一种基于IP网络流媒体传输的码流平滑算法  

A New Rate Smoothing Algorithm Based on IP Streaming

作　　者：储开颜[1] 张文军[1] 张正华[1] 古继兴[1] 

机构地区：[1]上海交通大学图像通信与信息处理学院,上海200030

出　　处：《计算机工程》2004年第19期1-3,共3页Computer Engineering

摘　　要：提出了一个视频点播解决方案,给出了服务器和客户机的系统实现和工作时序,重点描述了基于客户机预测分段的码流平滑实现机制(PPSA),包括理论模型和实验仿真结果。它有效地屏蔽了解码器读取码流速率的抖动,使得服务器输出码流速率平稳,减少了对网络的冲击。该方案适用于对延迟不敏感的视频点播系统。This paper proposes a streaming solution suited for delay-insensitive application such as video-on-demand. It addresses the implementation and the working sequence of both the server and the client. The rate smoothing algorithm based on client, which is called prediction- piecewise-smoothing-algorithm (PPSA), is stated in detail. It shields the jitter and ensures that the streaming output from the server is flat and stable, which lessens impact to the network.

关 键 词：MPEG4 流媒体 码流平滑 视频点播 视频压缩 

分 类 号：TP372[自动化与计算机技术—计算机系统结构]