Video loss problems?

[hurri10209]

I have tons of video loss (35 in the last 4hr), only during dark, worse in rain/snow. I have someone coming out to do a line certification, I doubt I have a cabling issue.
Hardware is listed below:
2- hikvision ds-2cd2t87g2p-lsu/sl
2- dahua sd5a825-her-ya on 60w injectors
1- Hikvision NVR DS-7716NI-M4/16P-4TB (listed as backend compatible with the color I and onvif compatible)

Network is dhcp, I don’t see any ip conflict when running arp -a half of my network is static.

cat 6, longest run approx 130’ these are self made cables but I pull/crimp wire all the time, again, I will have a line cert done just to rule that out but all day everything works fine, then dark hits and it’s game over. It’s been like this since install, couple weeks.

The nvr runs setup wizard after every reboot, if I just hit cancel everything seems to be where it should be.

I’ve tried h264 and h265, currently set cameras from nvr web inter face as follows:
Bit rate variable
video quality medium
Frame rate 20
Max bit rate 5000
Video encoding h265
H265+ off
I frame interval 50

I had frame rate and bit rate up higher, tried reducing around 5:00, didn’t seem to help at all. I do have footage loss ~10-30 seconds that doesn’t report as video loss, this seems to happen during an intrusion/trip wire event. None of the cameras are running IR (good ambient lighting), none of the cameras are running built-in lighting. Ptz’s have auto defog enabled.

If there’s any other information that might help solve this mystery before I get the line test done (they do pass with the continuity tester), please let me know. TIA.

 

[David]

I will have a line cert done just to rule that out but all day everything works fine, then dark hits and it’s game over. It’s been like this since install, couple weeks.

As this only happens at night I don't think you have a cat6 cabling problem.

Can you test from a monitor or TV connected direct to your NVR? If you can't do this, test from a pc connected to your network using an ethernet cable, wifi disabled. For now avoid testing remotely using cellular (4G / 5G) network?

The nvr runs setup wizard after every reboot, if I just hit cancel everything seems to be where it should be.

you should be able to disable this, is there a "do not show again" check box on the wizard screen?

Network is dhcp, I don’t see any ip conflict when running arp -a half of my network is static.

Are your static IP addresses outside the range of your DHCP server?

I have tons of video loss (35 in the last 4hr), only during dark, worse in rain/snow.

temporarily reduce your video resolution.

David

 

[hurri10209]

Thanks for the quick reply.

Can you test from a monitor or TV connected direct to your NVR? If you can't do this, test from a pc connected to your network using an ethernet cable, wifi disabled. For now avoid testing remotely using cellular (4G / 5G) ?

I’m not clear on what test you are referencing? I frequently log in from my work station to the nvr across the network, through a wired connection, getting to the nvr page isn’t a problem, remoting into the camera from the nvr was nearly impossible yesterday (when dark). Video is not steady while trying to setup intrusion lines and tripwires, appears for a few seconds the go away for 30 seconds. Firmwares are all up date, and I have factory reset the ptz’s (required after software update), I have not reset the panoramics.
The ptz controls are horrible from either nvr web interface or camera, extremely jumpy and sometimes send the camera into a non-stop spin.
when you say disable WiFi, non of this equiptment is connectives via WiFi what are you looking for?
I can disconnect the lan from the nvr so it is completely removed from my network and the outside world, then check the nvr for video loss errors.

Are your static IP addresses outside the range of your DHCP ?

I thought my work stations were set to static, the two that are on are dhcp, the others are off during the evening so I couldn’t confirm remotely, I’ve attached a picture of my ip addresses,I believe these leases are:
4 desktops wired
1 tablet wireless
2 printers wired
1 nvr wired
It would seem unlikely that a network configuration issue only appears when it gets dark. There is typically more leases bearing used and more traffic during the day light hours (office environment).

temporarily reduce your video resolution.

The panoramics have a fixed resolution of 5120x1440. Do I need to enable ultra hd?

Thank you for your help, the company I purchased the ptzs from were very helpful in answering my question during configuration, but the NVR is a different story.

