Moxa Technologies VPORT P06-1MP-M12 Uživatelský manuál stáhnout pdf (Strana 8)

18-8

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IP Surveillance

IP Surveillance >

Introduction to Rugged IP Video Surveillance

DynaStream™ for System and Network Efﬁciency

CBR Pro™ for Excellent Image Quality with Limited Bandwidth

Minimize Network Bandwidth with Distributed Video Recording

Video streaming is always an issue for IP surveillance systems due

to the fact that it is related to video and network performance. For

versatile video streaming requirements, Moxa’s IP video solution

With hundreds of cameras in an integrated system with IP surveillance

and other systems (such as SCADA), it is important to control the

size of a video stream so that it does not flood over to the common

shared network and consume too many system resources, which

could disrupt critical system operation or data transmission. Moxa

has developed a revolutionary DynaStream™ function, which can

control the video frame rate, and has introduced it into all VPort

series products automatically. Once an event is detected, such as

a DI alarm, network traffic jam, etc., the system can automatically

reduce all VPort’s video frame rates so that they will consume fewer

resources and less bandwidth, or increase all VPort’s video frame rates

to increase video performance. This is done with CGI commands,

SNMP, or Modbus/TCP. This new tool is extremely flexible. Not only

Due to network bandwidth limitations, it is a challenge to guarantee

both the image quality and video streaming reliability of a video

surveillance system, especially for onboard CCTV applications.

Constant bit rate control is commonly used to enhance video-

streaming stability by controlling the transmission bit rate when

Moxa provides a distributed network video recording (NVR) solution

to decentralize video storage and reduce network bandwidth demands.

Instead of transmitting all recorded videos to the control center,

the system uses scalable NVR products at field sites for video

data storage. With this distributed approach network resources

features flexible and systematic methods for optimizing video

streaming.

30FPS

1FPS

5FPS

Active Mode: Event Trigger

› Digital Input

› Motion Detection

› Network Redundant Event

› Video Loss

Passive Mode:

› CGI Command

› Modbus/TCP

(Write/Read)

› SNMP

Live view from remote monitoring

or SCADA video monitoring

Control Command

ON/OFF

can it change system resources and network bandwidth so that critical

data systems can maintain Quality of Service (QoS), in addition it can

guarantee that system performance will not be impacted by video

streams.

are conserved, since only video data that is actually needed will be

transmitted over the network. NVR, SCADA, and Center Management

System (CMS) engineers can all benefit by being able to view live

video feeds or playback recorded video, while leaving more bandwidth

available and improving surveillance efficiency.

Flexible and Systematic Video Streaming Optimization

CBR only CBR Pro™

network bandwidth is limited. However, packet loss can still occur

with typical CBR, resulting in splotchy images appearing in your video

footage.

• Eliminate image packet loss

• Increase network efﬁciency

• Available with all Moxa IP cameras

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