Sony DSR-20/20P - Manuel (Page 45)

Appendix
Appendix
45 EN
DVCAM format is developed as a more reliable and higher end format than consumer DV format. Here are
explained about DVCAM and DV formats: the differences, compatibility, and limitations on editing.
Differences between DVCAM and DV format
Item DVCAM DV
Track pitch 15
µ
m 10
µ
m
Audio sampling frequency 12bit: 32kHz 12bit: 32kHz
16bit: 48kHz 16bit: 32kHz, 44.1kHz, 48kHz
Audio recording mode 1) Lock mode Unlock mode
Time mode Drop frame system (DSR-20 only) or Drop frame system only
Non-drop frame system
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
Both DVCAM and DV cassettes can be used on DVCAM or DV video equipment. The recording format of picture
is defined according to recorder’s format as described below.
Recorder’s format Cassette’s format Recording format
DVCAM DVCAM DVCAM
DV
DV DVCAM DV
DV
• This digital videocassette recorder 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 DV video equipment Can be played back
may be able to play back
a DVCAM-formatted tape.
Appendix
Compatibility of DVCAM and DV Format