 

[David]

Connect a monitor and mouse to your NVR and test live view / play back / line crossing / intrusion detection etc. If everything is ok at the NVR then we can look elsewhere. Sometimes little problems in different places can lead to bigger problems. Lets focus on the LAN and discount remote viewing for now.

when you say disable WiFi, non of this equiptment is connectives via WiFi what are you looking for?

on a laptop / desktop If the wifi interface is disabled there is no chance of switching from ethernet to wifi interface, this can complicate LAN problems. It is good that everything is wired.

I was talking about the DHCP server in your router, you should be able to see which assigned IPV4 addresses are static.

It would seem unlikely that a network configuration issue only appears when it gets dark.

I agree, we need a known good point to work from. Starting off with testing at the NVR with monitor / mouse sets the base line, if day / night viewing at the NVR is ok then the problem is elsewhere.

The panoramics have a fixed resolution of 5120x1440. Do I need to enable ultra hd?

I was thinking of temporarily reducing all cameras to 1920 x 1080 (HD). you may have to do this at the cameras web gui

What are your camera exposure settings for night use?

 

[hurri10209]

I have viewed from the nvr, the “video loss” error is recorded there. I also have black (missing video) in my timeline play back. The 2 panoramics are set to 24/7 record. It also will occasionally pixelate the recording at the nvr, sometimes green bocks other times just a blur.

I didn’t set up the router, I will get the log in credentials and see.

I still could not see how to adjust the resolution in the camera web gui, pictures of settings attached.
Thank you.

 

[David]

@hurri10209
which camera has the 1/12 exposure setting? seems very long, The NVR should read / write the settings from the Hikvision cameras, I'm not sure about the Dahua cameras, I wouldn't rely on setting the Dahua from the NVR. Use the web gui.

Which cameras have the day / night problem? could you post some images?

What are the NVR camera settings for the Dahuas?

 

[hurri10209]

The colorvu panoramic has the 1/12 exposure, , all the cameras are dropping out in the evening, worse when there is activity (rain, snow, motion).

I Have set all the dahua setting from the camera, also confirmed any settings made to hikvision were applied to the other end.

There really isn’t any images to post as it’s video loss. I’m posting some pics off all the offline alerts. Here’s some pics of the event alerts, and a pic of the timeline with black space in the timeline.

It seems like the ptzs have a run of signal loss, then it changes of to the panoramics, not sure that this is the normal trend but it was yesterday.

 

[David]

The colorvu panoramic has the 1/12 exposure

What name is this camera? Can you change the exposure to 1/250?

Why does the image settings page not show an image?

 

[hurri10209]

What name is this camera? Can you change the exposure to 1/250?

Why does the image settings page not show an image?

I can try to make the change, the video cuts in and out, I described difficulty setting trip wires because video pops up, then disappears. Happens to all the cameras, was happening when wired to a network switch without the nvr as well. I have had bad cable before, but it was cheaper cable from Amazon that was cca(didn’t realize when purchasing), so I’m hoping it’s not bad cabling.

 

[hurri10209]

Forgot to answer the camera name

hikvision ds-2cd2t87g2p-lsu/sl panoramic
dahua sd5a825-her-ya on 60w injectors ptz

 

[David]

Sorry I meant the names assigned to the cameras on the NVR. Could you post a picture of the camera overview page from the NVR web gui?

what is a cca cable? I thought this problem only happened in the dark? Is this at night time?

if it’s affecting all cameras It may be the NVR LAN cable.

 

[hurri10209]

Edit

Cca is copper coated aluminum

The video loss only occurs at night but the web gui video issue exists all the time
Assigned names are:
Rear pano
Front pano
Rear ptz
Front ptz

I reset the panoramics today so names have changed, camera01 was front pano, name changed after reset.

After I reset the cameras earlier today I can not log in to the camera directly, I’ll attach a picture of this too.(edit). The dahua web interface is no longer working, I don’t think I did any network changes while resetting the hikvision cameras. Might be resetting nvr and staring fresh.

The nvr seems to have a solid connection, the video loss is reported on the nvr, I believe this video loss error that is reported on the nvr would be there regardless of an internet connection.

 

[hurri10209]

***UPDATE***
I reset nvr, and the two hikvision cameras.

The nvr grabbed what I think is it’s correct dhcp, 192.168.1.64

The 1/250 exposure seems to function fine.

Video seems stable when viewing the image screen and event image.

