So you really want to know how ip cameras work?
Internet Protocol (IP) cameras are a type of digital video cameras used mostly for surveillance.
Which unlike regular CCTV (analog) cameras, are able to send and receive data through the internet or a computer network.
Webcams are sometimes described as IP cameras but they operate when plugged into a computer running specific software.
The term “IP camera” is most commonly applied to those used specifically for surveillance.
IP cameras come in two different types:
· Centralized cameras – these require a network video recorder for recording and video management.
· De-centralized cameras – they do not require a network video recorder and are able to record directly to a standard storage media such as PC/server, SD card, or network-attached storage.
The major difference between IP cameras and previous generation analog cameras is the form in which the video signals are transmitted.
Analogue cameras transmit video signals as a voltage, while IP cameras send images using the TCP/IP protocol, thus allowing a number of added features.
- Audio communication via two-way single network cable that allows the user to communicate with the subject of the video (for instance, security clerk addressing a visitor outside on the frontage.
- Wi-Fi-enabled network.
- Remote accessibility – this allows users to view a live feed from a computer, smartphone, or other device.
- PoE (Power over Ethernet) – this is what allows power to be supplied to the camera without a dedicated power supply.
- Transmission of commands in a single network (this is used on PTZ cameras).
- Video analytics can be activated on the camera itself to enable it to analyze images.
How IP Cameras Work?
An IP camera connects to a network using a local area network (LAN) at home, the wide area network (WAN) at the office, or directly to the internet at large.
Users can select from wired or wireless connection for flexibility and convenience.
In order to transmit video, the camera connects to software installed on your computer using a wireless network and if the computer is connected to the internet, you can view the feed live on your phone from a remote location.
In order to access the camera remotely, you may have to configure your home router to forward at least one port to the camera – thus rerouting incoming connections to it.
If your camera uses a DDNS service you don’t have to remember the IP of your home router.
Modern IP cameras also support internal recording to a standard SD or micro-SD card, therefore eliminating the need for a NVR.
High video resolution means better video clarity but at the cost of increased bandwidth. Good video clarity is achieved using a codec, which is a device used to compress data before transmission so as to minimize bandwidth.
Technical working requirements
High speed internet is essential for video surveillance.
Video data uses considerable bandwidth so users need reliable internet connection particularly when using night vision IP cameras or other recording device.
A wired or wireless router must be configured for port forwarding in order for it to transfer data out of the network and the camera should be set for static’ IP.
Advanced IP cameras come in different features including waterproof and motion-sensitive triggers.
When purchasing an IP or network camera, focus on the technical aspects as well as the application, network, and connectivity.
Remember to read the item description for a comprehensive list of features and specifications.
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