The Research And Realization On Key Technology Of Streaming Media Retransmission

The rapid development of internet technology and its relative hardware technology provide multicultural opportunity for the progress of streaming media technology. Multimedia technology has been the mainstream for the application of internet. Especially in recent years, the popularity of 3G network and mobile Internet make the mobile media possible. At the same time, it make the live media and network-on-demand of the mobile terminals realized easily. Network monitoring technology is generated with the development of streaming media, which making the video surveillance industry shifted from single point control to network digital control.In this paper, we illustrate the relevant technology of streaming media and give a detailed introduction of it. We analyses the present situation, significance, application of streaming media technology and its principle, character, transmit technology, protocol. And then we proposed our project.According to the basic project, we developed a streaming media transmission platform for Liaoning fishing administrative. This system was used for monitoring the fishing port and fishery administration ship on the sea. As streaming media transmission server occupies unique position in the whole system, we introduced design and realization process of the streaming media in detail with a separate chapter.In this chapter, we mainly introduced the design idea of the DVR-based front-end streaming media services, including its function composition, structure analysis and the realization combined with socket, multi-threaded, dual-channel and other key technologies. And then dwell on the achievement process of streaming media transmission server. We mainly analyzed the communication mode of server and client, the contact method of server and DVR, the application of SDK.After the streaming media server was built up, we introduced the design and realization of streaming media transmission server in detail. This system was built based on the combination of B/S and C/S. The main function of B/S was finished the information issue of the video capture ports. With this B/S system, users can realize the trivial assignment of video capture ports and ports information. Considering the advantage of C/S on video streaming transmission, we developed a background transmission system based on transmission server. We established the C/S fame with the above streaming media transmission server combined with a portable streaming media player. Besides, we edited absolute base station query software to avoid the poll waiting of the client capturing the video points. The main purpose of this was put the latest information of the latest information on the fishery enforcement vessels to the base station IP address. And input the latest information to database which can be called by the front desk.The realization of this project materialized the transmission of the video data and the real-time network monitoring. System referred in this paper has been run on internet for the special users of fishing administrative, which assisted the protection of marine fisheries resources.