System and method for P2P video-on-demand based on RTSP

Abstract

The present invention discloses a system and a method for P2P (Peer to Peer) video-on-demand based on a RTSP (Real Time Streaming Protocol), and relates to the field of internet multimedia. The systemcomprises an STB, a content source station, a Tracker and a plurality of Peer nodes. When the STB sends a RTSP request to the content source station according to user video-on-demand, the request isintercepted, and the request is redirected to the Tracker; if the user video-on-demand is the video-on-demand for the first time, the Tracker returns a URL of the content source station to the STB forplay; when play is performed, the Tracker caches the corresponding RTSP content and distributes the RTSP content to a selected Peer; the Tracker records a storage relation of the Peers and the RTSP content to a Peer list; when the content is subjected to video-on-demand again, the Tracker searches a Peer list where all the fragments of the RTSP content are located, and the Peer node where the STBis located selects a Peer node request for outflow according to the Peer list. The system and the method for P2P video-on-demand based on the RTSP can achieve P2P dispatching in a condition that a user has no perception and can fully utilize storage spaces of the Peers so as to achieve load balance of the Peers and improve the cache capacity.

Description

technical field [0001] The present invention relates to the field of Internet multimedia, specifically a P2P (Peer to Peer, peer-to-peer network) on-demand system and method based on RTSP (Real Time Streaming Protocol, real-time streaming protocol). Background technique [0002] P2P service technology means that network participants share some of their hardware resources (processing capacity, storage capacity, network connection capacity, printers, etc.), these shared resources provide services and content through the network, and can be used by other peer nodes (Peer ) directly without going through an intermediate entity. Participants in this network are not only providers of resources, services and content (Server), but also acquirers of resources, services and content (Client). [0003] Around 2001, P2P traffic grew at an astonishing rate. By 2004, it surpassed the HTTP protocol application and became the most common application and main bandwidth consumer on the Intern...

AI Technical Summary

Problems solved by technology

The common feature of this type of equipment is that the storage capacity is small and the performance is insufficient, so that the existing P2P on-demand method has the following defects in realization:

However, the existing Peer storage devices usually have small storage capacity and insufficient performance, which limits the cache performance and affects the viewing quality of users.

[0008] (3) Due to the small storage capacity of existing Peer storage devices, the load of a single Peer is too large to carry large file storage

For example, if the content that the current user wants to watch is 5G in size, and the storage capacity of the Peer storage device is 1G, then the Peer storage device cannot complete the storage of the content file

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