https://cdn.jsdelivr.net/npm/xterm@4.19.0/css/xterm.css https://vjs.zencdn.net/8.10.0/video-js.css https://vjs.zencdn.net/ie8/1.1.2/videojs-ie8.min.js https://cdn.jsdelivr.net/npm/xterm@4.19.0/lib/xterm.js https://vjs.zencdn.net/8.10.0/video.min.js
come from https://github.com/googlecodelabs/webrtc-web