Some Dahua Camera settings don't persist after reboot

[Buttan Butt]

Hi there! I post this information here in case someone else is experiencing the same problem. Who knows, with a little bit of luck maybe someone can suggest a solution.

I prefer to set encoding for both the main strean AND the substream to H.265 and and I want to have the Iframe interval set to the same as the frame rate (25).
Like this:


It works well to set the wanted values and they are effective immediately.

Unfortunately the cameras reverts to the old values (for the sub stream only) every time it's rebooting. Like this:



It's a bit annoying to having to repeatedly having to set the same values over and over.

It occurs for 2 of my older camera models

• IPC-HDW4231EM-AS
• IPC-HDW5231R-Z

Installed version is V2.800.0000016.0.R, Build Date: 2020-06-05


Is this a known problem or am I doing something wrong?

Cheers!

 

[wittaj]

It is a problem with some cameras to not hold a setting after a reboot.

I also have one that will revert the bitrate to a lower number.

Nothing that I have found we can do other than check it after a reboot or setup a task scheduler to send an API to change it periodically.

 

[bigredfish]

I’ve seen this when making changes to the camera settings via the NVR instead of directly on the camera. One of the reasons I recommend making all changes on the camera.

If using a Dahua NVR, reset it to factory, only make recording schedule changes on it, and do everything else on the camera.

 

[Buttan Butt]

It is a problem with some cameras to not hold a setting after a reboot.

I also have one that will revert the bitrate to a lower number.

Nothing that I have found we can do other than check it after a reboot or setup a task scheduler to send an API to change it periodically.

Thanks! I'll probably set up a cron task for that then.

I’ve seen this when making changes to the camera settings via the NVR instead of directly on the camera. One of the reasons I recommend making all changes on the camera.

If using a Dahua NVR, reset it to factory, only make recording schedule changes on it, and do everything else on the camera.

Thanks! No NVR here. I'm using Blue Iris so all changes are made on the cameras.

 

[Buttan Butt]

After studying the DAHUA IPC HTTP API, this API call will do the trick:

http://CAMERA-IP/cgi-bin/configManager.cgi?action=setConfig&Encode[0].ExtraFormat[0].Video.Compression=H.265&Encode[0].ExtraFormat[0].Video.BitRate=512&Encode[0].ExtraFormat[0].Video.FPS=25&Encode[0].ExtraFormat[0].Video.GOP=25

Cheers!

 

[quade]

If you have a Dahua NVR then this will be the issue
If you goto Settings/Camera/CameraList - at the top of the page you will see H.265 Auto Switch - this needs to be turned off

 

[tigerwillow1]

I had a weird thing happen a few days ago. I was having problems accessing one camera's UI so went into the NVR's web interface instead. I enabled substream2 on the camera in question. This worked, and when finished, substream2 got turned off on 10 other cameras.

 

[bigredfish]

That was @wittaj messing with ya. Shouldnt port forward

Seriously has anything changed in your system? Perhaps then NVR is shutting down streams because its Max'd out on bandwidth? That is a documented thing...

 

[CCTVThomas]

If you have a Dahua NVR then this will be the issue
If you goto Settings/Camera/CameraList - at the top of the page you will see H.265 Auto Switch - this needs to be turned off

Thank you, this fixed the same issue for me