SunnyKim

Sunnykim .... You talk so much crap ...... Please tell us what you think of the 15mp or the 29mp cameras out there ....... Are they not better image that 3mp Every one of your posts is PAL/ NTSC or only one chipset. Chipset has moved on You are right about the American company techpoint who are the owners of tvi and SDI and licence out there tech to the likes of hik and avtech....... I think they will welcome a phone call from you before they release the 8mp this week...... They might need your chipset info and why above 3mp does not work. Technology changes every day new chip and sensor tech to cope with better images. You are right analog is much cheaper (not by much) but it's low image You need to move forward with technology and maybe your post will not sound so stupid. In Chinese, Hard to teach new tricks to an old dog, Poor Chinese Dog who needs to learn English at the same time.

Please allow me to add my two cents. HD-CVI was invented and owned by Dahua. It aimed Monopoly. Therore, you are destined not to have many choices over the selection of the products, in terms of Pricing and Product, letting alone the performance. As a counter action, a Fabless company, Techpoint, invented almost the same wheel, HD-TVI in support of HikVision who should have to compete against Dahua. Though they claim open policy for its technology, the choices of Cameras are rather limited because Techpoint do not put the camera chipsets, yet on the market. The camera makers have to buy the discrete chipset from Techpoint. That means a cost up. The 3rd one arrives under the name of HD-AHD by Nextchip. It dumped and dominated the Chinese market and its export market with a very low priced chipsets for cameras and its receiver chipsets for DVR end. All three mentioned technology is based on the same analog modulation schemes as NTSC -PAL Like. So not much originality or genuiness, in views of Technoloy itself. In order to avoid patent fighting, they are slightly different each other. Not allowing each other's compatibility at all. They do not want to sit on the same table. That's sad to CCTV customers. Finally, please do not expect any kinds of good visual quality for over 3MP pixel. No good because they simply increased number of pixels under physically limited bandwidth of the cable. That's another cheat to CCTV customers. Sad.

HD-TVI Tribrid would do it, as long as the name means the support of analog cameras, HD-TVI cameras, and HD IP cameras. It might be more expensive than Hybrid that do not cover IP Cameras. You may check out Costco, Sam's, and other major Electronic outlets, etc.

You've gotten to a correct conclusion. HD-TVI cameras require to be matched to a corresponding HD-TVI DVR.

The original post does not seem to belong to your business. Please cool down to bed. What is it with you and analog cameras? Dial-up Internet is very cheap and reliable too, yet I don't see anyone recommending it for everything. Yes an analog camera is Ok for some jobs, but you recommend it for *everything*, without even knowing specifics.

I do recommend analog systems. Very Very Cheap. Most of analog cameras are tough enough to survive out in the rugged field and market, for such long years. They can be connected to ethernet -copper-lines and to DVR box for a short distance. You can also consider HD analog (HD-AHD, HD-TVI, types) system which slightly costs a bit more. Both systems provide an instant spot viewing. As explained, the delays of IP camera systems are unavoidable. Hoping to keep us updated.

There should be no cameras claiming 960H (960 X576). 960H is the term for DVR box which samples and decodes the camera signal. 926 x 576 could be a TYPO.

As explained above, it is not the problem. That's the way it goes. WDR increases, in general, Contrast among neighboring pixels and at the same time, increasing Noise level. So WDR is not to be recommended at night (Low Lighted)

Why don't ask for a refund or something? The cameras manufactueres need to learn that their cheap LCD panels are spoiling their brands and need to take actions.

All DVRs support the remote access from your phone or internet as long as the DVR is hooked on to the Network. Cheapest ones are analog cameras. The second cheaper ones are HD Analog cameras. I like to recommend HD-AHD or HD-TVI cameras and its corresponding DVR.

