Sony DSR-25 Appendix, Compatibility of DVCAM and DV Format, DVCAM and DV cassettes, Compatibility of DVCAM and DV Format, Differences between DVCAM and DV format

Appendix

Compatibility of DVCAM and DV Format

Appendix

Compatibility of DVCAM and DV Format

The DVCAM format was developed as a more reliable and higher end format than the consumer DV format. Here we explain the DVCAM and DV formats: the differences, compatibility and limitations on editing.

Differences between DVCAM and DV format

Item	DVCAM	DV
Track pitch	15 ∝m	10 ∝m
Audio sampling	12 bit: 32 kHz	12 bit: 32 kHz
frequency	16 bit: 48 kHz	16 bit: 32 kHz,
		44.1 kHz, 48 kHz2)
Audio recording	Lock mode	Unlock mode
mode 1)
Time code	NTSC: SMPTE	Drop frame mode
system	time code (DF/	(NTSC) without user
	NDF, including	bits
	user bits)
	PAL: EBU time
	code (including
	user bits)

1)There are two modes for audio recording; Lock mode and Unlock mode. In Lock mode, the sampling frequencies of audio and video are synchronized. In Unlock mode, which the consumer DV format adopts, the two sampling frequencies are independent. The lock mode maintains high compatibility with the higher formats and is more effective than unlock mode in digital processing and smooth transition during audio editing.

2)This unit cannot record in DV format with 16 bit – 32 kHz or 44.1 kHz.

DVCAM and DV cassettes

Both DVCAM and DV cassettes can be used on DVCAM or DV video equipment. The recording format is defined according to recorder format as described below.

Recorder format	Cassette type	Recording format
DVCAM	DVCAM	DVCAM
(If REC MODE on	DV
the VTR SET menu
of this unit is set to
DVCAM.)
DV	DVCAM	DV
(If REC MODE on	DV
the VTR SET menu
of this unit is set to
DV SP.)

•This unit can record in DV format. (SP mode only)

•This digital videocassette recorder complies with the DVCAM format. Though DV cassettes can be used for recording, we recommend that you use DVCAM cassettes. Particularly when you use a Mini-DV cassette that is longer than 60 minutes, do not play back the tape repeatedly (i.e., when editing). Set STILL TIME to 1 MIN or 30 SEC (See page 66 (GB)).

•If you use a DV cassette to record images in the DVCAM format, the recording time will be reduced to 2/3 of the time indicated on the DV cassette.

76 (GB) Appendix