1. The initial SMPTE definition for anamorphic projection with an optical sound track down the side (PH22.106-1957), issued in December 1957, standardized the projector aperture at 0.839 × 0.715 inches (21.3 × 18.2 mm) (aspect ratio 1.17:1).

2. The Betso SBOX-1 is a compact, self powered solution for reading/generating/jamming of SMPTE time code of all common frame rates 23.976 – 30 drop frame and non drop frame formats including their double speed and half speed variants: Standard TC formats: 23.976, 24, 25, 29.97, 29.97DF, 30, 30DF