About-network-video:
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Q: what network video Camera (IP)?
A: "the IP Protocol is the abbreviation of" Internet ", is currently used
for computer network and Internet on the most extensive A communication
Protocol. IP Camera for a digital video can be produced, and video through the
wire or wireless network for transmission of cameras, has surpassed the regional
limits, so long as has the network can be remote monitoring and video. For
system integrator or engineering contractor, if most of the equipment are
already a string, using IP camera will save a lot of installation rewiring
costs. At the same time, IP camera also let users from remote viewing field of
real-time picture, accomplish truly remote monitoring without limits.
Q: how to use network bandwidth camera?
A: besides bandwidth demand depends on the resolution and frame rate, and
the network video compression technology used by A considerable relationship.
Listed below are three in digital video surveillance product most often use
compression techniques. Please pay attention to 25 frames/s (PAL) is reached
consecutive pictures and good quality (approximate DVD) needed essential
requirements.
Q: network video cameras can store?
A: the answer is yes. Can use the software makers from distance or site,
recording monitoring network video screen, which is compared with traditional
analog camera is an advantage. Video data can also be stored in this very
convenient use signal.nas network storage equipment, and can be stored in a
video of the data.
Q: network cameras have to connect the Internet?
A: not necessarily. If not even on the network video Internet, also can be
in LAN smooth operation. If the remote user just in the same local area network,
it does not need to be connected to the Internet network video camera.
Q: why DDNS support for network camera is very important?
A: if the camera can support network DDNS Dynamic (Name), the user can use
the Server Dynamic IP and virtual Domain (such as kitchen. Taipei. Cam1. XXX.
XXX) function to set the Dynamic IP cameras, also can be in any of the Internet
to watch this video images of cameras. When in erection, ADSL broadband network
or cable modem, need not fixed IP, therefore can save the cost of fixed IP
applications. Some manufacturers can provide the products, however DDNS says
when used in remote PC needs to install special software to see remote IP
camera, so use is not easy.
Q: why is needed to support VBR or CBR at different frame number control
mode?
A: the number of frames in low mpeg-4 coding for network bandwidth is
lower, when the user via LAN and WAN network bandwidth to access the network of
the camera, support the auto/hand-switch frame number of products can be
controlled by VBR/CBR frames control method can realize LAN D1 (25) real-time
video frame, WAN D1 (12 frames) real-time preview.
Q: "Digital Time Code Embedded" is what function
Why this function is very important?
A: "the Digital Time Code Embedded" function is Embedded in the Time of
video information of data flow, MPEG rather than into two data flow to do again,
because each picture is the real Time will be stored. When the user wants to
find a specific time period or an image of record, it is quite handy. If the
network camera does not support this function, the user must search for the
video stream, it will take a considerable amount of time. Some of the camera
also provide application software to simulate the function in Time, but not so
accurate records on Digital Time, therefore, with "the Video, Embedded Code" is
also called the "Smart", but also in the Video client through some other
software to do more applications. Digital Time Code Embedded in the other
advantages including video watermark provides security. Because time is embedded
in video information, once the video tampered, time information will disappear
from video data, and unable to recover time information, so as to prevent video
can be falsified watermark, let users can easily identify the authenticity of
the video.
Q: whether the network cameras have provided dynamic detection function?
A: can you. Have network cameras can provide built-in dynamic detection
function, rather than through the software to do it. Generally speaking, if use
software to realize dynamic detection, from the incident response to the camera
at this time there will be bigger, so is a specialized monitoring safety.
Q: network camera application scope is what?
A: mainly used in professional security systems, through the network from
remote real-time monitor of the site. Network cameras can easily be integrated
in the large-scale complex system, but also can be in a relatively simple
monitor environment as an independent system to use. This product can be used to
monitor some more sensitive, need alert area, such as buildings, Banks and
stores, etc, these sites can by the central control room in the nearby to
prison, or by remote security center to monitor different sites.
Network cameras can be applied in some instead of simulation, especially
in some camera installed law enforcement of place, the tunnel, the intersection,
etc. Network cameras can also be used to manage access security, whether man or
vehicle in the past can be recorded, morphology and time to search for a trace.
These video data can be stored in the distance through a network of servers,
need not worry about the data being stolen. Network camera is very easy to
connect to the existing IP network, and can provide real-time and all through
the network video with high quality. For some sensitive areas, such as the
computer room, the bank counter or other remote places, all through the LAN or
Internet, with the most simple ways to close it. Network cameras can strengthen
the monitoring, ensure all stores and safe to provide high office safety
protection, such as the reception room, etc, when the accident occurs, can
search what person had entered computer room, make appropriate treatment.
Network cameras to manufacturers is quite a useful tool, competent in your
office or home, can monitor factory automation production equipment, and other
machines and product lines, etc. In addition, if you have PTZ Pan/Tilt ()
function of complex modulation Zoom/web machines, still can do more complicated
and changeable monitoring, like the attendants.
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