Hdd Cctv
Can 500GB HDD to 7-14 Days CCTV recording?
Ok got a scenario where I will be using a CCTV system to record direct to HDD?
The target is to extend a continuous recording to 7-14 days?
a) Is it possible?
a i) If not possible what is the maximum it will do?
b) What format should be used?
c) Codec if required?
d) What resolution would be required / Bits per second.
Please note the quality must be viewable to identify any perpetrator but DOES NOT need to be over the top with clarity to the point it is high definition
Vulcan a good camera can handle light no problem Ascendent Technology Groups camera have integrated HLC and WDR high light compensation, and wide dynamic range which eliminates Bright light and deep shadows.
http://ascendentdvr.com/domecameras/i1-600vrd650-36ir-hk.html
You cant use just a standard HDD Calculator and expect to get an accurate answer.
every DVR has a different file size even if they used the came codec
Also Calculators are usually designed to make products look better then they are so calculators are based on "optimal conditions) in other words your never going to get that.
Also how most DVRS work (mpeg4 and h.264 codec) is they only try to update the motion on the picture. If I wave my hand in from of a camera it only tries to update where my hand moved so instead of creating the whole image every time (up to 30FPS) is tries to only updates the new pixels this reduces file size. This means that recording time is not just based on how long you are recording for but how much motion there is inside every frame.
A good example is a standard digital camera it takes 10mp resolution but you will notice very file size is different due to amount of colors, edges, contrast etc. not to mention the resolution and frames per second.
File sizes on DVR are also affected by the quality of cameras used resolution, signal noise ratio ect.
Generally speaking H.264 is better then MPEG 4 but its not always the case in fact the dvr with the smallest file size in the world is ascendent X3 DVR which is an MPEG4 dvr that has file sizes as low as .4kb for a CIF image (have seen this for myself) and is made to stream video over cellular and satellite networks.
Analog camera will almost always have a smaller file size then IP cameras and will cost you less to both purchase an maintain but our limited to D1 resolution.
Don't buy from ebay or no-name brands it wont work well you might as well buy dummy cameras there cheaper and will be just as effective.
In the end you want to buy your DVR from a Brand name DVR manufacture
These brand manufacturers also have a complete line of CCTV cameras and DVR for any application from residential to military and stand behind there warranties.
http://www.ascendentgroup.com (Recommend)
http://www.honeywell.com
http://www.pelco.com/
http://www.bosch.com
Ascendent Technology Group 's has a really good 4 camera package for around $500.00 and will sell direct if they don't have a dealer in your area.
http://ascendentdvr.com/cctvpackages/avp…
Not all CCTV equipment is created equal, in fact there are many options that offer varying performance take cars for example. In the world of CCTV you can find the equivalent of a $2,000 golf cart and a $350,000 Ferrari and everything in between. Both have 4 wheels but that's where the similarities end, it’s under the hood that counts.
95% of all wireless cameras are compete junk and any wireless camera under $400 run on 1.2, 2.4GHZ or 5.8GHZ and wont offer encryption. This is bad for 2 reasons one the signal can easy be jammed, with a laptop you can actually hacked video feeds so a criminal can use it to spy and know a good time to target your business or home.
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 it’s not a good product and will probably have a working life of about 2 months. There is a reason these products are 1/10 of the price of good and reliable DVR brand names. The type of seller these products attract are online sellers (ebay) and will make profits margins as low as 3% which means they can’t afford to offer good service or allow for RMAs (returns). 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.
Now some products can be made cheaply like ipod cases, screen protectors, and other simple products with no moving parts or electronics. 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.
A true DVR and camera require years of research and development to facilitate the seamless integration of both the hardware and software. DVRs are highly complex systems that must run 24/7, processing millions of images per day and are one of the few products that can’t be made both well and cheaply. Cheap and inexpensive products like Q-see, X10, Swan, Lorex, and other low grade DVR’s and cameras sold by Tiger Direct, Newegg, radio shack Sams Club, are not used by any security professional and should only be used by hobbyists.
To be honest the "frys" productsare Garbage and are not used by anyone who has worked with CCTV or security products. I They are poor quality especially for IR cameras, due to low quality material, low S/N ratio, and low grade CCD image chips.
Also as far as night vision or IR cameras go most do not give
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