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IP Cameras - Downsides

As noted previously, IP cameras once provided some negatives. In order of significance, some of the "issues" with IP technology included... time sensitive changes have been noted below in green.

    ... High Cost. Initial purchase cost of standard IP cameras was on
        the order of 2-4x the cost of "equivalent" analog counterparts.
        Equivalent in quotes because some may argue, "There is no
        such thing
." We suggest equivalent resolution is the best
        definition of "equivalent."


        Today, MPIP cameras provide 6 to 25 times the resolution of
        analog cameras while the cost adder has been reduced to 
        something in the range of 20-30%.

    ... Expensive Recording. While a typical 16 channel DVR
        (complete with software and ample storage space to maintain
        30-45 of recorded history on 16 cameras may be in the $3K-4K
        range an "equivalent" NVR (Network Video Recorder) can easily
        be priced in the $6-10K range and this DOES NOT include
        software. 


        Today, the cost of PC-Based NVR technology is identical to a PC-
        Based DVR. One-time PC-Based software license cost is 
        something in the range of about $200 per camera. On a 
        percentage-wise basis, this value is something in the range of 
        10-15% of the overall system cost.

        On the stand-alone (embedded) machine side of things, IP 
        Technology is almost identical to analog. Additionally seldom is 
        there any added license fees or remote client expenses.
    ... Network Issues. IP advocates are quick to point out that
        businesses often have computer networks in place and
        therefore no additional cabling or hardware is needed.
        However, each camera requires a port to plug into the switch,
        so more or bigger switches may need to be purchased. POE
        power over Ethernet) adapters may need to be added. If the
        existing network will not handle the load the "advocate's" sales
        point quickly turns to, "...expensive hardware upgrades that are
        necessary to comply with specification."


        While it may be possible (without significant degradation) to 
        implement a few MPIP cameras on an existing network a full-
        compliment of IP cameras will still cause problems. Honestly, this
        is not really a problem with the technology it was more a problem

        with the early advocates of IP (who probably didn't care much 
        about any negative effects) - see next item.

    ... Network Bandwidth. Is a critical consideration almost
        universally ignored by the "advocates" of IP ONLY
        solutions. One cannot expect the addition of a dozen or more
        cameras (each providing about 700-750 Kbps of bandwidth
        demand - double that if audio is included) to an existing IT
        network without resulting in a significant slowdown in network
        data transmission rate. Its little wonder why many companies -
        after everyone's Internet access and e-mail slows to a snail's
        crawl - end up installing an entirely separate network system
        just to handle their IP video. The inclusion of Mega-Pixel IP
        cameras only makes the problem worse!


        Recent advances in most NVR's - the addition of a second 
        Network Interface Controller (NIC) - have virtually eliminated this
        previously valid concern. Today, video bandwidth demand is "off-
        loaded" to a second network (outside the range of the "company
        network") while the server passes minimal bandwidth (2-5 mbps)
        to client PC's for the purposes of monitoring and/or system 
        administration.

NEXT PAGE - MegaPixel IP Cameras...

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