[FIXED]Help Needed: Cameras keep disconnecting and reconnecting after Dahua NVR firmware update to V4 from V3.

wittaj said:
@Parley is one of the members I recall having to run more than one NVR for his high resolution cameras.
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Yes, I run 3 NVR's to handle my 20 cameras. I have 12 cameras at 8MP and 4 cameras at 4MP. The remaining 4 are my license plate cameras. They are either 2 or 4mp. The 8MP cameras definitely put a load on things. I use Hikvision IVMS-4200 on my home computer to monitor the 3 NVR's and it is stressed out. It will not last an hour before it starts lagging and I have to reboot it. Not a big deal as I do not sit at the computer watching the cameras all the time. The total reboot takes about 20 seconds. Next week I am going to add to the stress. Andy has shipped me a 12MP camera that will replace one of my 4MP cameras. I will run it at 12MP initially and then at 8MP and see what the difference is. My main computer monitor is only 4K, so I am not sure running at 12MP will make a difference over the 8MP setting to the naked eye. The monitors on my NVR's have even less resolution.

Bottom line is, if you buy an NVR check out the specifications very closely. Here is the link to one of my NVR's and look at the specifications, especially the decoding. DS-7616NI-M2/16P - Ultra Series - Hikvision
 
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I wonder if both fisheye cams running is the problem?. NVR specs 1 dewarping
 
And wasnt the NVR running fine BEFORE the FW update?
 
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bigredfish said:
I'm running one 4K cam at 10240 and one at 16Mbs plus 6 4MP cams at 10240 all at 30fps - same NVR except 16P vs 8P
The NVR should handle it

Max 320 Mbps incoming bandwidth
Up to 24MP resolution for live view and playback
> 1-channel fisheye dewarping (AI by NVR)
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Are you saying the NVR5216-8P-4KS2E (October 2019 build) can only handle one(1) 12MP, fisheye camera(…plus the other 4 4K)?
 
The specs say it can only dewarp one at a time….? That’s a view thing not a bandwidth thing ..

You should try the web interface to your NVR. Open a browser (IE or maybe chrome) , and assuming it hasn’t been changed, type in 192.168.1.108 to get to the web UI
 
The decoding on you NVR is 16 channels@1080P (30)fps. That is equal to 32MP. Your two fisheye cameras at 12MP each equals 24 MP. Your four IPC-HDW5831R-ZE cameras have a total of 32 MP at 8 MP each. All total you are running at 56MP. I think you are over loading that NVR. I am not sure that dropping the FPS way down will solve the problem. I think there are other factors at play.


 
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Based on @Parley analysis, unplugging one won't bring the total MP down enough.

Try to downrez each camera to say 4MP and see if it gets stable.
 
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Pretty sure Decoding refers to the capacity to view or stream the cameras simultaneously/playback. Doesn’t affect recording.

Recording (Encoding) is I believe primarily dependent on incoming bandwidth, in this case 320 Mbps

The NVR was recording fine before the FW update.
 
Are you running H.265 on any of the cameras? Or Smart codec?
 
bigredfish said:
Pretty sure Decoding refers to the capacity to view or stream the cameras simultaneously/playback. Doesn’t affect recording.

Recording (Encoding) is I believe primarily dependent on incoming bandwidth, in this case 320 Mbps

The NVR was recording fine before the FW update.
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Do you think a factory reset on the nvr is worth the try?
 
At this point a factory reset is probably a good idea.

Most believe in this process for a firmware update

Factory reset 3 times
Firmware update
Factory reset 3 times
Set up system from scratch - do not import settings.
 
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Yes

Turn off H.265 use H.264H

Get to the web UI I referred to, under "Maintain"
V4NVRHome.jpg V4FactoryDefault.jpg

I would unplug the cameras first, assuming you havent changed passwords from initial setup, when the NVR reboots , and you intiate it by saying no to the nag screen for P2P, plug cameras back in one at a time. Cameras currently have the same master password you origianly set on the NVR. Recommend you use that same password again

Refer to this post
***PSA for those with a New DAHUA NVR with Built-in PoE switch

When you connect each camera back to the NVR, the first thing to do after they appear in the bottom pane, is to log into them and change from H.265 to H.264.H
Unfortunately the newer NVRs default to H.265 which sucks for various reasons. We can revisit later.
 
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