anchor.diff:      return canvas;
   }
   
  -// creates canvas element
  +// captures an image frame from video
   
   /**
    * Invokes the <code>capture</code> function and attaches the canvas element to the DOM.
  
positive.code:     var video  = document.getElementById(videoId);
      var output = document.getElementById('output');
      var canvas = capture(video, scaleFactor);
      //     canvas.onclick = function(){
      //         window.open(this.toDataURL());
      //     };
      snapshots.unshift(canvas);
      output.innerHTML = '';
      for(var i=0; i<4; i++){
  
negative.code: <!-- function is converting youtube url to embedded video player using javascript and mp4 download website  -->
  <script>
  
      // console.clear();
      var youtubeLink;
      var vidID;
  
  