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CCTV HISTORY
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Thankfully, not the history lesson you might have expected. As far as digital technology is concerned, history is now anything that happened six months ago! Since the year 2000, in Canada at least, the trend has increasingly been to replace older videotape based CCTV systems, with DVR’s. From the onset, for many DVR's it was found that overall general quality degraded as compared to well-maintained videotape based systems. Although digital offers many new optional benefits, unless proper components and configuration setups are used, small resolution, and high compression, both contribute to extreme loss of image detail. CCTV was implemented as a security measure, and to act as a deterrent and record crimes on video so offenders could be identified. Investigators depend on the final quality of the exported video, most often burned to CD-R. It's so often this final quality of both the video format, and player functionality that is a let-down. Take a close look at this person who was within a few feet of the camera. High compression completely blended away detail in the face. This might have been the case where the live image would have looked great, but the play-back image suffered from irreparable compression, blending away any detail. 2008 - New Trend – Knock-offs. Some no-name DVR’s are surfacing and selling for very attractive prices, however are found to be un-reliable. Even the poorly photocopied manuals should be a signal that these systems should be avoided at all costs. |
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