YouTube (www.youtube.com) is a Web site allowing you to "Broadcast Yourself". Anyone can make a movie and then post it for the world to see - for free. Millions of movies are posted, on topics as wide as you can imagine. What some users may not realize is that their homemade movie could be infringing on the copyright of someone else.
Before posting, users should ask themselves "Do I have permission to post this content?" A movie may seem harmless enough, but could still have copyright implications. For example, a high school student posting a video of himself playing a popular song on his guitar. Permission is needed to use the music. Music in the background of a video is also a concern. Permission must be granted to use copyrighted work. An exception to this falls under the guidelines of fair use. The fair use guideline for music clips is "if a student is using the music clip in a multimedia project directly related to current curriculum, 10% of the song or 30 seconds from a single work is allowable use."
Complicated, isn't it?
Source: Miller, K. M. (2008). Copyright in a social world. MultiMedia & Internet@Schools, (15)3, 14-16.