Technology Acquisition And Implemention Of Large-Scale Multi-Protocol-Based Network Video Data

Video and audio accessing technology is based on the known resource locator to get video and audio technology through the specific transport protocol. Now widely used transport protocol, although reliable data transmission can be achieved, but in terms of real-time video and audio data is not perfect. General terms of data transfer protocol for packet loss, leaked packages were too much processing to ensure the reliability of the transmission, but in terms of real-time transmission there is a certain lack of, and the real-time transport protocol described in this paper is mainly to overcome these difficulties. Now for the transmission of real-time data has produced a number of different solutions, but these agreements are from different vendors, and have not been widely used.This issue is by now some of the video and audio transmission protocol analysis, to achieve these data transmission protocol relies on the transmission of different types can be video and audio data is acquired. The main results of this study are as follows:First, for a variety of video and audio transmissions were studied, including the conventional transmission data and streaming media. Details of the work processes and the working principle of these agreements, and analysing the composition of streaming media data packets and response process.Secondly, to achieve the streaming media protocols such as MMS, RTMP, RTSP protocols such as transmission. Each protocol has its own state machine; the state machine of each transition has a specific trigger condition. This thesis is according to the state machine transitions way to achieve these agreements on the basis of different video and audio transmission of data. The main achievement are the HTTP/FTP multithreading and endpoint Resume function, RTMP, RTSP, and MMS protocol transmission scheme clients, and integrate these functions into a download module, and to improve the project through the disk cache daemon thread and other functions for the purpose of efficiency and robustness.