Fair use of copyright

[spaceman]

I don't know if this link as been posted yet but here goes

http://www.utsystem.edu/ogc/intellectualproperty/copypol2.htm

it doesn't directly apply to V.J.s but still is quite enlighting

[WordVirus23]

4.2.1 Motion Media

Up to 10% or 3 minutes, whichever is less, in the aggregate of a copyrighted motion media work may be reproduced or otherwise incorporated as part of a multimedia project created under Section 2 of these guidelines