Royalty Free Videos?
Browse the Creative Commons repository on Vimeo for a start. Except for the two non-commercial categories, videos from the other categories can be used for a credit, at most.


  Here’s where you can browse all the videos on Vimeo that have a Creative Commons license applied to them. Creative Commons licenses enable members to grant copyright permissions on their videos so others can copy, distribute, edit, remix, and build upon them while giving credit to the original video’s creator.