點對點影音串流服務在現在的社會中已愈來愈普及。但在目前所普遍使用的點對點影音串流軟體中，都只能隨著伺服端的播放進度來收看；而多數的論文與研究提出了可以在點對點環境中觀看隨選視訊的方法，但不能提供使用者倒轉、快轉、暫停等功能。本篇論文針對此現象，提出了一個點對點影音串流服務的架構來解決前述的問題。此架構可適用於現場性質的節目以及隨選視訊，並可提供使用者倒轉、快轉以及暫停的這些功能。在我們所做的實驗中，在合理的環境下使用者最多只需等待1.3秒就可完成這些功能的操作。

　　Peer-to-Peer streaming systems have a tendency to become more and more popular. Regrettably, most P2P streaming systems only provide live streaming, and do not support VCR-like functions, such as rewind, fast-forward, and pause. Most researches can only provide video-on-demand services without VCR-like operations. In this paper, we proposed a simple and efficient P2P streaming architecture, called P2PVR. P2PVR treats the entire P2P overlay as a large disk and utilize the storage resource at each participant. P2PVR can support both live streaming and pre-recorded programs, whether can be CBR and VBR. Moreover, P2PVR not only provides video-on-demand service, but also supports VCR-like operations. Through the results of the experiments, the maximum waiting time a client needs to spend for the P2PVR operations is 1.3 seconds in a near-real network environment.

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