Reference links:
https://www.cnblogs.com/afrog/p/6689179.html
VideoJS CSS styles, and here I provide some links BootCdn
cdn.bootcss.com/video.js/5.11.2/alt/video-js-cdn.min.css
VideoJS JS script, the above link BootCdn
cdn.bootcss.com/video.js/5.11.2/alt/video.novtt.min.js