title: MediaElement.js: How can I get percentage of time played (ej. 90%) in order count a complete visioned video
body: <p>I need count the number of times has seen a video, but when reach 90%.</p>
  
  <p>So, how can I get this percentage or read the total time and viewed time.</p>
  
  <p>Thanks in advance, and have a nice day.</p>