DV was the first digital recording format to reach the consumer market. Originally called DVC (digital video cassette) and now often referred to as MiniDV, this highly standardized quarter-inch cassette format records 4:1:1 525-line digital component video (or 4:2:0 625-line) using 5:1 compression. The compression forms the basis of not only DVCAM and DVCPRO but also the half-inch D-9 format. It can be said that DV/MiniDV is the poster child for small-format digital recorders.