A digital tape format that uses 1.25" high-density metal particle tape, running at 57.8 mm/s, to record a video data rate of 50 Mb/s.

Video sampled at 4:2:2 is compressed at 3:3:1 using DCT-based intraframe compression. Two individually editable audio channels are recorded using 16-bit, 48 kHz sampling. The tape can be shuttled and searched up to x32 speed. Digital S includes two cue tracks and four further audio channels in a cassette housing with the same dimensions as VHS.