Digital Betacam (commonly referred to as DigiBeta, D-Beta, DBC or simply Digi) was launched in 1993. It supersedes both Betacam and Betacam SP, while costing significantly less than the D1 format. S tapes are available with up to 40 minutes running time, and L tapes with up to 124 minutes. The Digital Betacam format records a 3 to 1 DCT-compressed digital component video signal at 10-bit YUV 4:2:2 sampling in NTSC (720486) or PAL (720576) resolutions at a bitrate of 90 Mbit/s plus four channels of uncompressed 48 kHz / 20 bit PCM-encoded digital audio. It is a popular digital video cassette format for broadcast television use.