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Dahua switching back to SXVGA

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Hi guys,

 

I have a Dahua IPC-HF3500 camera and it keeps switching back to SVGA quality, even when I change it to 3MP/5MP. It worked for the first few weeks but then it changed to this quality which is awful.

 

I did install NVR software on another computer, but have closed down the software on all clients and accessed it via a web browser but it switches after 30 seconds or so when I save the settings for 3MP / 5MP.

 

Appreciate your help

 

Jack

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Hello there Tom,

 

Thanks for this. If I was to use 5MP, what would the best settings be?

 

And any idea why this is happening?

 

Thanks

 

Jack

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Hello there Tom,

 

Thanks for this. If I was to use 5MP, what would the best settings be?

 

And any idea why this is happening?

 

Thanks

 

Jack

 

 

 

Hi Jack

 

the dahua is set by FPS so to use 5mp you cant go above 7fps sounds like you have your camera set to 25-30fps sub stream is set best at cif

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Hello there Tom, thanks for your reply.

 

I switched it back to some 5MP settings two days ago and randomly (didn't touch anything) today it changed back to the SXGA quality.

 

Here's the settings I have set it at and it is now switching back after a few seconds.

 

Cheers

 

Jack

dahua.png.4f06a4929719648e4bd35f6a43b1869c.png

dahua2.png.2d88124f8983ecb2c50ede2cc1cbe444.png

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Hi guys, thanks for your help. Still no solution found, but here is what happens immediately after I change to 5 MP.

 

Log:

 

 

Detailed Information

 

Time: 2013-06-01 17:51:51

 

User Name: admin

 

Type: Save Configuration

 

Name: Encode

 

Content: Frame rate(FPS) : 8->15

I Frame Interval : 16->30

Resolution : 2048x1536->SXGA

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So it seems the camera adapts to the max it can. For instance, you want 15fps, it lowers the resolution.

 

One simple thing to check: change the settings, save it, go into another page of the settings and come back to encode. Did the settings change back?

If yes, you are pushing the encoder over it's limits.

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to use 5mp you cant go above 7fps sounds like you have your camera set to 25-30fps

 

 

Content: Frame rate(FPS) : 8->15

 

 

 

set cam to 5fps and it should stay.

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to use 5mp you cant go above 7fps sounds like you have your camera set to 25-30fps

 

 

Content: Frame rate(FPS) : 8->15

 

 

 

set cam to 5fps and it should stay.

 

Hello Tom, thanks for your continued help, appreciate it.

 

I changed it to 5fps, went to SXGA again and this is what the log said:

 

Detailed Information

Time:2013-06-01 21:11:15

User Name: admin

Type: Save Configuration

Name:Encode

Content: AudioEnable : Open->Close

Bit rate : 224->2048

Frame rate(FPS) : 8->15

I Frame Interval : 16->30

Image Quality : Better->Good

Resolution : CIF->D1

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What do you use to setup the cameras?

 

Browser? Which one?

 

Hi there Dexter, many thanks for your reply.

 

I have been using Chrome, however tried using Internet Explorer and the same thing. I have an IPC-HDB3300 and changed it to 3MP and it is switching back to 1080 after a few seconds as well :S

 

Any help would be appreciated

 

Cheers

 

Jack

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I had that problem too. Ask from dahua the latest firmware and you should be able to get 5 megapixel video at 8 fps, at least that's how i solved my problem.

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I had that problem too. Ask from dahua the latest firmware and you should be able to get 5 megapixel video at 8 fps, at least that's how i solved my problem.

 

Hello there cctv, many thanks for your help!

 

Would you have any idea where I can get the firmware for IPC-HF3500? I looked at the support section on the Dahua website but they are saying that they don't provide support for firmware downloads.

 

Many thanks

 

Jack

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Hi guys,

 

So I've downloaded and uploaded the latest firmware to the camera, still switching from 5MP to 3MP sometimes, then back to SXGA.

 

I was wondering if it could be anything to do with the network cable being wired incorrectly? Could it not be able to cope with the 5MP bandwidth and is instead lowering the resolution?

 

Many thanks!

 

Jack

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You could test that by isolating it, if you have the gear.

 

Connect a decent laptop directly to the camera using a relatively short cable and an external 12Vdc supply, and that would give you a dedicated 100Mb connection without anything else running.

 

It's starting to sound like you've got a bad camera...

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It's starting to sound like you've got a bad camera...

 

I don't like them periods at the end... I will give your suggestions a go - many thanks!

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