Dahua IP camera DH-IPC-HFW2230SP can't snapshot

[vsw]

Hi,

i bought DH-IPC-HFW2230SP. Streams works but snapshot does not.

Have read many forums but can't solve problem.

Have tried:

http://admin:number2020@192.168.0.122/cgi-bin/snapshot.cgi?channel=1

http://admin:number2020@192.168.0.122/cgi-bin/snapshot.cgi?1

http://admin:number2020@192.168.0.122/cgi-bin/snapshot.cgi?chn=1

http://192.168.0.122/cgi-bin/snapshot.cgi?chn=1&u=admin&p=number2020

with curl/wget and always Unauthorized 401 and then server error 500.

Please help.

Best regards, Viktor.

 

[TonyR]

The first 3 work OK for my Amcrest IP2M-841, a Dahua-rebrand, so I think they're in the correct format with the username and password at the beginning.

• If you open a browser and put into its URL the cam's IP and hit <enter> does it bring up its embedded webGUI?
• With that same browser if you put into its URL any one of the first 3 URL's and hit <enter> do you get a snapshot in the browser?

 

[wittaj]

Let's also question the obvious - Is there an SD card in the camera?

 

[vsw]

Let's also question the obvious - Is there an SD card in the camera?

SD as option but not installed.

 

[wittaj]

SD card needs to be installed as that is where the snapshots are saved!

 

[vsw]

The first 3 work OK for my Amcrest IP2M-841, a Dahua-rebrand, so I think they're in the correct format with the username and password at the beginning.

• If you open a browser and put into its URL the cam's IP and hit <enter> does it bring up its embedded webGUI?
• With that same browser if you put into its URL any one of the first 3 URL's and hit <enter> do you get a snapshot in the browser?

I put mjpeg into browser and get stream:

http://admin:number2020@192.168.0.122/cgi-bin/mjpg/video.cgi?channel=1&subtype=1

If first 3 snapshot links above then browser waiting about 5 sec and 500 error. Inside there is 401 then 500.

 

[vsw]

SD card needs to be installed as that is where the snapshots are saved!

So snashot it is for saving on SD? I do not need it.
How i can get image from main stream? It is possible?

 

[vsw]

Hikvision can it

http://admin:number2020@192.168.0.120/ISAPI/Streaming/Channels/101/picture

But dahua?

 

[wittaj]

Yes the SD card is needed to record anything on the camera - motion alerts or snapshots.

Yes dahua has a substream in the camera. Log into the camera GUI and ensure you have the substream enabled.

 

[vsw]

Yes, substream is mjpeg and i using it for preview in browser img tag.

 

[vsw]

But substream is for downscaled image. I need full image.

 

[wittaj]

rtsp:/192.168.1.108:554/cam/realmonitor?channel=1&subtype=0

 

[vsw]

It is rtsp substream. I can't get image from browser url with it. Isn't it?

 

[vsw]

I need http response with jpg.

 

[vsw]

The first 3 work OK for my Amcrest IP2M-841, a Dahua-rebrand, so I think they're in the correct format with the username and password at the beginning.

• If you open a browser and put into its URL the cam's IP and hit <enter> does it bring up its embedded webGUI?
• With that same browser if you put into its URL any one of the first 3 URL's and hit <enter> do you get a snapshot in the browser?

And yes, without user/pass browser popup asks me enter it and same issue.

 

[wittaj]

Mainstream is subtype 0 and substream is 1. Try these

http://admin:number2020@192.168.0.122/cgi-bin/mjpg/video.cgi?channel=1&subtype=0

http://admin:number2020@192.168.0.122/cam/realmonitor?channel=1&subtype=0

rtsp:/192.168.1.108:554/cam/realmonitor?channel=1&subtype=0

 

[vsw]

Installed sd card. Format it inside camera web interface.

Have tried snapshot, same issue. And no images on sd card.

Found small snapshot button on top-right of live preview and it makes snapshot with png from browser. But it is javascript function.
How to do it with http url?

 

[vsw]

Mainstream is subtype 0 and substream is 1. Try these

http://admin:number2020@192.168.0.122/cgi-bin/mjpg/video.cgi?channel=1&subtype=0

http://admin:number2020@192.168.0.122/cam/realmonitor?channel=1&subtype=0

rtsp:/192.168.1.108:554/cam/realmonitor?channel=1&subtype=0

1. Empty responce. Cause mainstream is rtsp. Not http.

2. Not found. Cause mainstream is rtsp h265. Not http.

 

[vsw]

My setup. Mainstream is rtsp h265. Substream is http mjpg.
And i need jpg/png from mainstream.

 

[vsw]

Rtsp mainstream works with my DNN application through gstreamer.
Http substream works as preview in my nodejs/react application in browser.

But i need http snapshots. Many cameras can do it without any problems. But Dahua has issue.