A camera whose image is digitized, processed and encoded from within the device, and then transmits the digital image over an Ethernet connection to a computer or a storage device ( NVR, EVS, …).
IP camera can use both CMOS or CCD sensors, there are many similar models to traditional cameras such as: PTZ(Pan/ Tilt) / Zoom), dome, cylinder body, ceiling panel, …
IP cameras often have a built-in web interface that can be accessed and controlled based on a defined IP address via a specified IP address. over WAN, LAN.
By using web browser or camera viewing software (VMS), customers or users can view IP camera images from anywhere.
II. What is HD-Analog camera?
A camera with a CCD sensor and then transmitted to an Analogue recording device such as a monitor or storage device (DVR, XVR).
No Like IP cameras, Analog cameras do not have a built-in web interface for access and control, but this function is performed by video recorders (DVR, XVR), or control equipment (Control equipment).
III. Should I choose IP Camera or HD-Analog?
1. Image quality ?
– For IP Cameras:
IP cameras capture images with high definition and Megapixel quality (more than 15MP). The resulting image is free of noise and ripple.
High Frames per second (FPS) rate (more than 60fps) helps to keep up with fast movements.
IP Camera limited by the network bandwidth in the system. Users must calculate the bandwidth of the transmission line and frame rate, the image quality is suitable for the network system in use.
Because the image is compressed before being transmitted to the center, there will be high resolution. delay (about 2 – 3 seconds), and the image is not guaranteed to be real-time.
It is easy to get time difference when combined with the DVR (to overcome it, it is necessary to synchronize the time between the Cameras. and the recorder are the same)
– For HD-Analog Camera:
HD-Analog camera captures images with maximum definition and quality of 12 MP. The resulting image may be subject to noise, power surge ripples, and transmission distances far from or near 3-phase power.
Low Frame Rate per second (FPS), often 25fps (PAL) and 30fps (NTSC) are common.
Unlimited by network bandwidth, images are transmitted in real time, with low latency (< 1 second).
2. Security ?
– For IP Cameras:
IP data can be encrypted and can be difficult to know if stolen. However, the network itself is subject to viruses and other software attacks.
As a result, cameras and network devices are also targets for hackers.
– For HD-Analog Camera:
Analog signal is less secure and can be stolen or viewed by anyone with access to the cabling infrastructure.
However, because of the entire system Analog systems are almost immune to viruses and other types of attack software, so if they want to hack the camera, hackers have no choice but to be forced to make physical contact with the devices in the system.
3. Installation and maintenance operations ?
– For IP Cameras:
IP cameras require some basic networking skills for small-scale installation.
But in large-scale installations such as enterprises, factories, and workshops, installation is difficult. installing IP cameras requires the installer to have technical skills and expertise.
If the system is stable, there are few errors, but it is easy to DDOS or duplicate IP. Therefore, for large systems, it is recommended to set up a separate VLAN for the Camera.
– For HD-Analog Camera:
Analog camera requires no network and configuration knowledge, just power supply, set point and focus point, camera installation can be done easily without regard to scale of the system.
Easily susceptible to noise and ripples when installed in the environment of factories, factories near 3-phase power, interference due to voltage drop, long transmission distance. In addition, it is easy to image noise due to long-term use of BNC, Balun.
4. Compatibility ?
– For IP Cameras:
IP cameras need an NVR (IP Video Recorder) to communicate with each specific camera.
Every time you want to install a new camera, you need to make sure that the NVR has support for that camera.
Because an NVR may only support a limited number of cameras from a particular manufacturer.
– For HD-Analog Camera:
A DVR can accept any analog camera. You won’t have to worry about any compatibility issues when you need to change your DVR or camera.
However, one caveat is that many DVRs these days are designed to be able to connect. Suitable for both Analog Camera and IP Camera.
5. Scalability ?
– For IP Cameras:
One of the advantages of IP is that if you want to add a new IP Camera, just plug it into any network connection.
However, when you want to expand the system. Large-scale cameras for businesses require specialized management equipment and the necessary bandwidth.
– For HD-Analog Camera:
Analog cameras do not require bandwidth when data is transferred between the camera and the storage device. So when a new camera is installed – plugged directly into the DVR – there will be no impact on your network.
6. Price ?
– For IP Cameras:
IP cameras can be more than twice as expensive as Analog Cameras.
Installing an IP camera system can become very expensive because it requires Switches and peripheral devices.
– For HD-Analog Camera:
Analog cameras cost much less than IP cameras.
As no peripherals and associated management are required, installing an Analog Camera offers significant savings. tell the cost to the business.
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