New Dahua Cameras will not remember NTP server

Discussion in 'Dahua' started by Gadget -X, May 27, 2018.

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  1. cctvguynz

    cctvguynz n3wb

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    Are these genuine English firmware models or hacked Chinese models? Many hacked Chinese cameras (various models) won't display the time correctly during DST.
     
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  2. BrotherJ

    BrotherJ n3wb

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    I have also been fighting this Dahua Camera time problem for years. They are of little help. And we are authorized dealers. So yesterday I have a brand new 6mp eyeball camera from Dahua. I set the time, and no matter what I do, the darn thing jumps back one hour. I have tried every setting in every possible order. With or without time server enabled, with or without dst. Every possible setting combo. Still the same result
    So then I disconnected the internet from the small network I was working one. So now it is just the camera, a Mac mini, and a dumb switch. Nothing else. Now the time stays. THE VERY SECOND THAT I PLUGGED THE ETHERNET CABLE BACK INTO THE INTERNET, the damn time jumped back one hour! NTP Was off. DSL was off.WTF!
     
  3. looney2ns

    looney2ns IPCT Contributor

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    the only time I've seen this is when I have set the Time zone incorrectly.
    This pertains to the many Dahua cams I have setup in the past year.
     
  4. Gadget -X

    Gadget -X Getting comfortable

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    Yes sir. Mine are one hour off. I even tried settings to one time later, but it reverts back an hour.

    I have got one of ten cameras that is correct time. Funny thing is that it is set exactly like the others. Same version same settings. Pretty much gave up and use the DVR DSP time. A real bummer since the video from our Dahua cameras is fantastic.

    M
     
  5. c hris527

    c hris527 Known around here

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    Try This,
    Leave the time zone default to what ever it came out of the box at, I think mine were central time but I live in EST, disable all dst, set you clocks and see what happens
     
  6. TechBill

    TechBill Getting comfortable

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    I used to have similar issue until I filled in the setting completely on both Camera and NVR that it matches with each other then the problem never came back again. If you're using default DST setting, change it and also if you are using NVR, be sure the time/date setting including DST matches with all the cameras.

    Screenshot of my setting and I am in CST.

    Screen Shot 2018-09-19 at 12.33.57 PM.jpg
     
  7. Kitsap

    Kitsap Getting the hang of it

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    Bill,

    Check your DST settings. I think DST starts on the second Sunday of March.
     
  8. SouthernYankee

    SouthernYankee IPCT Contributor

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    My setting for CST. using a local internal server as my time source. I have had no problems with this setup. I do not allow my cameras to have any internet access, they are all blocked at the ASUS router.

    upload_2018-9-19_14-21-6.png
     
  9. J Sigmo

    J Sigmo Known around here

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    I'll bet looney2ns doesn't allow his cameras to access the internet, either. And I'm sure fenderman doesn't! The same probably goes for any NVRs (if they're running any).

    I don't allow my cams to access the internet, and I suspect a lot of the people who follow this forum don't either. Instead, most are running a VPN from their router or an always-on PC to allow access from outside of their LANs.

    Does it sound like those who allow their cameras to "phone home" are seeing this problem, while those who block their cameras from directly accessing the internet are the ones who end up with the time working fine in their cameras?
     
    Last edited: Sep 19, 2018
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  10. cctvguynz

    cctvguynz n3wb

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    Assuming you're connecting your cameras back to a Dahua NVR there is no need to configure the NTP settings or time/date in the cameras themselves. They will get all of this from the NVR.

    I've played with a large number of Dahua cameras both English/OEM and Chinese over the years and have encountered time issues with DST on a number of devices. In all cases these are all Chinese or Chinese hacked devices as it seems the Chinese firmware will not support DST settings correctly. While you can set the DST settings and they will apply correctly, the normal issue is to see the time continually jumping by an hour.

    I have never seen a genuine Dahua English or OEM camera that has this issue.
     
  11. Billl

    Billl n3wb

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    With Dahua IPC-HDW5231R-Z cameras running 2.460.0000.15.R,
    my recollection is that I determined automated time syncs using NTP appeared to be ignoring my DST settings.
    Sync PC was working fine, albeit a one-time update.
    I currently just upload to an ftp server, using SD emergency backup disks in the cameras, and have no NVR/NAS yet.
    I grudgingly switched off NTP (which was getting handled by my router at the gateway, for what that is worth, though I know that NTP works well in my network).
    You've reminded me to pay close attention a month from now, on the second Sunday in March! :)
    Sorry I can't be more scientific, but this might be something you want to test.