GRASS VALLEY DMC 1000, User Manual

Page: 14 / 176

14 DMC 1000 Digital Media Camcorder User’s Guide (v4.0)
Chapter 1 - Introduction
1.2.1 Xensium™ imager
The Infinity Digital Media Camcorder uses the Grass Valley Xensium imagers which offer a
wider dynamic range and improved signal-to-noise performance when compared to other
CMOS imagers.
The imaging chips are at the heart of professional camera design, and Grass Valley has
continually worked to achieve high resolution, wide contrast handling and low noise. Coupled
with Grass Valley's broad spectrum digital signal processing it is set to deliver remarkable
pictures in uncompromised HD resolutions.
1.2.2 Advanced camcorder technology
The Infinity Digital Media Camcorder provides a choice of video formats and standards
selectable within the camcorder. You can choose from 576i50, 480i59.94, 1080i50,
1080i59.94, 720p50, 720p59.94. Additionally, video formats 1080p23.98, 1080p25,
1080p29.97 are available as a cost-option. Standard-definition (SD) formats are selectable in
either 16:9, 4:3 or letterbox aspect ratios. This makes the camcorder ideal for multi-format
acquisition and for straightforward migration from standard definition (SD) to high definition
(HD) within your workflow. The camcorder provides digital imaging for crystal-clear quality with
advanced 22-bit accurate video processing for image control.
1.2.3 IT-based recording media
The Infinity Digital Media Camcorder uses off-the-shelf REV PRO removable disks and
professional-grade CompactFlash solid-state memory as recording and playback media. The
extremely durable REV PRO removable disks provide the portability, and cost-effectiveness of
videotape with the speed, flexibility, and ease-of-use of true nonlinear media such as hard
disks.
Professional-grade CompactFlash memory is a commercially available solid-state technology
that delivers the high level of performance needed for demanding professional video
applications. These cards are small, lightweight and extremely durable. Professional-grade
CompactFlash cards currently hold up to 32 GB with sufficient throughput for both SD and HD
recording, playback and ingest.
Both REV PRO and CompactFlash media offer unprecedented advantages in terms of usability,
price and performance. They offer many additional benefits for video professionals such as
nonlinear random access to video files and non-degrading archival storage.
1.2.4 On-board selectable compression
Infinity Series products provide you a choice of compression schemes and bit rates, giving you
the option to select what is best for your workflow today and in the future. The Infinity Digital
Media Camcorder supports JPEG2000, DV and D10 and MPEG-2 (optional) compression,
assignable via the camcorder’s user interface.
The DV codec is 25 Mb/s 4:2:0 (PAL) or 4:1:1 (NTSC), making it ideal for immediate use in your
workflow today.
JPEG2000 compression can be used for both SD and HD acquisition. It provides high-
efficiency compression, 10-bit 4:2:2 encoding and no blocking artifacts —and is fully scalable.
Industry-standard MPEG-2 compression is available as an option and can be used for a variety
of HD compression profiles, including I-frame and Long GoP.