Your understanding is Correct in that quote" then I tried increasing the WDR because very sunny areas were washed out, and dark areas were too dark." unquote. And I do not know how the algorithm is implemented on their chipset. And I would try as below. Please note pixel values are to be represented as 0 to 255. If over than 255, it is clipped to 255, "washed out". No way to get returned with original value, if not properly implemented. Firstly, Gain Down, say 80%, in stead of Gain Up. Hoping this action can avoid chances of " Washing out", in case Brightness Up and WDR On in the next coming actions. Secondly, Brighness Offset, say 10%, UP. This makes Dark Pixels shifted to Bright Pixels. And Bright Pixels could be washed out, but could be saved a little bit, due to "Gain Down" action above. It is true that brightness offset control, in generally common implementations, comes before Gain control. But this case we reverse the path. Thirdly, Play with WDR. WDR smoothens out the peak distributions of Dark Pixels and Bright Pixels. Bright pixels get shifted to slightly dark levels, and Dark Pixels get shifted to slightly brighter levels. They are wrong if they allow "washing out" in WDR.

Trial and Error could be the best option. Hoping the following would help. Gain control is implemented based on Multipliers or Amplifiers. Brightness is done with offset control, using Adders, applicable before Gain control. WDR is based on Histograms showing a distribution of pixel brightness level (0 to 255 range) of a frame of image. WDR re-distribute the histogram in such a way that bright pixels get darkened and dark pixels are brightened. Most of time, dark ones getting brightened. So, they may recommend to turn off WDR or Gain Up when Lighting is not sufficient at night, as it may amplify, in a good chance, the noise levels for the image sensor involved.

a few milliseconds is "much delay" ? Please let me give you the number slightly over "a few milliseconds". In 30 Frames Per Second System, one frame interval is given as 33 milli seconds. In video compression, they usually start doing compression, at least two frames of a video sequence available. That means a minimum of two frame delays. One frame needs to be used as a reference image for compressing the next frame in que. The same applies for when starting to decompress. And they do not start displaying video sequence, at least two frames available. They do not start sending compressed bit stream files till getting their buffer memory more than half full, countable as 1 frame delay. The same applies for when triggering decompression at the NVR side. We did not count in the allowable Network Protocol Delay that Software engineers are enjoying as Buffering for a smooth and safe Traffic Flow. If you have IP camera system of less than 300 milli seconds of delay, that 's the one you can recommend anybody, anytime.

One of drawbacks of IP System is much delay in Live View, due to compression procedure before being delivered to NVR and decompression before being displayed.

You seem to have something against IP cameras, which is strange, because they aren't going away. Analog cameras will become less and less common just like most other things analog. And IP cameras are more expensive? I think that depends on a lot of factors. The ability to use a regular computer as a DVR, without needing a special interface or security DVR, along with plugging them right into an existing LAN is a huge advantage, and potential cost savings. You get what you pay for. I could have bought analog cameras and spent a little less, but I love my IP cameras and how they are simply a device on the LAN, and the ability to clearly capture license plates and faces; something that my old analogs could never do. jrmymllr, I have not always been against IP Cameras that have both good things and weak points. I do believe that a cannon should not be recommended for destroying a roach.

IP camera system would not fit. Buy an 8 Ch -analog DVR that can record each 8 Channel in each D1/WD1 sized video. Then pick analog cameras for out doors.

This is we're your wrong and misleading tvl does matter on any system 320 line is CIF which takes us to you other wild comment ......the signal can be digitised to D1 .....I don't see how the op can do that when its a CIF system .... So again wrong information that does not exist on ops unit. Also wrong ..... Like I keep telling you the op DOES NOT HAVE a standard camera to a recorder..... So there is no option for a local power supply to the camera ..... And on this system audio is also part of power input This post is on to its second page with you trying to correct information that does not apply to this setup ..... So that is we're you are also misleading In Chinese, No way To teach New Tricks to an Old Dog.

Yes that is probably true ...... BUT you are giving that distance af under 100m But it's far greater than 100m. And that's the part of your post that is wrong .... And has to be corrected The Trick is, up to now, turned out to control down the high frequency components of video sequence for extending distance, as they can not guarantee the quality of cable already installed or to be installed.

Not the correct information. Sunnykim if you don't know the product then don't answer a post. It saves time for members to get the right information. Tvi limited to under 100m is wrong New Trick To Old Dog: The distance and maintaining high contrast of visual quality have been the Tech Barrier of HD-Analog Cameras and DVRs.

