EFFECTIVE DATE.

SEC. 13. EFFECTIVE DATE.The provisions of this Act shall be effective for three years beginning on the date of enactment of this Act. The provisions of this Act shall not apply to any copy of a film materially altered prior to such effective date if such copy of such film is owned by an individual for his personal use, in the inventoiy of the manufacturer or packager of a videocassette or already distributed to retail or wholesale distributors of videocassettes.