,我们提出了一种架构,该架构由服务器端的输入缓冲区以及传输层的TCP拥塞控制机制组成,用于在尽力而为的Internet中高效地流存储的视频。所提出的缓冲器管理方案从其前端选择性地丢弃低优先级帧,否则将危及高优先级帧的成功播出。此外,所提出的丢弃策略适应于视频流可用带宽的变化。 ©2004 Elsevier B.V.保留所有权利。

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