Sony DSR-250 Camcorder User Manual


 
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Additional Information
Compatibility of DVCAM and DV formats
DVCAM format is developed as a more reliable and higher end format than consumer
DV format. Here explained are the differences, compatibility, and limitations on editing
about DVCAM and DV formats.
Differences between DVCAM and DV formats
Item DVCAM DV
Track pitch 15 µm 10 µm
Audio sampling 12 bit: 32 kHz 12 bit: 32 kHz
frequency 16 bit: 48 kHz 16 bit: 32 kHz, 44.1 kHz, 48 kHz
Audio recording mode
1)
Lock mode Unlock mode
Time code Drop frame system or Drop frame system only
Non-drop frame system
(SMPTE time code)
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
consumer DV format adopts, the two sampling frequencies are independent.
Therefore, lock mode is more effective than unlock mode in digital processing and
smooth transition during audio editing.
DVCAM and DV cassettes
The recording format of picture is defined according to recorders format as described
below.
Recorders format Cassettes format Recording format
DVCAM DVCAM DVCAM
DV DVCAM
DV DVCAM DV
DV DV
This digital camcorder complies with DVCAM format. Though DV cassettes can be
used for recording, we recommend you to use DVCAM cassettes to get the most out of
high reliability of DVCAM format. The recording time of DV cassettes is 2/3 shorter
than that indicated on the DV cassettes.
Compatibility on playback
Some tapes cannot be played back on DVCAM or DV video equipment.
Tape On DV video equipment On DVCAM video equipment
DV-formatted Can be played back Can be played back
(only when recorded in
SP mode)
DVCAM-formatted Some equipment may be Can be played back
able to play back