workoutcompletion.comp.js

   // workout-completion.page.ts
   public vidState1 = 'previous';
   public vidState2 = 'current';
   public vidState3 = 'next';
   @ViewChild('video1') video1;
   @ViewChild('video2') video2;
   @ViewChild('video3') video3;
   // Setup Video Buffer Array, which will contain the urls that we wish to load into each video element
   public videoBuffer: Array<any> = [this.emptyVideo, this.emptyVideo, this.emptyVideo];
   public emptyVideo = {
     url: '',
     thumbnail: {
       url: 'default_url'
     }
   };