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SunnyKim

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Posts posted by SunnyKim

  5. Posted

    If the distance from camera is short enough(less 60ft), the DVR is suspicious for Grounding to Board & Earth. I do not think HD-CVI receiver chipset is good enough.

     

    That was something I forgot to list; I tried a jumper from the ground at the 120 volt receptacle to the b&C ground and that didn't help. Lorex is sending me another DVR to try, but I don't think that the problem.

     

    Do you think it could be the DVR?

    Yes, I do think the DVR-board is bad. Try another DVR(HD-CVI).

  10. Posted

    If you go for 4Ch analog systems, you can do with less U$300, including, DVR, HDD and Monitors. Make sure the DVR can do recording 960H or D1 format.

    With more budget, you can go for HD-Analog systems. These have 3 different types: HD-CVI (Daua), HD-TVI(HikVision), HD-AHD(NextChip, and other vendors). These 3 are not compatible each other. So you have to match the cameras and their DVR. You may check with "Lorex".

  11. Posted

    Please allow me to elaborate more on 960H. I do not think any sensor makers are producing image sensors, fit for True 960H, as said above. The price dropped so badly. They lost any interests to revamp anything for 960H, moving into HD Mega Pixels, in stead. That may explain why I commented there were no 960H sensors and would be no 960H sensors and cameras.

    All analog cameras are supposed to output either PAL or NTSC -Analog TV signal. The signal is sampled and digitized at a video decoder inside any DVR box. If digitized/sampled for 960 pixels per line, we call it "960H" format. If digitized for 720 pixels per line, we call it "D1" format. The old CIF format, 360 pixels or 352 pixels per line, comes from the D1 format. As the format 960H comes out newer than D1, we may say the image quality could be better, simply because newer / better image processing algorithms could be applied for 960H, letting alone the fact that 960H gives more 33% pixels than 720H(D1) per line.

  12. Posted

    Why are camera sold as 960h??? If the cameras are just pal or NTSC for output.

    What does the 960h option do in the dvr just make the picture widescreen in 960h mode when its recording ...so d1 would be the better option anyway..forgive am very new to all this..

     

    D1 size has 720 pixels of Horizontal Line, while 960H has 960H pixels, giving you 33% more of digitized sample of pixels. It may give you a somewhat illusion of better image. The quality of video depends on its processors inside the DVR box, as well. But true, 960H is the newer than D1. Therefore, techncially more advanced in its image processing algorithms. Thus, maybe leading to a better image. So, I do not claim that D1 would be a better option.

    Let me tell you this. Suppose you are making 960H sensor, fitting Wide Screen. Then How do you deal with Compatibility issue with old D1 DVRs? If no options are given or available on a camera side, that means No True 960H Sensor. No true 960H camera. Who cares the price has dropped down so badly for dealers and manufactureres?

  13. Posted

     

    Why do you reply to posts ...... What has pal or NTSC got to do with 960h ?

    Yes there is 960h cameras and yes you need a 960h dvr to display them at 19:9 format.

    ........................

     

    It sounds like you have a cheap China unit with having a built in monitor ..... Your cameras should still show at D1 and 960 .... But it sounds like your system can't cope with 960 as it locks out

    All you can do is run at D1

     

    The same reason you are replying to posts. You are respected with more than 6000 posts. But not respected if you do not respect others. To your question, "What has pal or NTSC got to do with 960h ?" ... Not easy to explain to you, a CCTV specialist.

    Nobody, even Sony, produces sensors fit for true 960H. And it will not. And you can see the cameras selling as "960H", whether you buy or not. No reason to argue with. Better reason with a wolf.

  14. Posted

    Not necessarily to be Hik or Dahua. Any cameras would be ok, nowadays. But you may experience flood of emails with false motion detections.

    Any cameras will not be ok, there is a huge difference in build, image quality, and most importantly firmware stability between no name camera brands and established brands like hikvision and dahua. Hikvision, even on their entry level 2 line cameras, has line cross and intrusion detection that can significantly lower false alerts. Dahua has similar functions on their mid-range models. So dont say any camera will be ok and that the user should expect a flood of emails..that will not be the case if the proper camera is purchased. This idea that all cameras are the same is complete and utter nonsense.

    Both HikVision and Dahua are using the same chip set and the same SDK. So are other CCTV makers. Some can make the exact copy of others. Some can make "Look & Feel" different. Basically the same. I do not think those good brands can offer a good tech service, worth of more dollars that you may pay. So, you better find and pay good local dealers, ready to help when you need.

  17. Posted

    Hi I have stand alone system....the encode record option gives me 960H/D1/HD1/CIF

     

    I can set it to D1 and all others but not 960H...I have 960H cameras...but when it set to that the picture freezes.This system has it own monitor inbuild

     

    I thought D1 was 4:3 and 960H was 16:9 why cant I set it to 960H with the cameras..

    Or will it still record to the 16:9 format being set to D1...so confused how the 960H thing works..

    There should be No 960H cameras. All analog cameras ouput NTSC or PAL signal. The 960H is the format (size) at DVR, not camera side, when the TV signals are digitized in D1 size or 960H size at the receiving end, DVR. If your DVR do not understand 960H format, you may set it to D1 format for all cameras.

  18. Posted

    I'm looking at a Lorex, almost pulled the trigger but then realized 1020 analog. Am i better with 720 digital? Any good deals/systems out there now? https://www.lorextechnology.com/HD-DVR-Security-system/1080p-HD-surveillance-system-with-6-cameras/MPX86W.p Looking in the $400 range (give or take $100), just around the house, 6-8 cameras, lots of night activity with cars in driveways so want good night ID. Is this a good system?

