Elder [Bruce C.] Hafen recounted how, in 1953, a young staff member in the Missionary Department named Gordon B. Hinckley was called into the office of President [David O.] McKay and given the difficult assignment of devising a way to present the temple ordinances in eight languages. After weeks of studying the temple ordinances, pleading with the Lord and counseling with President McKay in the Salt Lake Temple, Brother Hinckley proposed presenting the endowment ordinances in movie form. When the First Presidency and Quorum of the Twelve approved the idea, the fifth floor of the Salt Lake Temple was organized into a sacred movie set where filming took place.
[Anderson, Devery; The Development of LDS Temple Worship, 1846-2000: A Documentary History, http://amzn.to/TempleWorship]