Recording is essential to the effectiveness of any video security
system. Without recording, you need to have an employee watching a
monitor at all times – hardly a cost-effective solution. And even if you
spot suspicious activity, without a recording, you have nothing to use
DVRs offer so many advantages over VCRs that they have rapidly taken over as the CCTV recording solution of choice:
- Ease of locating events-
Instead of fast-forwarding through hours of tape, DVRs can instantly
retrieve images from any specific time or date, or automatically skip to
the point on a recording when something changed.
- Storage quality-
Like all tapes, video cassettes start deteriorating almost immediately
once you record on them – and the problem gets worse every time you
reuse them. DVR recordings have no degradation at all since they are
stored onto a hard drive.
While analog VCRs can either record or play, most DVRs can do both at
the same time, letting you review images while still recording.
- Smart monitoring-
The DVR can be set to take one picture per second or less – just enough
to create a running record. However when it detects motion, it can
automatically bump the recording speed up to full (30 frames per
second), getting every detail of the unauthorized activity.
businesses that do not want to constantly change tapes, DVRs are
definitely the way to go. While security VCRs usually offer a time-lapse
mode that lets them record for long periods of time, the resulting
images are not a good record of events – they record only one snapshot
every eight seconds. To get higher quality, you need to change tapes
every day or more often. DVRs, on the other hand, can record for weeks
or even months.