The security digital video recorder, security DVR and the latest computer software has made the PC an integral part of surveillance. In order to have a successful installation of a digital video surveillance system, you should educate yourself fully regarding the technology and the marketplace. Above all, use only qualified and experienced technical consultants to design and implement your security system.
The videocassette recorder (VCR) was the main tool used for video surveillance before the coming of digital video. There were some inherent problems with videocassette technology. First, was the limited amount of time that a videocassette tape could hold. Time lapse recording was used as a work around to this limitation. Regular live motion video is recorded at thirty frames per second. Time lapse reduces this to only one frame per second or even less. With time lapse recording, the tape needs changing every 4 to 5 days. Somebody has to remember to change the tape.
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