| With the rapid development of the Internet and broadband technology matures, network video-on-demand in the various sectors of society more and more attention. Dissemination of technical advantages of the use of the Internet and flexible dissemination of ideas to achieve the strong association of radio and television and the Internet, complementary advantages, which occupied the commanding heights of modern communication technologies and publicity initiative, network radio and television in the age of the Internet and the key to winning development opportunities is also the only way for the development of radio and television in the Internet age.The VOD system developed after more than a year of development, the use of intelligent streaming technology and dynamic can be encoded streaming technology, can be achieved on any network resources on-demand, meet the school asynchronous learning and entertainment-on-demand needs; through state-of-the-art technology, the broadcast can be achieved classic classroom meetings, presentations, portable mobile live video broadcast; video broadcast technology, can be achieved video multicast establish the campus television station; upload resources distributed rights management, audit, classification, the authorized open, evaluation, statistics, and other integrated management application; customization capabilities through strong management, system interface, part customized content customized to meet the individual needs of all types of schools.This article is based on full research and analysis of the development mode of the video-on-demand system, combined with the development of colleges and universities video-on-demand system the actual situation and the reality of the need to complete the development of video-on-demand system architecture, business model, functional analysis, performance requirements, the project feasibility, expected to carry out detailed research and summarize, a comprehensive system to complete the system development of video-on-demand system. The system developed strictly follow the software engineering quality control specifications, Google coding standards, system security norms national software development standards, drilldown from the overall design to detailed design, clear structure, chromatography distinct. System, including system settings, general management, user management, maintenance charges, tariff management, information management, log management sub-function modules, each subsystem contains a number of functions. The clear demand positioning business unit divided reduce system development risk, and ensure that the system functions to meet the practical needs. System UI design using advanced UI interface analysis method, based on the UI design process to complete the work of the whole system design of man-machine interface, attractive interface, improved functionality.Relying on the development framework for the system development. NET Framework, and ASP. NET technology, can be completed quickly develop rich Web Component base class library. The overall system architecture uses B/S multi-tier architecture based systems based on WEB presentation layer, business logic, database interface layer, database layer, multi-layer system architecture based on standard protocol for streaming media services using MMS (MICROSOFT MEDIA SERVER) can different user levels depending on network performance, quality and flow of on-demand services. In response to the high number of concurrent users access to video data, the system uses the cluster service architecture, system deployment architecture uses the Web server, application server, data server distributed deployment. Hierarchical manner reduces the degree of coupling between the layers, the data interface layer using ADO.NET achieve the separation of the database access control and application logic, so that the system has excellent scalability, and reliability. |
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