Because of the limitation of video sources and deficient VCR support, Video-On-Demand (VOD in short) based on the P2P network is not applied widely.

• 基于P2P的流媒体点播系统,由于实时点播和拖动等VCR操作没有得到有效支持,以及用户不能随意发布节点等原因,没有得到广泛应用。