moodle: video-js youtube view only

moodle-video-js-youtube.js

// moodle/media/player/videojs/classes/plugin.php 

var styles = document.createElement("style");
styles.innerHTML = "\
.vjs-youtube .vjs-tech {\
  pointer-events: none !important; \
}\
.vjs-youtube .vjs-big-play-button { \
  position: absolute; \
  left: 50%; \
  top: 50%; \
  transform: translate(-50%, -50%); \
  transition: none;\
}\
.vjs-youtube-mobile .vjs-big-play-button {\
  display: block;\
}\
.vjs-controls-disabled .vjs-big-play-button, \
.vjs-has-started .vjs-big-play-button, \
.vjs-using-native-controls .vjs-big-play-button, \
.vjs-error .vjs-big-play-button {\
  display: none;\
}\
";
(document.head || document.getElementsByTagName('head')[0]).appendChild(styles);