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Cameras and Cable Questions

Why is Digital Video Recording better then my VHS machine?

The main advantages of digital recording are maintenance-free operation for longer periods of time and increased stream resolution. Consider a 24 hours time lapse VCR, which does the job in most cases. Every 24 hours, one has to change the tape, or program the VCR to automatically start over when the tape reaches the end. Time-lapse VCRs that record hundreds of hours on a tape - they just do not record every fraction of a second, but merely one image at every x seconds. If recording is not triggered by motion detectors, one can fail to catch the very important moment on tape. In another words, in order to record continuously (say 30 frames per second), there is only so much a tape can take. Digital technologies increase the storage ten or even hundred fold: a 60Gb hard drive stores live video for a week.