the qualityLevels labes remain when src change common video

[R8KwEwN2hvrhY]

just like than

i use js like that to solve it

player.on('canplaythrough',function(){
  if (player.qualityLevels().length==0) {
        document.getElementsByClassName("vjs-http-source-selector vjs-menu-button vjs-menu-button-popup vjs-control vjs-button")[0].style.display = 'none';
        }
  else {
        document.getElementsByClassName("vjs-http-source-selector vjs-menu-button vjs-menu-button-popup vjs-control vjs-button")[0].style.display = 'block';
        };
    });