title: How to include video tag / mp4 videos in a Jekyll blog
body: <p>I am <em>not</em> looking for a way to <a href="https://stackoverflow.com/questions/10529859/how-to-include-video-in-jekyll-markdown-blog/12273878#12273878">link to Youtube</a>. I want to refer to a <em>self-hosted mp4 file.</em></p>
  
  <p>I already have <code>{% audio my-file.mp3 %}</code> working.</p>
  
  <p>I am looking for an equivalent <code>{% video my-file.mp4 %}</code>.</p>
  
  <p>If I use <code>&lt;video ... /&gt;</code> directly, I get an error "Liquid exception: Unknown tag 'video' in my-text.md".</p>
  
  <hr>
  
  <p><strong>Edit</strong>: I think there is an existing <a href="http://octopress.org/docs/plugins/video-tag/" rel="noreferrer">Octopress plugin</a>. But how do I install this / make it known to Jekyll?</p>