Quality And Resolution Cctv
To help you understand what the FPS or Frames Per Second to actually buying a Digital Video Recorder (DVR) as part of your CCTV installation.
Resolution
There are three types of resolution of the DVR, which:
* CIF (320 X230 pixels)
* 2CIF or Half D1 (720 x 260 pixels)
* D1 (720 x 520 pixels)
CIF: low quality resolution at 320,230 pixels. Think about the image size of 17 per day or 19-inch monitor to a PC – usually a resolution of 1024 x 768 or higher at 1280 x 1024 – this is the big picture. Now imagine the size of the resulting images in CIF: 320 x 230. Very small objects at a distance seems unclear. 2CIF or Half D1: Middle resolution of 720 x 260 pixels – a little better. D1: the current highest quality with 720,520 pixels. This is the same as DVD quality. SWI security concepts would always recommend this, although we have installed a system with full D1 DVR evaluated and used 2CIF or CIF recording quality to get a longer recording time.
Price Frame DVR Real-time recording at 50 frames per second (FPS). This is the number of images captured on a video stream every second – and this is a camera. Therefore, to four cameras in real time (at 50 FPS) to take you No. FPS x Camera (4) multiply – that is, 100 FPS DVR assessed. A DVR is only assessed at 50 FPS can only be recorded at 12.5 FPS. However, this is still a good frame rate as the human eye only processes about 12 frames per second anyway. So, CCTV system with eight cameras require a connected DVR 200 fps Real-time and with 16 connected cameras DVR 400FPS real-time needs. By reducing the number of frames per second per camera, you get more recording time. This is usually what we use to select the size of your hard disk to calculate.
For example, to record at 12.5 FPS at D1 resolution, 500 GB hard disk nine days before the start overwrite recording. Therefore, if the policy of the Company at least 30 days to take to maintain, you should consider using a 200GB hard drive (for 36 days) or using a recording CIF resolution at 6 FPS.
H.264 compression MPEG4 video compression now H.264 Vs. It is also known as MPEG-4 Part 10 or AVC and is set to the new standard for video encoding are. This reduces the size of the digital video files of up to 50% – which means more time recording on your hard drive, so lower costs. It also allows for easier viewing on the network with a faster Internet streaming.
No related posts.
Tags: Business Management, Business Networking, Business Tips, Printing Your Jobs, productivity skills, smartphone advertising