Thank you for this. This is the minimalist plugin I was looking for for admins that just want to KISS it. I use WordPress as my backend CMS; and, the frontend is written in a different technology to read from the WordPress database. So, I don't use any frontend stuff.
Looking at wp_postmeta, I see you store the following fields:
fv_video (the video url)
Just wondering how to populate the other two? Specifically, the _img, so I can render a "splash image" until the user clicks play.
I suppose I can edit your plugin to ask for the additional fields in the Features Video box. Just wondering if there was something I was missing.