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network image quality explained... |
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Bosch
hardware using MPEG-4 CIF delivers S-VHS video quality images.
6 times the frame rate of MJPEG for the same amount of bandwidth.
MPEG rather than JPEG
Bosch VCS uses best of breed compression rates and MPEG motion
video compression rather than still images (JPEG). . |
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See...
Bosch classic hardware
Provides
MPEG-4 CIF with audio - 25 images sec, 512Kbps to 1Mbps
S-VHS quality video with audio and telemetry. Intercom audio
built in so you can talk to the person you are looking at.
Single box solution to see video from hard to cable locations.
VIP
10 single-channel MPEG-4 CIF encoder or decoder
VideoJet
10 single-channel MPEG-4 CIF video encoder or decoder
VideoJet
10-I single-channel MPEG-4 CIF video encoder or decoder with
ISDN |
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The
new x-range of VCS hardware uses advanced technology to provide
MPEG-4 4CIF
that it is capable of 4 x CIF 25 frames per second. This DVD
like quality is equivalent to MPEG-2 but at around half the
bandwidth, eg. live video (which is virtually indistinguishable
from the best analogue video) would require 5 Mbits/sec in MPEG-2
but only 2.5 Mbits/sec in MPEG-4 4CIF.
Using x-range products now gives users the ultimate in flexibility
and choice, either MPEG-4 CIF (S-VHS quality) or MPEG-4 4CIF
(DVD quality) to match their application. The dual streaming
function provided with all x-range products allows users to
have equivalent MPEG-2 DVD like quality on both their CCTV monitors
and Internet stream, with minimum use of bandwidth. |
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See...
Bosch x-range hardware
MPEG-4
4CIF dual stream per channel provides DVD quality (MPEG2 equivalent)
- 4 CIF, 25 frames per second - no audio
The x-range are all MPEG-4 dual stream per channel and are capable
of 4CIF (4 x CIF 25 frames per second) which means they can
be used instead of MPEG-2, giving similar high quality results
but at around half the bandwidth of MPEG-2. Providing users
with maximum flexibility and choice of picture quality and bandwidth
usage. Audio available soon.
VIP
X1 single channel MPEG-4
4CIF video encoder
VIP
X2 dual-channel MPEG-4 4CIF
video encoder
VIP
XD single/quad stream MPEG-4 4CIF
decoder
VideoJet
8008 eight channel MPEG-4 4CIF
encoder |
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Bosch
hardware using MPEG-2 delivers the highest quality pictures.
MPEG-2 is described as DVD quality and is equivalent to analogue
CCTV pictures. At 50 frames per second with no de-interlace
'zippering' footage is smoother.
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See...
Bosch professional hardware
MPEG-2
provides DVD quality + audio - 50 images sec (interlaced), 2Mbps
to 5Mbps
Professional build. Built in mains power supply. DVD quality
video, stereo audio and S-VHS quality with intercom audio. Record
and view at different qualities, view local and remote at different
sites.
VIP
1000 MPEG-2 single-channel video encoder or decoder
VideoJet
8000 8 channel MPEG-2 encoder
VideoJet
XPro modular digital CCTV matrix |
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| The
following diagram provides a detailed overview of all the image
resolution standards relating to IP network video solutions.
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view
large image
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Constrained
connections – GSM, ISDN, ADSL |
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Medium
resolution MPEG4, scalable frame rate |
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CIF
at a few seconds per frame over GSM 9.6Kbps |
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CIF
at 7-10fps over ISDN 100Kbps |
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CIF
at 15-25fps over ADSL 200Kbps |
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Typical
LAN |
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Medium
to full resolution, full-frame rate |
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CIF
at 25ips MPEG4 at 700Kbps average |
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2CIF
at 25ips MPEG4 at 1250Kbps average |
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4CIF
at 25ips MPEG4 at 2.5Mbps average |
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Ultimate
quality |
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DVD
quality |
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4CIF
at 25ips MPEG4 at 2.5Mbps average |
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MPEG2
at 3.5Mbps to 5Mbps average |
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| For
more information on how to order Bosch IP network video click
here >> |
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