版本：
文件：
-
https://cdn.bootcdn.net/ajax/libs/videojs-contrib-quality-levels/4.1.0/videojs-contrib-quality-levels.cjs.js
-
https://cdn.bootcdn.net/ajax/libs/videojs-contrib-quality-levels/4.1.0/videojs-contrib-quality-levels.cjs.min.js
-
https://cdn.bootcdn.net/ajax/libs/videojs-contrib-quality-levels/4.1.0/videojs-contrib-quality-levels.es.js
-
https://cdn.bootcdn.net/ajax/libs/videojs-contrib-quality-levels/4.1.0/videojs-contrib-quality-levels.es.min.js
-
https://cdn.bootcdn.net/ajax/libs/videojs-contrib-quality-levels/4.1.0/videojs-contrib-quality-levels.js
-
https://cdn.bootcdn.net/ajax/libs/videojs-contrib-quality-levels/4.1.0/videojs-contrib-quality-levels.min.js