P2P streaming media-based secondary coding play method and system

Abstract

The invention discloses a P2P streaming media-based secondary coding play method, comprising the following steps: sending a play connection request to a neighbor node by an existing node and playing the streaming media; in the process of the play, estimating own receiving bandwidth in real time by the existing node; if a value of the receiving bandwidth is less than the preset value, requesting the neighbor node to perform the secondary coding on the played streaming media by the existing node; and after the neighbor node performs the secondary coding on the played streaming media and transmitting the streaming media after the secondary coding to the existing node. The invention also discloses a P2P streaming media-based secondary coding play system, which comprises a play request module,a receiving bandwidth estimation module, a secondary coding request module, a secondary coding module and a transmission bandwidth estimation module for the neighbor module. The invention avoids generating the problem of packet -missing, retransmission and packet-missing again under the condition that a client-side is limited by the receiving bandwidth, thus the client-side can enjoy continuous, steady and high-quality streaming media service.

Description

technical field [0001] The invention relates to the technical field of network streaming media transmission, in particular to a secondary encoding and playing method and system based on P2P streaming media. Background technique [0002] Peer-to-peer network (Peer to peer network) is an emerging network technology in recent years. Compared with the traditional C / S model, a very significant feature of the P2P model is that nodes do not need to rely on centralized server resources, and each node can communicate directly. Each node has the same status, it can request services, it can also provide services, it also plays the dual role of server and client in C / S mode, and can even have the functions of router and cache. In the P2P mode, since each node has the functions of client and server, each node sends data streams to other nodes while receiving data streams from other nodes. Due to this feature, P2P network technology is widely used in large-scale network streaming media p...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: how to avoid the problem of packet loss-retransmission-re-losing that cannot be played normally when the receiving bandwidth of nodes is limited during the live broadcast of P2P streaming media

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