Motivational Videos for Corporate Meetings

I was asked by a client if they could "download a movie" from YouTube.com® and then show it at a large organization event? I have two simple answers:

1. Copyrights/Ownership
2. Resolution

1) Copyrights are assigned to a work when it is complete. You don't necessarily need to see the little copyright symbol © for something to be copyrighted. All footage on YouTube® is owned by the people who made the video -- i.e. the videographer or producer-- and it is automatically copyrighted.