Code:
<link href="//vjs.zencdn.net/4.1/video-js.css" rel="stylesheet">
<script src="//vjs.zencdn.net/4.1/video.js"></script>
<video id="example_video_1" class="video-js vjs-default-skin"
controls preload="auto" width="640" height="360"
poster="http://video-js.zencoder.com/oceans-clip.png"
data-setup='{"example_option":true}'>
<source src="{video_file}" type='video/mp4' />
</video>
Try starting with something like that. Video.js is way easier than it seems.