基于Flash流媒体服务器的北大视频资源库的设计与实现

摘要

Video resource library made by independent research and development integrates more easily to the third party system in school. Flash streaming media server has been used to develop the video resource library in Peking University. The function modules include: user management, department management, curriculum management, video management. The live stream of the video camera can be stored in this library. The teaching video after the nonlinear editing can be uploaded to this library in browser through large file upload component which are independent research and development. Streaming permission control ensures that the camera can't send the video stream to the library until it passes through the authorization. Only the authorized third party system can reference the video resources of the streaming media server. For the school's seven major systems this library provides RTMP protocol video stream support, metadata management and content distribution.%自主研发视频资源库更易于和校内第三方系统集成。北大采用Flash流媒体服务器研发了视频资源库，功能模块包括用户管理，院系管理，课程管理，视频管理。摄像机的直播流能通过分布式转码自动存入北大视频资源库。后期经过非线性编辑的教学录像能通过自主研发的大文件上传控件从前台以 web 方式存入北大视频资源库。通过流权限控制保证了只有经过授权的摄像机才能向服务器端发送视频流，只有经过授权的第三方系统才能引用流媒体服务器的视频资源。北大视频资源库为校内七大系统提供RTMP协议的视频流支持、元数据管理和内容发布。