title: HTML5 Video Container Appears Black
body: <p>I am currently making a static site that makes use of a .mp4 video. I am using Middleman and hosting with Heroku (free plan). On my local server everything works wonderfully, but in the deployed Heroku version the video appears as a black box. In Safari and Firefox there is no container at all. All my other assets seem to be loading nicely. The video is 5.9 mb. Any idea what is going on here? Thank you in advance!!</p>
  
  <pre><code>&lt;video class="vid-home" src="/videos/home.mp4" autoplay loop muted&gt;&lt;/video&gt;
  </code></pre>