实现了用RTSP协议接入已有流媒体平台或摄像机的视频，通过转码后用WebRTC进行播放，只要支持WebRTC的浏览器或移动端都可以使用。用WebRTC播放监控视频可以处理高版本浏览器不支持插件的情况，且比rtmp、HLS的实时性更高。(It realizes accessing videos of existing streaming media platforms or cameras with RTSP protocol, and playing them with WebRTC after transcoding. It can be used by browsers or mobile terminals that support WebRTC. Playing surveillance video with WebRTC can deal with the situation that high version browsers do not support plug-ins, and it is more real-time than RTMP and HLS.)