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General
Record and Playback
Networking
Requirement
Sales Services
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General
Does the AVerMedia product series support video compression?
And how much space is
needed for one day recording?
Yes. If there is no compression technology, the size of the
output file will be so huge that be no use to any purposes.
AVerMedia video capture cards support MPEG-4 and Motion-JPEG
video compression standard. The MPEG-4 technology is the
most advanced in the industry and it delivers approximately
5Kb per frame in size with 640x480 or 340x240 image
resolution, whereas Motion-JPEG delivers around 10Kb per
frame. Generally speaking, if there are little motion for a
given period of the video, the size will be much lower. So
it is hard to tell how much Hardisk size is needed for one
day recording. Normally, we do approximation, the formula
below is useful for calculating the maximum size needed for
a given period of time:
|
Size of: |
1 second |
1 minute |
1 hour |
1 day |
1 month |
| For instance, MPEG-4: |
5Kb*[frame rate] |
*[60 seconds] |
*[60 minutes] |
*[24 hours] |
*[30 days] |
However, this compression and design standard feature
high compression rate with excellent image quality to the
video surveillance industry, with support of recycle
recording, system won't stop suddenly when hardisk space is
used upz. That's why our video capture cards always stand
out from competition.
What is
Recording frame rate and displaying frame rate? And why are
there two different recording frame rate for MPEG-4 and
M-JPEG repectively?
The design of video processing unit of AVerMedia
video capture cards are divided into two parts: Recording
and Displaying, so any video processing tasks won't affect
each other for better stability and quality. Generally,
displaying frame rate is little more than recording frame
rate. When the system is performing 24-hour a day recording,
system operator can see what is going on real-time and at
the same time, recording the motion for legal evidence or
future use. The principle is assemble to traditional
VCR-based system. Our video capture cards are designed and
used for surveillance purpose. Concerning the two different
recording fps, as both MPEG-4 and M-JPEG are supported, user
can select one of them for recording. Motion-JPEG produce a
larger file size than MPEG-4, but it needs little hardware
resources because of assistance of CPU. MPEG-4 greatly
depends on recording chipset on the capture card and little
CPU resources. User should choose the appropriate recording
method for their situation.
In the
area of computer-based video capture devices, some products'
displaying frame rate and quality are not always
synchronized with output records real-time when performing
recording. Does this happen to AVerMedia video capture
cards?
Some TV capture card or other bad-quality
surveillance video capture cards may bear this disadvantage.
As processing unit of AVerMedia capture card video is
divided into displaying and recording, as a result,
displaying frame rate and quality will not be greatly
affected by recording process. For instance, MP-3008, it
bears 120/100fps displaying and 60/60fps recording
resources. However, please note that when the system is
recording static motion for a period of time, when motion is
suddenly coming, there is 1 to 2 seconds delay for the
internal video adjustment of the system.
Which type of camera does AVerMedia video capture cards
support?
Actually, it supports most analog BNC-interface Color or
B/W video cameras in the market. From professional CCTV
camera to miniature camera, we, VisionNet Technology, also
provide a series of high quality video camera product line
to our customers. Details:
video camera
Record
and Playback
What is the output format of the record? And where does
it store in the computer hardisk?
The general output format of AVerMedia capture cards is DSS. This format features a more higher compression rate
with high image quality then generic AVI or wavelet format.
And only the AVerMedia application software opens DSS file.
The main purpose is to protect the video from editing or
deleting by third parties. This function is critical for the
traceability, credibility and integrity which the court concerns. To
the Remote recording user, video are compressed into AVI.
Snapshot picture are formatted by JPEG. And user can define
their directory for storage, so records can be stored at
different partition for easy management. For easy backup
purposes, records are written on a hourly basis. One hour
one record.
Can I do
playback while still recording and monitoring through
network?
Of course Yes. AVerMedia video capture card
feature Multi-tasking, user can multi-channels playback,
backup, activate network services, browse website, or doing
other general computer works at will. This is also the
reason of success of this series.
Can I
play more than one channel record at the same time? And does
the record have time stamp printed on it?
Yes. AVerMedia video capture cards support
multi-channels playback. You can play up to 16 channels at
the same time for easy record previewing. Also you can
adjust the speed of forward and backward playback. User can
enable or disable the Time Stamp feature. We recommend user
should always enable it because of the easy traceability
proof.
Networking
Is there any method that the surveillance server can
communicate with outside when emergency occurs?
Yes. For example, you are running a retail store and just
installed our video surveillance solutions. You activated
the Motion Detection Function to record any movement
detected. At the same time, when motion is detected, alarm
can be triggered, and e-mail with image snapshot (about 10Kb
in size) will be
sent automatically to your account, and phone calls will be
sent out to your specific phone number (playing defined *wav
sound file).