Ptz control seems to be function well.

Finger crossed, Thank you for all the help and hopefully this is resolved.

I do have a question regarding line crossing, when I hit grab target it drops a line then I need to manipulate it (drag around and shrink it). Not sure if it’s just me but I sometimes struggle getting it to allow me to move, change direction (rotate) or adjust size. Any advice?

 

[hurri10209]

Another question…
When I go to play back and I try to smart search through the web gui, if I draw an intrusion line how do I search or apply that setting?

 

[hurri10209]

Nope, video still cuts out, I scaled my two ptzs back to 1080, will report back in the morning. Video loss is not for long periods, generally sub 1 minute.

 

[David]

Nope, video still cuts out, I scaled my two ptzs back to 1080, will report back in the morning. Video loss is not for long periods, generally sub 1 minute.

Morning, I’ll get back to you. For now can we test from the wired win10 pc with Wi-Fi disabled?

 

[David]

see my earlier post.

Lets focus on camera01 (front pano?) for now.

Check the NVR logs for any network connectivity problems. Look at the router logs as well for network outages, you may be able to show DHCP activity connecting to the NVR. The NVR should get the same IPv4 address.

CCA cable should be ok, how were the cables tested and were the rj45 plugs / sockets flexed during the tests? Can you post a link to the cable specs and RJ45 tester used?

Open a command prompt window and do a 1000 ping test from the pc to the router, then pc to NVR. post the results

ping /n 1000 <IPv4address>

Consider taking a camera down and connect to the NVR using a good quality ethernet patch cable.

Are you in the UK?

David

 

[hurri10209]

Good morning, I’m in the US, the testing has been through wired windows work station, it does not have WiFi, I am remoting into the office computer then connecting to the nvr/camera web interface(s).

I attached 3 pictures
Fastest was computer to router
Slowest was computer too google
Other was computer to NVR

The cable used is

BELDEN | 2413​

Data sheet

https://catalog.belden.com/techdata/EN/2413_techdata.pdf?_gl=1*161hul6*_ga*MTk1NTUwNjYyLjE2NzMxODA2ODU.*_ga_X6Q7YE8B3L*MTY3MzE4MDY4NS4xLjAuMTY3MzE4MDY4NS4wLjAuMA..

Cable test, I have a simple Klein VDV501-851, the cable qualifier (had the name wrong) that my telco people is is a fluke Dax-8000, this test for a variety of things but we focus on pairs, speed and noise.

The time I had bad cable was for 15 200’ runs for cat6, this was a used as HDMI over Ethernet. The manufacturer did refund the price and ultimately ran hatachi Video would pop up then disappear.

I will be back in the office tomorrow I can look at the NVR logs, I will work on getting the router login credentials (I didn’t set that up).

Once I have the line qualification done, I won’t have any questions about the cabeling. I’ll make a call Monday, I’ve had a few done only cost 75$, so it’s just not worth the unknown and all the extra trouble shooting.

I will add, it seemed he drops that continued after resetting nvr/camera had the nvr to record continuously on all channels (abnormal for my installation (currently but may change), I have the pan is at 24/7 and ptz on event (with triggers from panos and ptz). I didn’t see any more blank space in the timeline. I did also dumb down the resolution for the PTZ. I’ll gather the info and report back Monday, thanks again.

 

[David]

I can look at the NVR logs, I will work on getting the router login credentials

It is possible the router / NVR logs will not capture brief transient problems, some routers offer a debug mode for specific interfaces. I don't know about the NVR. If you export the logs post them here, add logs showing video loss events as well.

Ping results were as expected, no problem at the time of the test.

getting the network cables tested and certified will be well worth it.

I didn’t see any more blank space in the timeline. I did also dumb down the resolution for the PTZ. I’ll gather the info and report back Monday, thanks again.

That's why I like to drop the video resolution on all cameras and see if the problem goes away, then figure out why.
David

 

[hurri10209]

Edit, I didn’t see your reply until I grabbed these pictures, I’ll be back to work tomorrow, I will export logs then. Let me know if the pictures I grabbed are the logs you are looking for.



Ok, I dropped by the office, here’s a couple pics. I will have to look up a network connectivity log for the nvr, not sure where that is. But for now…

Much thanks.