title: MP4 is downloading instead of playing
body: <p>MP4 files are sometimes downloaded, and other times they play in the browser.</p>
  
  <p>What is the difference between these two links? </p>
  
  <p>1) If you open this URL in Chrome, the video will download:</p>
  
  <p><a href="http://video.video-mall.com/video_mall/400241188377_video.mp4" rel="noreferrer">http://video.video-mall.com/video_mall/400241188377_video.mp4</a></p>
  
  <p>2) If you open this URL on Chrome, the video will play in the browser:</p>
  
  <p><a href="http://www.simplethoughtproductions.com/wp-content/uploads/SimpleShorts/Morning_Mail/morning_mail.mp4" rel="noreferrer">http://www.simplethoughtproductions.com/wp-content/uploads/SimpleShorts/Morning_Mail/morning_mail.mp4</a></p>
  
  <p>Why is that? </p>