| With the increasingly demand for the IP Camera high-definltion, the development of NVR(Network Video Recorder) becomes faster and faster. The personage inside course of the video surveillance industry thinks it must be the development trend of network remote video monitoring in the future. In order to meet the demand for video surveillance systems and digital networks in the future market, NVR system with high-definltion video quality and efficient real-time transmission of video surveillance systems become major programs in the market, and also become market-oriented gradually. NVR network communication system is the core of real-time video surveillance of N VR system, it is the focus of the research. This article do research on NVR network communication system. Firstly, the article introduces the streaming mode and analyzes the RTP / RTCP transport protocol stack and H.264 encoded data encapsulation and transport mode in the RTP. Secondly, the article choses the Open Network Interface Standard ONVIF protocol to realize the communication between NVR and IPC, solve the access problem of IPC. Lastly, the article gives the system design framework and the main information interaction process.The research and design of NVR network communication systems in this paper is based on the Linux embedded platform, each module of the system uses the c++ programming language, the whole process implements the object-oriented thinking. The system has high portability, scalability and serviceability. The system realizes the transmission and forward of the network streaming media data, set parameters of IPC and NVR systems remotely and other services over the network. Based on these features, the paper also presents the system performance optimization, as well as dual-stream storage and playback of programs to achieve multi- network client code stream real-time preview and playback. Finally, experimental results show that the system can efficiently fulfill its function and has strong practicability. |
PDF Full Text Request