    Thanks!

    I Checked your link. Its recording resolution is all Digital HD, not conventional analog resolution of CIF or D1

    HD720P could be OK for your application

  19. Posted

    ...

    I already did.. See my post... Ip cameras are more flexible and superior in every way to analog.. Please explain how analog is superior.. It's not.. Analog is very limited... OP does not even need an nvr.. Just an ip camera with sd card slot.. Problem solved..

    Sick and Tired. Better see a doctor on weekend

  20. Posted

    ....

    If you may look at DVR system, not IP camera system, then you can come across the right solution for you. DVR system offers instant spot video display, motion detection, alarming inut, and geting you signaled wherever you are on, email/message, whatever.

    IP camera system may claim to do that in a very flexible way, but hard to find or to suite your needs.

    Absolutely false. IP systems can do all that and more. Including advanced motion detection like line crossing...Please stop posting purposely false info.

    Then please recommend a good one to the original poster. To me, IP cameras already lost "flexibility". IP Cameras have become already "Canned Food" which do not allow you to cook on your own taste.

  21. Posted

    hello all! obviously new here...have some challenges and I really need some direction on what type of camera/system I should be looking at to best meet my needs..hoping you all can help.

     

     

    First of all, we cannot see the part of the driveway where people park from anywhere in the house really. We have a driveway sensor that alerts us when someone pulls in but then it is quite difficult to find out who the person is, what they are doing, or if they are coming to the front or back door. This is the biggest objective...I would like to easily be able to see who is in the driveway. In my mind the best way would be if I could tap an app on my phone (even if it only worked while I was at home on wifi) and see the driveway...but I really want it to be fast, I dont want to pick up my phone, tap an app, have it spend 15 seconds loading/connecting and then the person is already at my door. For example I use WEMO light switches, and it seems to take that app too long to launch, connect to its cloud service and be ready to go...so by the time I get to turn my driveway lights on, the guest has already come or gone.

     

    I am not sure if there is a better option given that I am concerned about the time to load....like a system that somehow sends the livestream (maybe just using RG6?) to all the TVs in the house so wherever I am if I change the input when I hear the alarm go off, I can see a feed from the camera?

     

    It might be nice to have the system take a still photo every X seconds and store that on a hard drive for some sort of peace of mind when I am not home, and I am open to installing a few more cameras if its some sort of system that supports multiple cameras (probably no more than 4 though).

     

    We are in the middle of renovations right now so running wire, whether its RG6, CAT6 or electricity to the critical areas...shouldnt be a problem.

     

    Thanks!

     

    If you may look at DVR system, not IP camera system, then you can come across the right solution for you. DVR system offers instant spot video display, motion detection, alarming inut, and geting you signaled wherever you are on, email/message, whatever.

    IP camera system may claim to do that in a very flexible way, but hard to find or to suite your needs.

  23. Posted

    I read the link: Costco /QSee 16 Channel System,

    http://www.costco.com/Q-See-16-Channel- ... 13199.html

     

    Found out the NVR claims 4MP camera recorded at 20FPS rate per channel...

    It claims to handle 16 Ch.

    Can anyone confirm that the DVR can really de-compress and play back 8 Ch or 16 Ch of 4 MP recorded each at 20 FPS, simultaneously on a monitor?

    Its DOES handle 4mp. It DOES handle 20fps per camera. Why do you use the word "claim" as if alleging that this is a false claim?

    There is no reason to playback 8ch of 4mp video, because the monitor will NOT be displaying that if you have 8 cameras on a 1080p monitor. How many times do you need to be reminded of this? Why do you keep asking for this useless function as if not having it is a bad thing? At least the user can view full 4mp if they want to in full screen and zoom in on the important detail. Do you have a better solution? other than recording in low res 960h which gives you low res images that cannot be effectively zoomed in on and cannot provide a 4mp image either? As usual you make no sense.

    That NVR can playback up to 4 ch at full res..an 16 using the substream..which will still be better quality than junk 960h and the user has the OPTION to then select ANY of the cameras and watch up to 4 in full res at a time...but again, it doesnt matter on a 1080p monitor if you are watching a matrix because the monitor itself is NOT capable of displaying more than 1 camera in 1080p...Please please learn about this technology before providing incorrect advice to users on this forum!!! Enough is enough.

    Tell us why we need FULL 4mp res x 16 cameras on a 1080p monitor??? it makes ZERO sense.

    If the users plays back the substream and needs further detail, they can bring up a single camera in full screen then zoom in.

     

    I guess the chip inside the box can do play back (decoding simultaneously) 4 Ch X 1080P X 30FPS as a Max Performance. I mean the max decoding capability to be limited to 120FPS of 1080P. Substream is another cost to HDD and burden to Network...

  24. Posted

    If 960H is specified, that means we are talking about analog cameras, which are cheap and rugged. You can have 4ch analog systems with DVR+HDD included for around U$200, if you search around the internet.

    The notation 720/1080TVL could be wrong. TVL does not mean the number of vertical lines (Height) of a image. The 720P(720HX1280W) and 1080P(1080HX1920W) are all HD sized video.

    There are HD-Analog system, e.g. HD-TVI, or HD-CVI, or HD-AHD. These 4 Ch systems are available for less U$300, including HDD/DVR.

    If you can afford more, you can go for 1080P IP Camera and NVR system.

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