(Taken from Creative Commons http://creativecommons.org, based on selection for licensing video work for non-commercial purposes):
You are free:
Under the following conditions:
Attribution. You must give the original author credit.
Non-commercial. You may not use this work for commercial purposes.
Share Alike. If you alter, transform, or build upon this work, you may distribute the resulting work only under a license identical to this one.
Your fair use and other rights are in no way affected by the above.
(Actual document also includes link to LEGAL CODE - THE FULL LICENSE)