Dahua Camera issue

C

chriscam11

n3wb
Dec 15, 2024
6
4
south yorkshire
Hi
Could anyone help on this please. I have just recently purchased a new dahua Nvr 4028-8p-ei 8 channel -8poe. I'm an issue with one of the camera's the model is DH-IPC-HFW4431R-Z
The camera comes on for a split second then says disconnected. Then i get on screen Failed to find network host . It does keep repeating this and tries to connect.
I have tried resetting the camera but no joy.
It will connect straight on the old dahau nvr .
Thanks Chris
 
You may be exceeding the capacity of the NVR.

How many cameras?
What is the resolution of each?
What is the bitrate of each?
What is the FPS of each?

You may have to lower bitrate and FPS and maybe even resolution of cameras to run all of the cameras.

For kicks make a camera like the lowest resolution at 500 bitrate and 5 FPS and see if the camera shows up.
 
Last edited:
Hi
I have 6 camera's 3 which are 2 megapixel 1 1080p and 1 that is 6 mp, the that won't connect is 4mp.
It would be strange if that was the case as my old nvr is over 8 years old and never had an update since 2016 and they all work without any issues.
Thanks
 
Is motion detection being done in the cameras or the NVR? Using the NVR for anything more than recording and alerts cripples the capacity of the NVR.

You should be doing as many settings in the camera as possible.

As an example, look at the bandwidth drop if you use the NVR AI instead of the camera AI:

1735491901548.png


Here was a thread just yesterday with a 4108 NVR and by setting the triggering in the camera instead of the NVR got him access to all the cameras.

M

Thread 'Removing Smart plan from one camera and adding to another on the nvr'

Hello,

I've realized that I cannot have 8/8 cameras (IPC-HFW2449T-AS-IL) pushing smart plans to the NVR (NVR4108HS-8P)
I wanted to have tripwire and intrusion enabled on all 8, but it seems that this NVR accepts only 6 channels for perimeter protection , please correct me if I m wrong NVR4108HS-8P-4KS3 - Dahua International.

Reason why I wanted to have intrusion and tripwire is to control them with different scheduling (that works but its another story)

If that is indeed the case, my first question is how can I move this smart plan allocation from channel e.g 6 to channel 7...
 
It sounds to me like an IP conflict.

I would manually reset the camera while plugged in using the onboard physical reset button
 
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Thanks for that bigredfish I have tried that , there isn't an actual reset button on the camera I have tried jumping across with a piece of wire where the reset button would be.
Am right that it's set to a private network when all cameras are plugged into the nvr
Such as 10.1.1.70 ect
 
I can't guarantee my info is correct. It's from my own experience having run 4431R-Zs in the past.
The HFW-4431R-Z is a chinese market camera. Starting a bunch of years ago, Dahua NVRs began refusing to work with chinese market cameras. Since your new NVR is recent, it should refuse to work with the 4431R-Z. Almost all english-language 4431R-Zs had chinese market firmware hacked to use english. The NVR still sees them as a chinese market camera. There was firmware available from the first post in this thread Dahua Firmware Mod Kit + Modded Dahua Firmware that was different. Instead of chinese market firmware hacked to speak english, it was international market firmware hacked to load into a chinese market camera, which made the camera acceptable to the NVR. From a little poking around, it looks like this firmware download isn't accessible any more. In its day (at least 6 years ago) the chinese market 4431 line had a bunch of very good cameras available at bargain prices, which is what likely led Dahua to change the NVRs to actively reject them. Since then they have been far overshadowed in low light performance by the 5442 series, and I have retired all but one of my 4431s. Andy (EmpireTech) has a couple of sub-$100 cameras that I would guess are at least as good, performance-wise, as the 4431s, and in my view replacing the 4431 with one of them would be worth it to avoid the hassle, even though you have a perfectly good camera sitting there. But also in my view, it's worth it to go up to the 54IR series for its clearly better low light performance.
 
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Yes mate that will most proberbly be the problem it did come from China as you say through AliExpress.
Although 3 of the others did aswell and they are working so it's just abit of bad look with this particular one I guess.
I will look at these other one's you mention.
Thanks
 
Missed the model #, but yeah

Still, if the other 3 work... I've seen older model cameras take an IP from the NVR PoE port and when plugging them into a different port, try and maintain their old port assignment, thus creating an IP conflict.
 
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