HTML5 Video - Fallback Linked Image

I'm looking to display a linked image to show when my video isn't compatible.

My code is as follows:

<video controls poster="/sites/default/files/image/CRM-Systems-Video.png">
  <source src="/sites/default/files/image/CRM-Systems-Video.ogv" type="video/ogg">
  <source src="/sites/default/files/image/CRM-Systems-Video.mp4" type="video/mp4">
<a href="http://ift.tt/1OmV9zo">  
  <img src="http://ift.tt/1ERn89C" title="CRM System image">
  </a>
</video>

However when I use Browser Stack to test IE8 (non compatible with <video>) no image is shown? Is this due to the link?