Hm... The Tahoe Least-Authority Filesystem might be useful for this. The costs of storing
and serving the video files could be spread among contributors who offer to run a server.
As a demo of this, anyone who wants to share a video which is about Free Software and which is
encoded in a freedom-compatible format is welcome to upload it to the Tahoe project's "test
grid" (servers contributed by allmydata.com):
http://allmydata.org/trac/tahoe/wiki/TestGrid
Here is an example video, in Ogg Theora format:
http://tahoebs1.allmydata.com:8123/uri/URI%3ACHK%3A3b6xl6...