It's 2013, and stock WordPress still does not support self-hosted video blogs. This plugin fills the gap.
All of the other video.js plugins require you to write out a long shortcode, manually copying and pasting in links to your videos in several formats, and any other options you want--I don't have time for that. This plugins does away with all that, and gives you a simple button to use.
I would like to see this merged with WP Video Posts, so that you could upload a video in a single format, have it automatically converted via ffmpeg with a thumbnail, and then have it served with video.js.
Also, it could use a responsive video size option that some of the other video.js plugins have. Additionally, you will have to install a MIME-type plugin to get WordPress to recognize webm video.