Betacam SX uses the Beta cassette shell and records compressed component video using MPEG2 Studio Profile at Main Level compression, a 4:2:2 variant of MPEG. The recorded data rate is kept to a very low 18 Mbps so that news material recorded in the field may be sent back to the studio at twice normal speed on a standard DS-3 data connection. Betacam SX is targeted for ENG and newsroom use.