I see the video here but only in Chrome. This is one of the pitfalls that I mentioned in another post. Using the video tag has downsides because not browsers support it and it all depends on the CODEC's installed if the video will play. This is why using a video hosting service (Youtube/Vimeo) is better because they have their own wrapper for the videos which does work in all browsers.
<div class="html-element"><div class="homepage-hero-module">
<video autoplay loop class="fillWidth">
<source src="http://brettburgess.tk/video/Undo.mp4" type="video/mp4" />Your browser does not support the video tag. I suggest you upgrade your browser.
<source src="http://brettburgess.tk/video/Undo.webm" type="video/webm" />Your browser does not support the video tag. I suggest you upgrade your browser.
<div class="poster hidden">
<img src="./images/Undo.jpg" alt="Picture of a hand typing at a computer screen">