Sony HVR-A1U manual HDV Format, HDV 1080i Specification1, Long Recording Time

HDV FORMAT

HDV 1080i Specification1

The HDV 1080i specification of the HDV format features 1,080 effective scanning lines (interlace scanning system) and 1,440 horizontal pixels. It adopts the MPEG-2 compression format (MP@H-14 for video), which uses 8-bit digital component recording with a sampling rate of 4:2:0. MPEG-1 Audio Layer II is used as the audio compression format, allowing for two-channel recording with a sampling frequency of 48 kHz/16-bit. The HDV 1080i specification provides high picture quality that can be used for HDTV program production.

1 The HDV format also defines the HDV 720p specification, which features 720

effective scanning lines (progressive scanning system) and 1,280 horizontal

pixels.

Track Pattern of the HDV 1080i Specification

Direction of tape travel	10 μm
	Sub Code sector
	MPEG-2 PES sector
Direction	(Video + Audio + Search + AUX)
	1/4 inch
of head motion	(6.35 mm)

ITI sector

ITI: Insert and Track Information

PES: Packetized Elementary Stream

Compatible with Existing and

New DV Videocassette Tape

As a member of the proven DV family of formats, the HDV format has, from the outset, been developed for compatibility with all grades of DV videocassette tape. This allows operators to use high-grade DV videocassette tapes for applications where high robustness is critical, or consumer- grade videocassette tapes for more economical operations. For heavy-duty applications, a new high-grade mini cassette tape has been developed; the DigitalMasterTM PHDVM-63DM. This tape is compatible with the HDV, DVCAM, and DV formats.

Long Recording Time

The HDV format adopts the same track pitch and tape speed as the DV format, thus offering the same recording time

–a maximum of 63 minutes when recording on a DigitalMaster mini cassette tape.

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