What is an IPC network camera? What is the difference from analog cameras
From imaging, transmission, power supply, cabling to back-end storage, the system compares the differences between IPC network cameras and analog cameras to help you make the right choice in a new construction or renovation project.
Basic concepts
IPC (IP Camera) is a network camera. The image is collected, encoded and compressed inside the camera, and is output as a digital signal through the network; the analog camera outputs an unencoded analog video signal (CVBS), which requires a back-end DVR for encoding. AHD / TVI / CVI belongs to "Analog HD" still uses coaxial transmission, but the resolution is increased to 720P / 1080P.
Comparison of core differences
| Comparison items | IPC network camera | Analog / Analog HD |
|---|---|---|
| Resolution | 2 million to 8 million pixels are common, up to 4K | Subject to bandwidth limitations, 1 million to 2 million pixels are the mainstream |
| Transmission medium | Network cable (Category 5e/Category 6), up to 100 meters | Coaxial cable, 75-5, about 300~500 meters |
| Power supply | Supports PoE, one network cable can handle data and power supply | Need to lay a separate power cord or use coaxial power supply |
| Intelligent analysis | The front-end can be run, the algorithm and computing power are almost not available on the camera side | It relies on the back-end |
| Scalability | It can be easily expanded by connecting to a switch | Subject to the number of DVR channels and board cards |
| Cost | The front-end is slightly higher, wiring and maintenance are less expensive | The front-end is low, the cost of long-distance wiring and large-screen modification is higher |
Suggestions for selection
- New Project: Prioritize IPC. Intelligent analysis, remote access, and later expansion are all more friendly.
- Utilization and transformation: If the original coaxial lines are in good condition and the budget is limited, you can use AHD for transition first, but pay attention to the attenuation caused by coaxial aging.
- Ultra-long distance: For scenarios exceeding 100 meters, fiber optic transceiver + IPC can be considered, or coaxial analog HD can be used.
- Special environments such as elevators: Anti-interference design is required, so special elevator cameras are preferred.
Common misunderstandings
Myth 1: "IPC must be clearer than simulation." The clarity depends on the resolution, lens, bit rate and installation and debugging. The look and feel of low bit rate IPC may not be better than Well tuned analog HD. Myth 2: "IPC cabling must be more expensive." Powered by PoE, power cords are eliminated and the overall cost is often lower.
Related content
How to choose surveillance camera resolution: 2 million, 4 million, 8 million pixels
08-27
How to choose camera lens focal length: 2.8 / 4 / 6 / 8 / 12mm field of view comparison
08-25
What is wide dynamic range (WDR)? Why must backlight scenes be turned on?
08-23
Low-light and starlight cameras: how 0.001Lux is achieved
08-21
The principles, effective distance and common misunderstandings of infrared night vision
08-19
The relationship between code stream, code rate and frame rate and setting suggestions
08-17
How to calculate monitoring storage capacity: comparison of resolution, bit rate and storage days
08-15
Differences and selection suggestions between H.264, H.265 and H.265+
08-13