D-1 (Sony)

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D1 (a.k.a. 4:2:2 Component Digital)

Sony DVR-2000 VCR
Media type	Magnetic Tape, ¾-inch
Encoding	NTSC, PAL
Read mechanism	Helical scan
Write mechanism	Helical scan
Standard	Interlaced video
Developed by	BTS/Sony
Usage	Video production

D-1 or 4:2:2 Component Digital is an SMPTE digital recording video standard, introduced in 1986 through efforts by SMPTE engineering committees. It started as a Sony and Bosch – BTS product and was the first major professional digital video format. SMPTE standardized the format within ITU-R 601 (orig. CCIR-601), also known as Rec. 601, which was derived from SMPTE 125M and EBU 3246-E standards.