* Basic Requirement: Lan/ADSL/ISDN Internet Access or
Telephone Lines
There are some video capture cards in the market that the
recording frame rate resources will decline drastically
while more and more cameras are connected. Does this happen
to AVerMedia video capture cards?
No. The amount of recording frame rate mainly depends on
the number of processing chipset on the board. Normally, one
chipset delivers 30/25 fps (NTSC/PAL). For instance, 4 Eyes
Pro, it provides 4 channels input and features 25fps
recording and displaying resources in PAL mode. When one
camera is connected, 25fps to the camera, when two are
connected, each camera would be allocated to 12.5fps. As you
can see, there are very little resources can't be used when
more and more cameras are connected. For more information,
please download our
release note
(doc).
What is Remote Manager Software? And what does it do?
In the aspect of remote clients, there are two methods:
1) Remote Manager Software; 2)WebDVR.
1) Remote Manager Software: This software is
function-based and assemble to the surveillance software in
server. It can connect to the server, record, monitor,
modify the internal settings of server, and backup the
records.
2)WebDVR: User can use Internet Browser to connect with the
server and monitor remotely. However, there is impossible
for recording, modifying or remote backup in the Internet
Browser.
Which network protocol do AVerMedia video capture cards
use?
AVerMedia video capture cards are mainly TCP/IP based, at
the same time, they also support DDNS (Dynamic Domain Name
Service). During practical use, remote client can type the
IP directly or widely used xxx.dyndns.org. In other
terms, AVerMedia video capture cards support Static and
Dynamic IP, and LAN/ADSL/ISDN.
What is
the TCP port number for AVerMedia video capture card?
Actually, user can manage the port number setting
in the applications. By default, WebDVR use port 80, Remote
Manager use port 9090.
Can I
block all network remote access?
Yes. As the application enables user to activate
network services for surveillance purpose or not. User can
disable the surveillance network services without affecting
normal Internet access of the system.
For the landline phone calls out function, which type of
modem do the computer need?
As the computer have to make sound call to other landline
phone, so it needs Voice Modem. There are mainly three kinds
of modem available in the marketplace, Data, Data/Fax,
Data/Fax/Voice Modem. Make sure the modem you buy is Voice
Modem. We also recommend some models from different brands
in our
release note (doc).
What is E-Map and WaterMark Verification?
E-Map: This function is used to preview and organize the
camera deployment and position after the installation of
your video surveillance system. The server software can load
the map of your place into the screen, and you can add the
camera information on the electronic map.
WaterMark Verification: As images in a video can be edited
by Graphics Software from other third parties. These raise
the security and integrity concerns of record. The
development of WaterMark Verification Technology is used to
distinguish the records from editing. Each recorded frame in
the video file will generate an invisible unique code, if
the image have been edited, the code will also changed.
Does there any other devices whether than video cameras
connect with AVerMedia video capture cards?
Yes. AVerMedia video capture cards can be connected with
PTZ control device, sensor I/O box, and audio input device.
PTZ I/O signal decoder may be needed for transmitting
control signal. Sensor I/O box is used to connect with
burglar alarm, smoke detector, proximity sensor, infrared
sensor or ......
Requirement
What is the Hardware Requirement of AVerMedia video
capture card?
The Hardware requirement is described in our
release note
(doc). We recommend Intel Pentium/Celeron CPU with Intel
chipset, as the tested stability performance indeed surpass
AMD platform. Until now, we tested intel 815/845 chipset,
and AMD 761 chipset. As soon as we tested more new hardware,
we will add them into the release note.
What is
the recommended software or hardware platform?
We have listed the hardware compatibility list in
our release note, but concerning the hardware
recommendations, we have the following configurations:
Intel Pentium/Celeron III 800Mhz or above
Intel chipset is highly recommended
256MB SDRAM or above
SVGA, 32MB or above video graphics memory
40GB Hardisk free space or above
Microsoft Windows 2000 Pro Service Pack 4
Sales
Services
Are
there any ways we can see the monitoring picture quality and
how more about how it works?
We devoted many resources and manpower on this
website to make it more informative and comprehensive than
other competitors. Dealing with AVerMedia video capture
cards, we have set up demonstration server that every end
users can log into, and see how our system can provide
remote access capability. When it comes to Remote Manager
Software or other further information, our sales executives
gladly arrange for you, and user menu or other reference
materials can be downloaded in our
Technology Paper page.
How to
buy your company's AVerMedia video capture card?
(For Hong Kong end users): Kindly call
+852 24271026 sales hotline, our sales executive will
arrange delivery, demonstration, and sales presentation for
you.
(International customers): E-mail your enquiry or
order quantity to the following address:
trading@visionnet.com.hk
And our sales executive in the International Sales Division
will arrange the shipment, online demonstration, net
meeting, and product enquiry affairs for you.
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