Video.js给出了错误＆＃34; youtube＆＃34;播放YouTube视频时未定义

Question

 @Component({
 selector: 'invidz-video-js-component',
 template: `
<div id="full-background">
  <video
    id="vid"
    class="video-js vjs-default-skin vjs-fullscreen vjs-big-play-centered"
    controls
    data-setup='{ "techOrder": ["youtube"]}'
  >
    <source  type="video/youtube" [src]="videoUrl"/>
  </video>
</div>
`,
   `]
    })
    export class VideoJsComponent implements OnInit, AfterViewInit {

   @Input() videoUrl: string;
  @Input() autoPlay: string;


private player: any;


 constructor() {

}

ngOnInit() {
console.log(this.autoPlay);
console.log(this.videoUrl);
}

ngAfterViewInit() {
  this.player = videojs(document.getElementById('vid'));
 this.player.on('ended', function() {

  });
 }
}

Video.js会出错＆＃34; youtube＆＃34;播放YouTube视频时未定义

错误：

  

video.es.js：439 VIDEOJS：错误：＆＃34; youtube＆＃34;技术未定义。   跳过浏览器支持检查该技术。