shropna

Actually, if you use MPEG or H2XX based encoding, you should average avoid network load more than 50%. This is hard to manage streams from lots of cameras, with big "Key frames" pulses from them. What happens, when Key frames from all cameras will come at the same time? Some encoders (Indigo vision, NKF Siqura), has "network shaping" feature, to "extend" key frames to smaller packets.... But not all of cameras and encoders....

Not necessary. Use outside cameras together with auto iris lenses, thats all...

You should thing about spanning tree topology ( http://en.wikipedia.org/wiki/Spanning_Tree_Protocol ) in this network. Also, switches should support IGMP snooping for multicast. And, when you use BVMS, try to avoid routing, port forwarding.... Bosh use lots of random ports Here BVMS topology with iSCSI recording:

But lens really matters

Milestone is nice soft, but cameras license via MAC address.... If you want change camera, you will pay....

What camera, and what lens? I'm agree with You, that HD3000 (dome) series has average quality lenses.... But not HD 4600 On 2000 series lots depend on lens quality.... Imager wrong placement i'm dont find....

Yes, left side of image.. Imager placing fault, lens is good. Arecont cameras quality is still bad....

Wooden toys are expensive now

Some charts, for understanding:

Soundy, this correct, if you have wide spectrum (tungsten) lights outside. But, when lights outside is Natrium (Sodium) or Mercury based (lots of them), this light source doesnt have IR spectrum Yes, Sarix also has IR "refocusing" feature. About lenses. This is extremely difficult to build IR corrected MEGAPIXEL lens on small imager (1/3', 1/2') image format, due small imager pixel pitch. Ask about this issue Baylab, he is lens guru.

+1 Also, I would not pay a high premium to get bleeding edge switch technology unless there is an immediate payoff. If gigabit cameras become common in several years, it will be relatively easy to add a gigabit switch, when prices will be lower. Best, Christopher Guys, stop thing only about speed and PoE.... Yep, GigE protocol cameras (this is not network speed) You "hear" about that.... You can thing about this, if you have lots of cameras and one control room. If you system will have lots of NVR's, control rooms also, sw choosing will be more complex... First! Read, study and understood network diagram, and protocols. Second, choose sw. But, if You have 16 cameras and one workstation - forget this....

I am having a hard time finding a megapixel lens that is ir-corrected and has a max focal length of 30-50mm. The application is capturing license plates coming into a facility day and night. The camera is day/night with removable IR-Cut filter. I need the greater focal length to get a tight enough shot from the building the camera is mounted. If I had to make a choice between megapixel and ir-corrected what should it be? IR corrected lens, only if You use IR light. If camera just removes IR cut filter at dark scenes, not necessary to have IR corrected lenses. Also, megapixel lens should be "corrected" also from chromatic aberrations, so, less sensitive to light wavelength changes... And, some cameras, like Sanyo HD series, has built in automatic refocusing function, when IR cut filter is removed, for best adaptation to IR wavelength.

Big country With interesting history. Long time people was "DIY'ers" on all kind of products, and no Google and forums Also, i'm not from Russia, just know russian language. But, from one of countries,which was part of USSR...

First, you should look, what exactly protocols will use you video system. Then choose switches. Yes, when you have multicast, "any" sw. will not work, just flood all ports..... Some systems, as Pelco Endura, requires Layer 3 SW., because different VLANS and routing between them is necessary for correct system functionality. In "big" systems i'm use Extreme Networks SW..

HD4600 frame rate, at full resolution, setting MAX in camera menu, varies between 3-5 fps. misha, izvini za pozdnij otviet

Helps only in one way - you should have camera with 35 mm format imager On small imager, i thing, you will not gave good result....

Also, some liks: http://www.arvoo.com/workspace/static/uploads/axioma-duo301p-anpr-flyer.pdf http://www.microbus.com/Homepage.aspx http://www.planet4networks.com/acatalog/ANPR_LPR_Cameras_for_Highway_Monitoring_Paring_Lot_and_Mobile_Vehicles_.html http://sensordynamics.com.au/MobileANPRSolutions/tabid/56/Default.aspx http://ndi-rs.com/ukrs/v220 http://www.citysync.co.uk/go.php/en/products__services/anpr_cameras/jellybean_police_mobile_anpr.html http://www.visioncatcher.co.za/pdf%20folder%5Cvenom.pdf I'm just ask, maybe, somebody has some experience with this kind of systems...

Hm, Baylab. Yes, customer waiting specification, of course. Just some requirements. In car ANPR not should be "monster" for 4-5 lines. Leave this work for stationary mounted cameras.... Also, 16 MP CCD can capture max 3-5 FPS now, so, will not work, or work worse in real situation. Also, i'm should "cut" lots of vertical unnecessary pixels in this case, so, four Full HD 16:9 cameras can do more, than one 16 MP Also, customer needs one line - just front and back of police car. Also, for ANPR, illuminator should be synced with camera capturing, if you want capture only number plates, not all picture. Actually, ANPR cameras use 25 Hz pulsed LED, synced with camera fields... For "scene and driver face" picture better way is color camera, with constant illumination, or, "native" scene illumination, but this is not required.. Actually, customer wants automatic find cars with no insurance, no TUV, etc.... ANPR engine will be always synced with database of cars.... About mounting adapters - not problem in our country, I'm also able manufacture them (I build Lotus 7 replica myself )

Sorry, was very busy today.... Tomorrow will test on my VMS...

4 inputs module around 500 euro, rack for 3 cards (12 inputs) around 300 euro, rack for 10 cards (40 inputs) around 800 euro. NVR (VMS) you can use from Digifort, Milestone, Mirasys...

Not my video, but...: http://www.youtube.com/watch?v=NNwEYQznHMc And, "competitor" not disclosed

Hm. It looks, easiest way will be 4/8/16/32 encoders rack and NVR.... I'm successfully done few systems with this configuration instead of 4/8/16/32 channels DVR. Like this encoders: http://www.udptechnology.com/products/IP/NVC4000-R12_R40.html http://products.boschsecuritysystems.eu/en/EMEA/products/bxp/SKUPFT6205789195.P1.F.01U.165.101-CATM9184b4128f401d4dec7aeaafe7689695

Not only track. Zooms also

Try soft, with two different streams for Live and Recording, like this: www.digifort.com