1. Society of Motion Picture and Television Engineers. A professional organization that sets standards for American television. 595 W. Hartsdale Ave., White Plains, NY, 10607-1824. Tel: 914-761-1100. Fax: 914-761-3115. Email: smpte@smpte.org Internet: www.smpte.org . 2. An informal name for a color difference video format that uses a variation of the Y, R-Y, and B-Y signal set.