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DVCAM Recording Format
For the Next Generation
The DSR-1P provides superb picture quality, multi-
generation capability and production flexibility from its use
of the new DVCAM digital recording format - specifically
developed by Sony for professionals in the digital era.
Playback Compatibility with the
Consumer “DV” Format
The DVCAM format has been developed as an extended
digital recording format for video professionals and is
based on the DV format. However, it maintains playback
compatibility with the consumer DV recording format and
has the unprecedented advantage that both standard and
mini cassettes can be used in the same machine. By using
an increased track pitch, the DVCAM format gives higher
reliability for professional editing.
The DVCAM Component Digital
Recording Format
The DVCAM format uses 8-bit component recording with
a 5:1 compression ratio and sampling at the rate of 4:2:0 to
provide superior picture quality and multi-generation
capability.
The DVCAM employs an intra frame compression scheme
which is ideal for editing applications. Based on DCT
(Discrete Cosine Transform) techniques, each frame
consists of 12 tracks. Each track has ITI (Insert and Track
Features
Information), Audio, Video, and sub code areas. The ITI,
which is a reference signal for a precise tracking, and time
codes on the Sub Code area assure highly accurate
editing performance.
This technique provides much greater operational flexibility,
for example by minimizing dubbing limitations to allow
more efficient and complex multi-layering.
High Quality Digital Audio and
Audio Mode Selection
The DSR-1P provides two selectable audio channel
modes, 48kHz mode and 32kHz mode.
In order to ensure superb audio performance with a wide
dynamic range and an excellent signal-to-noise ratio, PCM
(Pulse Code Modulation) digital stereo recording is used for
both modes; 16-bit quantization and a 48kHz sampling
frequency in the two-channel mode, 12-bit and 32kHz
sampling in the four channel mode (only CH-1/CH-2).
Excellent Performance from Professional
DVCAM Tapes
To gain the maximum performance from high density
digital recording, new Advanced Metal Evaporated
cassette tapes are used for DVCAM. These give superior
quality to DVCAM recording by achieving an RF video
output which is +4.5dB higher compared to that of Hi-8
metal evaporated tape. Higher durability is also ensured
for professional editing applications by enhancing
protection with a DLC (Diamond Like Carbon) coating.
Each cassette has a built-in 16kbit IC memory which stores
data to enhance editing efficiency. DVCAM cassettes are
available in two sizes; the DVCAM Standard cassette
provides a maximum recording time of 184 minutes and a
DVCAM Mini cassette up to 40 minutes.
Tape Direction
Sub Code
ITI: Insert and Track Information
Head Direction
Video
Audio
6.35mm
(1/4 inch)
ITI
<Cassette memory>