Vimeo permits upload of videos licensed with Creative Commons.

"A collection of stock footage clips submitted by Internet Archive users. These clips are designed to be used in other videos."

"Rick Prelinger and The Internet Archive hereby offer public domain films from Prelinger Archives to all for free downloading and reuse."

"This library contains digital movies uploaded by Archive users which range from classic full-length films, to daily alternative news broadcasts, to cartoons and concerts. Many of these videos are available for free download."

"Feature films, shorts, silent films and trailers are available for viewing and downloading."

Video in Critical Commons may well be copyrighted but the site encourages users to post and reuse content in keeping with fair use.