Video stream downloading method, device, equipment and system

Abstract

The invention discloses a video stream downloading method, device, equipment and system, and the method comprises the steps: downloading a first video sub-stream subscribed by a first peer node from acontent delivery network; downloading a second video sub-stream from a second peer node subscribing for the second video sub-stream in the peer-to-peer network; when it is determined that downloadingof the second video sub-stream fails, selecting a peer node downloading the second video sub-stream from the peer-to-peer network as a third peer node; downloading the second video sub-stream from the third peer node; and playing a video stream composed of the first video sub-stream and the second video sub-stream. According to the technical scheme provided by the invention, the occupation of theCDN bandwidth can be reduced, the bandwidth cost is saved, and the video stream can be downloaded in time and played smoothly.

Description

technical field [0001] The present invention relates to the technical field of the Internet, and relates to a video stream downloading method, device, equipment and system, and in particular to a video stream patching method. Background technique [0002] At present, with the development and popularization of Internet technology, streaming media (streaming media) technology has been proposed and widely used for real-time multimedia transmission in the network, such as the application field of live broadcast. [0003] Generally, a content delivery network (Content Delivery Network, CDN) technology and a peer-to-peer network (Peer to Peer, P2P) can be applied to provide distribution and delivery of streaming media services. [0004] In a specific application, a peer-to-peer network technology may be used to split the rectification of the video stream into several sub-streams. Such as, figure 1 For the schematic diagram of dividing the rectification into 4 sub-flows, refer to...

AI Technical Summary

Problems solved by technology

[0007] However, the core of CDN is still based on the client / server structure. When the peer nodes in the peer-to-peer network frequently have no P2P data or the P2P data is incomplete, it is necessary to frequently patch from the CDN, that is, when the CDN is at its peak , which increases the bandwidth cost of the CDN, affects the timely download of the video stream, and makes the playback of the video stream prone to lag

In other words, there are certain defects in CDN's adaptability and fault tolerance to burst traffic.

Images