What is the difference of the network cameras and network video server?

What is the difference of the network cameras and network video server?
1. Network Camera
The network camera is a combination of traditional cameras and network video technology a new generation of products, In addition to the traditional camera image capture function, the machine also built-in digital compression controller and WEB-based operating system, making the video data after compression , sent to the end-user via LAN, Internet or wireless network. Remote users standard IE browser or client software on their PC network camera comes with a separate IP address of the network camera access, real-time monitoring of the situation of the target site, and real-time editing of image data and storage, and also through the network to control the PTZ IP camera and lens, all-round monitoring.
From the external structure, network cameras into HD IP Camera, dome network camera, gun-type network camera, the P2P network cameras, outdoor waterproof network camera, PNP IP Camera, infrared night vision network camera, plug-and-play IP camera and other general category. From the internal composition In either model, the basic structure of the network camera mostly by the lens, IR filter, image sensor, digital image processor, compression chip and a server with a network connection .
As with ordinary cameras operating performance network camera, for example, with automatic white balance, electronic shutter, auto iris, automatic gain control, automatic backlight compensation function. On the other hand, the IP Camera with network functions, so they can support multiple users to connect at the same time, some IP Camera also has a dual-channel, analog output and network digital output both at the same time.
2. Network video server (video encoder)
In some ways, the video server can be seen as a IP Camera without the lens, or without the hard drive of the DVR (the ability of some network video server also supports hard disk), its structure substantially similar to the network camera , by one or more analog video input, digital image processor, compression chip and a server with a network connection. Video server input analog video signal digital processing, the mode of a digital signal is sent to the network in order to achieve the purpose of remote real-time monitoring. As the video server will successfully analog cameras "into the best way to network cameras, so it is also a network monitoring system with the current analog CCTV system integration.
Video server can achieve the same functionality as the network camera, in the configuration of the device even more flexible. Network cameras are usually limited by itself lens and body function, and use video server can be connected to the analog cameras and any general category; video server 1, 2 and 4 video inputs-based, customer demand for the number of road to ones according to the needs of the system, the user can select the video input match the number of video server to be appropriate to reduce the overall system cost.
From:http://www.vstarcam.com/channel/What-is-the-difference-of-the-network-cameras-and-network-video-server--88.html