Under the “fair use” rule of copyright law, a person may make limited use of another author’s work without asking permission. Noted in the Fair Use Checklist box:
"There's no one right answer as to what constitutes a "fair use" of a particular copyrighted work. The answer varies from situation to situation."
So with this in mind please use these guidelines as a suggested starting point and be sure to fill out a checklist in order to establish correct copyright use. The following content amounts are within current copyright laws.
Using Materials Found on the Internet
Multimedia works are created by combining copyrighted elements such as movies, music, sounds, graphics, and text. It is recommended that you use only small portions of other people's works.
Movies: Up to 10% or three minutes, whichever is less
Text: Up to 10% or 1,000 words, whichever is less. (The limits on poetry are more restrictive.)
Music: Up to 10% of an individual copyrighted musical composition. 10% of a copyrighted musical composition on a sound recording. However, no more than 30 seconds may be used without gaining permission from the copyright owner and/or publisher.
Photos and Illustrations: Based on guidelines, "a photograph or illustration may be used in its entirety, but no more than five images by one artist or photographer may be incorporated into any one multimedia program. From a published collective work, not more than 10% or 15 images, whichever is less, may be used."