https://github.com/tjenkinson/clappr-thumbnails-plugin/
https://github.com/andrefilimono/clappr-flvjs-playback
https://www.helloweba.net/javascript/572.html
https://www.jianshu.com/p/a5cb5293a136
https://github.com/clappr/clappr/
https://github.com/clappr/clappr/wiki/Embed-Parameters
http://clappr.github.io/modules/components.html