Update - October 2025
After I don't know how long, we're back up and running!!!! YT completely fubar'd this addon. As of today, it works again.

If you like watching YouTube videos but prefer more control over how they are played, install this add-on in Firefox! You can download the videos as mp4's in up to 720p resolution with the standard version and then play them using a player of your choice. For a small, one time fee, you can download the videos at 1080p. I've tried several different add-ons and this one has provided the most consistent performance.

I did recently have a problem where the add-on quit working and after a couple of quick emails with the author, I was back up and running. A big thanks to Dishita for all the help!