Video communication method based on P2P network

Abstract

The invention discloses a method for video communication in a P2P network comprising a plurality of communication terminals. The method comprises the following steps: video data are hierarchically coded in each communication terminal to form coded base-layer data streams and coded enhancement-layer data streams; the coded base-layer data streams and the coded enhancement-layer data streams in the communication terminals are respectively sent by a secure communication channel and an insecure communication channel, wherein the secure communication channel is confirmed by the communication terminals while the insecure communication channel is confirmed by P2P network dynamics; all the terminals can only decode the coded base-layer data streams of other terminals. Adopting the communication method of the invention, the overall transmission capability of the P2P network can be fully utilized while the security of multi-party video communication is guaranteed.

Description

technical field [0001] The invention relates to an implementation scheme of multi-party video communication, in particular to a video communication method based on a P2P network, which can fully utilize the overall transmission capability of the P2P network while ensuring security. Background technique [0002] Under the existing network conditions, a major bottleneck for multi-party video communication is network bandwidth, and the P2P network architecture effectively solves the impact of insufficient bandwidth. However, since any node in the P2P network, including nodes that do not participate in video communication, may obtain video content, one of the main problems faced by using P2P architecture to realize video communication is the security of video content, that is, video communication. The content is readily available to third parties not participating in the video communication. [0003] In addition, in a P2P network, considering that the computing power of termina...

AI Technical Summary

Problems solved by technology

However, since any node in the P2P network, including nodes that do not participate in video communication, may obtain video content, one of the main problems faced by using P2P architecture to realize video communication is the security of video content. content is readily available to third parties not participating in the video communication

[0003] In addition, in P2P networks, considering that terminals, especially handheld devices, generally have relatively weak computing power, it is often impossible to use complete data encryption to protect video content.

Moreover, with the increase of the number of nodes participating in video communication, even desktops or notebooks are difficult to cope with the real-time requirements of encryption / decryption video communication

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