17 U.S.C. § 107 Notwithstanding the provisions of sections 17 U.S.C. § 106 and 17 U.S.C. § 106A, the fair use of a copyrighted work, including such use by reproduction in copies or phonograph records or by any other means specified by that section, for purposes such as criticism, comment, news reporting, teaching (including multiple copies for classroom use), scholarship, or research, is not an infringement of copyright. In determining whether the use made of a work in any particular case is a fair use the factors to be considered shall include: A: the purpose and character of the use, including whether such use is of a commercial nature or is for nonprofit educational purposes: B: the nature of the copyrighted work; C: the amount and substantiation of the portion used in relation to the copyrighted work as a whole; and D: the effect of the use upon the potential market for or value of the copyrighted work. The fact that a work is unpublished shall not itself bar a finding of fair use if such finding is made upon consideration of all the above factors. ... https://www.youtube.com/watch?v=iWide75CZgQ

All materials presented in my videos are for nonprofit, educational purposes ONLY and therefore are usable under the (Fair Use Copyright Act Of 1967) United States Law: Sections 17 U.S.C. § 106 and 17 U.S.C. § 106A 17 U.S.C. § 107 Notwithstanding the provisions of sections 17 U.S.C. § 106 and 17 U.S.C. § 106A, the fair use of a copyrighted work, including such use by reproduction in copies or phonograph records or by any other means specified by that section, for purposes such as criticism, comment, news reporting, teaching (including multiple copies for classroom use), scholarship, or research, is not an infringement of copyright. In determining whether the use made of a work in any particular case is a fair use the factors to be considered shall include: A: the purpose and character of the use, including whether such use is of a commercial nature or is for nonprofit educational purposes: B: the nature of the copyrighted work; C: the amount and substantiation of the portion used in relation to the copyrighted work as a whole; and D: the effect of the use upon the potential market for or value of the copyrighted work. The fact that a work is unpublished shall not itself bar a finding of fair use if such finding is made upon consideration of all the above factors. ... https://www.youtube.com/watch?v=zx7nbDsas1I