title: How to code a video-preview for an embedded video link?
body: <p>I want to make a video preview of an embedded video link.</p>
  
  <p>So basically on mouseover it will give a thumbnail preview. 
  and on mouseout it will reset to the original thumbnail.</p>
  
  <p>How would you code something for this embed link: <code>&lt;iframe width="560" height="315" src="https://www.youtube.com/embed/bxQgs_kx2Mc" frameborder="0" gesture="media" allow="encrypted-media" allowfullscreen&gt;&lt;/iframe&gt;</code> or a link from another site. </p>