Minggu, 09 Februari 2014

Security Camera?




couple4ano


How can i tell if the security camera system i want to buy has a clear picture or not over the internet?

I dont want one of those blurry ones where you cant make out the image when you are looking at it, i want something clear but not to costly.

If anyone has anything they would like to recommend i am looking for a day and night vision available motion activated camera system with good image quality for a reasonable price.



Answer
Use a computer. Get a good firewire camcorder. Get software that monitors the video.

Why do security cameras have bad frame rate?




ZerpDerp


Shouldn't they be all high tech with good technology?


Answer
Hello

Always buy DVR and security equipment from a good brand name manufacturer like Pleco, Bosch, Honeywell Ascendent: http://www.ascendentgroup.com

a good DVR does 30FPS or 30 frames per second this in the CCTV industry is called Real-Time Performance. so a 8ch will do 240FPS, 16ch 480FPS, and 32ch 960FPS many DVR will claim Real-tim but when you look at them they are only real-time CIF not D1 resolution.

The human Eye see;s about 20FPS movies are shot in 22FPS and a good CCTV system will record 30FPS NSC (25FPS PAL).

Unfortunately many people buy very low end systems which have poor frame rate and bad image quality because they buy from Amazon, "spy stores" Lorex, Q-see, NCIX, new-egg, and other online retailers who sell cheap products for china there were never intended to be anything more then a nany cam and should never be used to provide security.


Not all DVRs are created equal, in fact there are many options that offer varying performance much like the automobile industry. In the world of DVRs you can find the equivalent of a $10,000 Kia and a $350,000 Ferrari and everything in between. Both have 4 wheels and windshield but that where the similarities end, itâs under the hood that counts. Just like any other consumer electronic in the end you get what you pay for.

My personal favorite DVR is Ascendent X4 series: Ascendentâs Tri-Fusion Hybrid Platform allows for the creation of a true hybrid surveillance system by utilizing the advantages of Analog, Megapixel, and IP technologies .

The X4S also uses the latest H.264/SVC codec offer video substantially better quality,. While its file size sizes is 30% smaller than MPEG-4, 60% smaller than MPEG-2, and exponentially smaller than MJPEG.

The smaller the files size the more images are able to be sent, and the faster they can be processed improving both FPS and speed. File size is the heart of any DVR and goes far beyond just its streaming capabilities, as it also determines the recording storage time, how much you can back up at once, how fast it renders and searches video. The file size of a DVR impacts the performance of the DVR in just about every aspect from speed to longevity and is often the most important spec of any DVR.

If you are buying a DVR and streaming is a high priority I suggest you ask for a demo and connect to the DVR to make sure it is able to stream fast enough for your needs. Most DVRs say they have remote viewing but it is often too slow and laggy to be of any use especially if it is a standalone.

Just like any other consumer electronic in the end you get what you pay for. Most retailers and sellers make about a 40-80% profit margin, this is after costs like shipping and overhead. That means when you buy a product that costs $100.00 the manufacturer usually has only spent $30 to build it which simply means itâs not a good product and will probably have a working life of about 2 months. Cheap products are like disposable razors they are NOT designed to last for a long time and you will end up replacing them every 2 months.

DVRs need to be good quality as they run 24/7 (20X more than the average electronic device) and process anywhere from 30-480 frames per second which in a year is over 15 billion images, and a good DVR should last 3-5 years.

If you are only going to spend 70$ on cameras then you should buy 15 dummy cameras they will be just as effective and cheaper hen swan cameras.

Also as far as night vision or IR cameras go most do not give good images in the dark. Many companies claim good night vision but there are only a handful of brands who give night vision over 30 feet out doors. normally if a cameras is rated 150 feet of IR it will give you ok images at 30 feet at night and good images at about 20 if rated for 60 feet you might get 15 indoors and will be useless outdoors.

2 Great IR outdoor cameras
http://ascendentdvr.com/ascentseries2/52⦠($95)

http://ascendentdvr.com/vistaseries2/vis⦠($235.00)

Some good CCTV brands that I recommend are Bosch, Pelco, Honeywell and Ascendent.

http://www.ascendentgroup.com (best price/ performance)
www.honeywell.com
www.pelco.com/
http://www.bosch.com

Economical DVR's
Two good economical DVRs I would recommend are Ascendent's AVP-4120 DVR or Pelco's DX-400. They will allow you to view all your cameras instantly from anywhere in the world using either IE, or a client software. The AVP-4120 uses the latest H.264 codec to improve streaming and recording time, and will allow PCs and smart phones to remotely view and control your cameras. These are the DVRs I would recommend that are good quality and affordable from companies who stand behind there products.

Again if you are going to buy no name products save money and get dummy cameras they are just as affective and you will be less disappointed.

Hope this Helps,
williammorales93@ymail.com




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What is the RANGE of a 12V, 1Amp power supply of a security camera?




jake


Hello guys, Im connecting a security camera (12V 0.45A), but the cord of the power supply is too short (4 feet) and I need to make it longer. If I buy a male-female jack extension, lets say 35 feet long, will it loose power?


Answer
Short answer: that won't be a problem.

Technically, yes, the extension cord causes a bit of loss due to heat, resistance, and other factors. But a typical 120V 15A home outlet can supply more than enough power to cover the loss.

You have more to worry over the cord's placement than you do about its performance.

IP vs Closed Circuit Security Systems?




Nika


Sorry if this is the wrong place to post this.

I'm looking at pricing a security system for a client (new construction) and I'm seeing a lot of companies offering IP based systems and controlling everything from the cameras to lights with it. It all sounds nice and convenient but is it really worth it? How reliable are these types of systems? If you lose power or if you get a virus while you're connected to the internet, does your whole system fail? Is it better to stick with a more "old fashioned" closed circuit system for reliability?

It's a beautiful new home and I don't want to make it seem ugly or outdated with an older system but I want what's going to deliver the best in terms of reliability. Does anyone have any thoughts on these system and/or maybe have some good suggestions for systems I should look into? I'm not opposed to IP, but just want to be sure that their safety won't be compromised for the sake of looks.



Answer
Nika, it sounds like you're really looking out for your client- Good for you! You have several concerns:

First, you mention that this is new construction. I recommend hardwired cameras, regardless of technology (IP vs. CCTV). Hardwired is always preferred to wireless whenever wiring is an option.

Next, IP cameras are very reliable, as long as they're installed properly. Any video network you have will be behind your router/firewall, so it should be protected.

During a power outage, most video systems will be down, unless you run all key equipment on UPS power. If you're viewing video on the home's televisions, these will lose power anyway. You could still use PC's or laptops with battery power, provided the DVR or other video switcher has back-up power.

Modern cameras of either IP or CCTV design look pretty much the same, and won't detract from the appearance of the home. Placement affects this, more than the cameras themselves.

As far as whole-house automation, standards are still evolving. I advise finding a company with a good track record in home automation. Ask for references, jobs they've completed, photos, etc. If they specialize in home automation, they're more likely to handle any compatibility issues with various video, lighting, and other controls.

Good luck on your build, I hope it turns out great!




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