CCTV Focus of the Video Surveillance Industry

Video Recorder Questions

What is the superior CCTV software? Which Video Surveillance as a Service (VSaaS) is the most user-friendly and straightforward to utilize? What are the most suitable IP cameras to pick for a surveillance system? CCTV Focus features software evaluations, assessments of services, and examination of IP camera vendors.

Video Surveillance Recorders

As technology becomes more accessible, many businesses and homeowners are looking for ways to increase security without breaking the bank. One popular method is to use video recording, specifically with CCTV systems. However, constant recording can quickly consume disk space.
With motion detection, the right codec selection, and some DIY ingenuity, you can create an efficient and cost-effective CCTV system. By understanding and implementing these components, you can not only save on storage costs but also ensure that your system is optimized for your specific needs.


1. What is the difference between a DVR and an NVR?
A DVR (Digital Video Recorder) is designed to record analog or hybrid cameras, and it processes the video data at the recorder itself. An NVR (Network Video Recorder) is designed to record IP cameras. Unlike a DVR, the video processing is done within the camera and then streamed to the NVR for storage or remote viewing.

2. How do I calculate the storage space needed for the video recorder?
The storage space required depends on multiple factors: the number of cameras, the resolution, frame rate, compression type, and the number of recording hours per day. Generally, you would multiply the desired storage duration by the bitrate of the camera stream and then add up the storage requirements for each camera.

3. How can I reduce storage space on the recorder when recording video by using motion detection?
Instead of recording continuously, many modern video recorders offer motion detection as a feature. By enabling motion detection, the recorder will only save video when movement is detected in the camera's field of view. This reduces the amount of continuous footage and can save significant storage space.

4. What codecs are available, and how can I use time-lapse for video archiving?
Common codecs for video surveillance include H.264 and H.265, with H.265 offering better compression and therefore more storage efficiency. For time-lapse recording, you'd capture fewer frames per second (or minute) to create accelerated video footage. This way, long periods can be summarized in shorter playback durations, saving storage space.

5. How can I save money with DIY?
DIY (Do It Yourself) solutions allow you to purchase components individually, often at a lower cost, and assemble and set them up yourself. This can save money compared to buying pre-packaged solutions or hiring professionals. However, it's essential to have a good understanding of the technology and setup to ensure proper functioning.

6. Do I need to buy an NVR, or can I use a regular computer for setting up a CCTV system?
You can use a regular computer with suitable video management software (VMS) to set up a CCTV system. This is often called a PC-based NVR. With the right software and enough storage, a PC can offer similar functionality to a dedicated NVR, though it may require more technical expertise to set up and manage.

7. Is disk reliability and fault tolerance important for a recorder, given it operates continuously 24/7?
Absolutely. Because video recorders operate continuously, it's essential to use high-quality, reliable hard drives designed for surveillance use. These drives are built to handle continuous recording and are more resistant to failures. Additionally, using RAID configurations can provide redundancy, ensuring data is preserved even if a drive fails.
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