​This system is a set of video and audio transmission scheme based on IP network with the core of streaming media live broadcast system, on-demand system, recording system, super transcoding system, information management system, encoder and decoding terminal. The front-end prison broadcast system, set-top box signal and camera signal are connected through the encoder universal interface (hmdi / SDI). Real time coding and compression of streaming media package, push to the streaming media system. Complete live distribution, live recording and storage, through the management of information mana