Ultra High Definition (UHD) CCTV Cameras

by | Feb 22, 2017 | Uncategorized

Ultra High Definition (UHD) CCTV Cameras & Storage

The Ultra High Definition (UHD) CCTV Camera is the latest addition to Higher Definition CCTV camera market. Many CCTV manufacturers have started producing 4K CCTV cameras. What is so special about UHD?

What is so special about UHD?

  • 4K cameras produce 3840 x 2160 pixels, aspect ratio 16:9
  • Twice the horizontal and vertical resolution of 1080p
  • The images are equivalent to 2160 p.
  • Some 4K cameras can provide 60 fps.

What are the drawbacks of 4K UHD CCTV camera?

Higher resolution and crystal clear pictures come at a cost. 4K UHD cameras produce a large amount of data. This increases the need for large storage and bandwidth.

Simply installing a 4K camera is not going to give any benefits. We need a true 4K system. This means we need storage and speed to support 4K cameras.

 

Digital data storage

WD purple Hard disk

The purpose built WD purple hard disk comes in 4 and 6 TB. This is a purpose-built hard disk for DVR & NVR surveillance systems. It uses SATA 6Gb/s interface. The WD comes with 3 years warranty and three different types.

  • WD purple for small applications. (3 years warranty)
  • WD purpleNV for small and medium applications (3 years warranty)
  • WD Re for large applications. (5 years warranty)

What determines the storage & bandwidth?

The digital storage is determined by the bit rate. The lower bit rate is better for a CCTV application, as it will require less storage and bandwidth.

However, the bit rate is hard to predict.

If you are using a CCTV camera for identification purpose, you will require a high bit rate. Therefore, it becomes an issue with applications requiring high resolution.

How can I keep the bit rate at a lower level?

Some leading CCTV manufacturers use sophisticated compressing technology to keep the data file small.

Axis CCTV cameras use zip stream technology with H.264 to compress the data.

H.265 is the latest compression used.

For example, VIVOTEK uses H.265 with their V-Pro H.265 Line network camera series.

VIVOTEK’s Smart Stream II is the latest technology used in VIVOTEK cameras to reduce the data size.

By combining both H.265 and VIVOTEK Smart Stream II, the camera can reduce bandwidth and storage consumption by up to 80%.

Conclusion

Before you decide to have a high definition camera, the purpose of that application should be clearly defined. And arrangements should be made to provide adequate storage and bandwidth.

At Cube, we run 3-day hands-on experience course for CCTV professionals.