In order for you to increase the functionality of your CCTV system it would be a great idea to obtain a DVR (digital video recorder) system. A DVR, as the name suggests, will record signals from your CCTV cameras onto a hard drive in digital form. This is far more efficient than recording in an analogue format as an analogue camera system has to be recorded onto tape (like a VCR), which occupies much more space than when in digital format. Some DVR systems will be able to convert signals from your analogue camera into a digital form and then store it onto your PC. So you can use a DVR with an analogue camera system.
 
Due to the fact that a DVR can store surveillance system footage in a digital format, it means that you are afforded much greater functionality. This is because a PC finds it far easier to manipulate digital data as opposed to analogue data. For instance, with analogue data recorded on tape, in order to view footage of a specific time and date you would have to take time to rewind your tape to get to the part you want to view – like using a video tape. With a DVR you will be able to easily jump to a specific time in your footage in a matter of seconds – like using a DVD movie.
 
A DVR system is much easier to use. It can even be linked to a network which would allow you to remotely view your footage over the internet. This optimises your ability to take action if something dubious does occur. Some DVR systems also allow you to quickly change your viewing camera quickly and easily, as well as alter the frame rate at which your security cameras are recording.
 
A DVR system comes in two forms, either a PC based system or an embedded system. The PC based system is connected to your PC with software included to help you use the system. The embedded system comes with its own operating system and software. Do your research to find the DVR system which would suit you the most.