Anyone who's read these forums long enough to see at least a few of your posts know you're full of misinformation. The one thing that really bothers me is how you promote analog cameras like they're superior to anything else. This just boggles my mind. I hope nobody has taken your advice because it's practically all wrong. You are not proving anything that I am wrong. You just like to believe that way. Please bring it on, as long as you can find. I do not think that I ever mislead anyone with wrong information. I do recommend analog systems, simply because they are very very cheap, easy to start with, and have been there for long time, letting alone the fact applicable to a much longer distance. The next one I do recommend is HD Analog System simply because they are a lot cheaper than IP Camera System. Mostly they are coming here for saving money and simple home applications. Money of others should be valued as much as yours.

Kinds of HD-TVI or HD-AHD type cameras are to be working with RG59 cable. None of such cameras are supported by old DVRs. But these HD analog cameras are supported with the corresponding DVRs for each type. In a short distance of less than 100 meters, there would be no problem in maintaining a resolution of 1080P, I understand.

The camera might be the HD-Analog Camera that can be grouped either to HD-CVI, or HD-TVI, or HD-AHD. They are not compatible each other. So, you have to match the camera with the corresponding DVR box.

No that info is wrong ... Also wrong .... The reason why I replied to this post is the model number in the discription. It is a Samsung 100ohm system ...... Can't do 75ohm Samsung sharp lorex all sold 100ohm systems and could only use specific cameras and only use the cables that came with the kits. They did not run on coax. So ops distance would of been no good. But if you think the industry only use the chipset you keep posting about then that's your problem on not moving forward on your technology. You are temporarily excused of all false claims. Wikipedia "Hi3515" and "impedance matching".

700TVL cameras are likely to be analog cameras. The resolution can be NTSC/PAL : D1 or WD1 of 960H resolution out: 720 X480 or 720 X576, or 960X480, 960X576. AHD cameras are likely to support 720P (1280X 720 sized). The AHD DVR are likely to work compatibly with, either analog cameras or 720P (HD) cameras. If not, it could be the chipset version, or softwares. Please check your DVR manufactuerer.

We have had some stupid people on the forum over the years .. But you are at the top. Reading your posts I think you are here to just wind people up .. Everything you say is the opposite. Yes I do know TVL AND IF your saying cif never existed then I think the days of you giving advice are over. You have cctv and tv broadcasting mixed up Just the same as 10 years ago with cheap DVRS from China the sales pitch was DVD quality ...... It never was But here we are again .... Ops system is a cif unit with no recording ( needs a vcr) If your going to give the op your advice that he has a D1 system then yet again you have turned another post into a load of rubbish If it looks like a chicken and walks like a chicken and sounds like a chicken YOU would say it's a duck. So again to op it's a cif system 100ohm with no recording .. So is it worth the time and effort when analog is so cheap as an alternative and have recording and have networking and have 960h That will be 352x240 I have to confess that there were some instances when I had come to doubt about the intellectual capacity of the guy who records more than 6000 comments in this forum, for long years. It is you, tomcctv. There were many times you were crossing lines. But considerations of mercy were given. No more, for you dumb. You do not understand technology that you have been living on. If you do not respect others, you do not expect to be respected, poor Chinese. Please note that nobody ever invented anything for CCTV. The CCTV industry has employed equipments from TV industry (cameras, vcrs, TVs, cables, including Tivos, HDDs, monitors), just because simple, cheap, and available on the mass commercial market. All analog color cameras output analog CVBS(NTSC/PAL), the base band signal. They are digitized in D1 format, so called BT656 or BT601 for being processed digiatlly afterwards, avoiding possibly analog CVBS path that causes de-gradadtion of video quality. The DVD system was invented just to replace analog VCR for D1 -Resolution, in Digital Format. Thus they have good reason to claim DVD quality for their analog -CVBS based system. Why CIF? simply because the hardware chipsets could not afford to compress D1 sized video. Only 8 years ago, CIF recording was the defaultvideo size in the CCTV industry. Video systems require the impedance matching to be 75 Ohm, not 100 Ohm.