Check if YouTube video is playing and run script

Question

I have the following video embeded within WordPress

But with a couple changes. It needs to have an ID, 'player', and you need to append ?enablejsapi to the end of the source URI.

You'll then need to run the following script to load the API JS as well as creat the player

// 2. This code loads the IFrame Player API code asynchronously.
      var tag = document.createElement('script');
      tag.src = "http://www.youtube.com/player_api";
      var firstScriptTag = document.getElementsByTagName('script')[0];
      firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);

  // 3. This function creates an