The fair use doctrine in U.S. copyright law allows for limited use of copyrighted material without the copyright owner's permission in certain circumstances, such as for the purposes of criticism, commentary, news reporting, teaching, scholarship, or research. However, determining whether a particular use of a video is a fair use requires a detailed analysis of factors such as the nature of the use, the amount and substantiality of the portion used, and the effect of the use on the potential market for the copyrighted work. In general, using a full video for educational purposes without permission would likely not be considered a fair use, and could still be considered copyright infringement.
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