YouTube video quality manager 1.2
by Amy Martin
This add-on is used to set your YouTube video quality global preference.
E.g.: If you want all your videos on YouTube to play on 480p just set it in the addon and you're on.
Supports all video qualities.
This add-on has been preliminarily reviewed by Mozilla. Learn more
This add-on is not compatible with your version of Firefox because of the following: