Comparing the different recording devices in a CCTV systems Which are the older style CCTV technology and which should you have in a modern system?

1. CCTV: DVR VS NVR What’s the difference
A DVRor NVRare optionsina securitysystemyouhave tomake before settingupa video
observationsystem.Decidingwhatprice,installation,andbestvideoexcellence youcanexpect
makesa bigdifference.Nowscroll downtofindoutwhatyouneedto know aboutDVR andNVR,
includingwhatisNVRor DVR.In addition,the difference betweenNVRandDVR.Furthermore,
advanceddigital ornetworkvideorecorders,andDVRor NVRsystemsworkbestforyou.Therefore,
DVR VSNVRWhat’s the difference?
What is a NVR?
NVRis a full-formnetworkvideorecorder.Asthe name shows,the NVRrecorderrecordvideo
directlyfromthe networkbyCat5 or Cat6 EthernetcableswithanRJ45 plugor module.The NVR
systemisusedwithIPcameras.There are twotypesof networkvideorecorders.PoENVRs,regularly
usingEthernetportsto connectPoE cameras.Furthermore,WiFi NVRsenable connectiontoWiFi IP
camerasvia a wirelesssignal.
 To connectRJ45, Cat5e,and Cat6 portPoE cameras
 Outerports forconnectingexternal diskdrives
 VGA and HDMI portsto connectto the monitor
 LAN port to connectthe routerand mainnetwork
What is a DVR?
DVR standsforDigital VideoRecorder.DVRrecordersconsistof videosovereithercat5e andcat6
cablesor coaxial cables.These thencompresstodigital signalsandthensendingthe video.The DVR
systemworkswithanalogcameras.Theymustbe connectedwitha cable andcannot be usedvia
wireless
 Coaxial portforconnectinganalogcamerasor cat5e cableswithbaluns
 Outerports forconnectingexternal diskdrives
 VGA and HDMI portsto connectto the monitor
 LAN port to connectthe routerand mainnetwork
How Does the NVR/DVR Work?
NetworkVideoRecorder(NVR) protectsencodedvideosfromIPcamerasoverthe network.Thatis
to say,an NVRsystemdoesnotrequire anydedicatedvideoprocessinghardware.Inaddition,the
Digital VideoRecorder(DVR) hasa small chipinthe interiortoencode andprocedure analogvideos
indigital format.Therefore,youcanwatchand playthe recordings.
Both NVRsandDVRs are usedfor videorecordingandstorage.Once connectedtothe monitor,NVR
and DVRcameras can be easilyaccessed,viewed,andconfigured.
DVR SystemComponents – Pros, Cons, Differences:
DVR systemscharacteristicallyutilize analogsecuritycameras.Because of the camera,DVRsecurity
systemsusuallycostlessthanNVRsystems.Analogcamerasbroadcastanalogsignalstoa recorder,
whichthenprocessesthe videostatistics.ComparedtoNVRandIP systems,mostDVRcamerasare
lesscomplex andexpensive.

2. The analogue cameraconnectsto the DVR via a coaxial cable.Inaddition,thiscanbe a cat5e or cat6
and viaa balun.Coaxial cables –unlike datacables – do not powerthe camera.Thismeansthat the
twotypesof cablesare required.One forpowerandone forvideotransmission.Inaddition,
cameraswithaudiois a limitationbecause standardcoaxial cablescannotsupportaudio
transmission.
DVR recordersrelyonAD encoderstoprocessraw videodataintocamera-able footage.Asaresult,
each camerain the DVR systemneedstobe connectedalongwiththe recorder,aswell asaseparate
powersource.Thiscan eitherbe a local poweror viaa secondcat5e or cat6 cable.Standard
symmetrical cablesdonottransmitaudiosignalslocally–an additional RCA connectionisrequired
to supportthis.
NVR SystemComponents – Pros, Cons,Differences:
NVRsystemsuse IPcameras,whichare capable of processingvideodatabefore relayingthe
recorder.IPcameras are generallymore robust,andare capable of recordingand transmittingaudio
inadditiontoimages. Advancedhardware license platesandfacial recognitiononIPcamerasopen
the door to intelligentvideoanalytics.
If theyare not wireless,IPcamerasare usuallyconnectedtothe recorderviaEthernetcables.In
addition,theyreceive the poweranddata overthe same single cable.Theycanonlyrunup to 100
meters,butthere are more benefitstothese thancoaxial cables.Some camerasolutionsmaycome
witha PowerOverEthernet(PoE) connection,whichmeansonlyone cable isneededtosupport
electricity,video,andaudio.Thiseliminatesthe needforlocal poweroradditional cablesthatare
commonlyfoundinDVRsystems.
However,itisimportanttonote that not all Ethernet-connectedcamerasare PoE-capable–many IP
camerasstill require anEthernetconnectioninadditiontoaseparate powersupply.However,thisis
lessandlesslikelyasthe IPcamerasbecome more prevalentinthe industry
NVRRecorderisonlyusedto store and view the footage.Itdoesnotprocessvideodata – a stepwas
takenon camerabefore sendingittothe recorder.Therefore,because Ethernetcablescantransmit
audio,a camera witha microphone onthe NVRsystemcanrecord audioinNVR.
Advantages of internetconnectivity
One advantage of beingconnectedtothe Internet –the NVRcamerasystemcan uploadfootage to
cloud-basedservers.UnlikeDVRsystems,theyare notlimitedtoon-steamstorage,andasa result,
theycan supporthighercapacitythan DVRsystems.
The biggestdifference betweenNVRandDVRisthe camera and cablingtheyuse.A networkvideo
recorder(NVR) canrecord the IP camerawitha wirelessconnection(viaWiFi NVR) orviaEthernet
cables(PoENVR).However,adigital videorecorder(DVR) recordsviadirectcable links.
Whichis better,NVR or DVR?
In short,Both DVRand NVRrecord videofootage onahard drive.Theirdifferenceslie intheirdesign
and implementation.Furthermore,howtheyprocessthe raw dataand how theyare compiled.
Finallyconcerningwhatcameratheyare compatible with.The bestsystemforyouisultimatelythe
balance of needs.Toguide youinyour decision,here are some thingstoconsider:
What hardware do youcurrentlyhave (e.g.wiring)?Are youreadytochange that?
Do youhave in place programmingnetworktoolsandswitches?

3. How much maintenance and usabilityis needed?
Who needsaccess?Isremote accessnecessary?
Addingandmovingcamerasisnot complicateddue tothe limitednumberof portsoneach recorder.
Commonlyconsideredasmore “traditional”systems,DVRandNVRhave theiradvantagesover
surveillance.Though,astechnologyadvances,manyorganizationsneedmore storage space,
scalability,datasecurity,easeof use,videoanalytics,andreliableremote righttouse.
Summary: DVR VS NVR What’sthe difference
As youcan see inthisarticle,we are more inclinedtowardsthe latesttechnologyof PoEandWiFi.
Thisis because of the flexibility,modernstandards,andaccessto moderntechnology.
The majorityof all newCCTV systemsare IPand NVRdesigns.However,there are alotof legacyDVR
systemsthatstill needmaintainingandaddingtowhenprioritieschange.
We can advise anddesignthe correctsystemforyour specific requirements.