Application layer multicast system and streaming media data processing method

Abstract

The invention discloses an application layer multicast system and a streaming media data processing method. The system comprises a kernel subnet and a marginal subnet, wherein the kernel subnet comprises a content management server and a group dispatch server; the marginal subnet comprises at least one marginal server group; the group dispatch server is connected with every marginal server group and is used for dispatching the marginal server group according to the load characteristic of every marginal server group and providing a dispatching result for the content management server; the content management server is connected with every margin server group and is used for providing a steaming media resource for every marginal server group according to the dispatching result; and the marginal server group is used for receiving a playing request of a user and providing steaming media data for the user corresponding to a playing request. Due to the adoption of the technical scheme of theinvention, bearing of high-definition, real-time and large-scale video live broadcasting services can be realized, and the problem that the requirement of instantaneity on a video live broadcasting service cannot be met in the prior art is solved.

Description

technical field [0001] The invention relates to network communication technology, in particular to an application layer multicast system and a streaming media data processing method. Background technique [0002] Streaming media technology is a technology that uses streaming to play audio, video and other multimedia data on the Internet. This technology allows users to watch programs while downloading, without having to download the entire file before watching. The rapid development of network bandwidth provides a solid network foundation for streaming media applications, among which live video broadcasting is one of the key points of streaming media applications. At present, the systems for carrying live video services on the Internet mainly include Client / Server (Client / Serves; C / S for short), Content Delivery Network (Content Delivery Network; CDN for short) mode and Peer to Peer Network (Peer to Peer; referred to as: P2P) mode. [0003] in, figure 1 It is a structural...

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Problems solved by technology

[0006] However, for high-definition, real-time, and large-scale live video services, the above-mentioned network systems all have shortcomings in the implementation: if a C / S mode system is used to carry the live video service, due to the large amount of data in the live video service, the server’s The burden is heavy, and there is a problem that the system cannot be expanded due to the server itself; in addition, multiple copies of the same streaming media data are transmitted on the Internet at the same time, which will occupy a large amount of network bandwidth and cause a waste of network bandwidth, that is, the C / S mode does not Suitable for carrying high-definition, real-time, large-scale live video services

However, due to the asynchronous sharing of data transmitted between P2P clients, it still cannot meet the real-time requirements of live video services.

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