Blue Iris - video blur issue

W

WannaTheater

Young grasshopper
Aug 18, 2018
48
19
Florida
Every once in a while, my alert clips show motion as blurred, i.e. if someone walks by a camera they are sharp, then there is a trail of blur. When this happens, a restart of Blue Iris seems to fix things. Any suggestions on what could be causing this?
 
Following. I noticed this on a couple of my recordings as well. Hasn’t been frequent enough that I’ve tried to dig into it. I’ll be curious to see what people think it could be.


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I take that back- Even a restart of Blue Iris is not correcting the problem. I will now be rebooting the cameras to see if it corrects things.

Cameras are Dahau DH-IPC-HDW2231R-ZS.

Settings in Blue Iris for one of the cameras:
Max Rate 400000 [25.00 fps]
Hardware accelerated decode: Default
GPU: Any

Setting on the corresponding camera:
Encode Mode: 264H
Smart Codec: Off
Resolution 1920x1080(1080p)
FPS 25
CBR
Bit Rate: 4096 Kb/S
I Frame Interval: 25

camera_blur.jpg
 
Set the encode to plain H264, not H264H.

I run my 2231 at 10FPS, VBR, 4096 max, and have no ghosting.

I just went in and looked at my 2231 and it is, indeed, set to H264H so that won't help.

Are you using hardware acceleration?
 
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What type of Cat cable are you running? Cheap cat5e can cause ghosting. After replacing my cheap cable with solid copper Cat5e, most of my ghosting problems have gone away. Also, if your running a switch, consider upgrading your cable from the switch to the computer with a quality cat6 or 7 solid copper cable. I can really see a improvement in video quality (BTW, I"m running 15 cameras)
 
Only occurs every once in awhile. Using cat5e solid- i make my own.
Rebooting cameras didnt help this time. I have been noticing some networking issues lately on other devices. Will keep investigating.
 
I had this exact same thing happening with my 2231 cameras. I did two things. First, I had i-frame interval at the default of double the FPS, so I changed it to match the FPS (which you already have). I also uninstalled/rolled back my video driver to an older one at the same time. All of my ghosting is gone.
 
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Haven't tried the video driver, but rebooted yesterday morning. Ran for about 30 hours without any trails. I got one about 1/2 hour ago. But nothing since... So intermittent.
 
As Mike pointed out earlier, looks like DNR blur to me. try dialing down or disabling noise reduction in the cam...
 
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pozzello said:
As Mike pointed out earlier, looks like DNR blur to me. try dialing down or disabling noise reduction in the cam...
Click to expand...
You can see that artifacts in other parts of the video as well which points to dnr. A good way to test this is to see if this blur is present on the SD card recording.
 
Try setting the "Max rate" a little higher, like to 27 FPS. This increases the size of some buffer in Blue Iris and reduces the chance that a frame will be dropped. When frames are dropped, you get video corruption. The trick is when nothing is moving you probably won't even notice a dropped frame because it wasn't going to change the scene much anyway, so they could be happening all the time and you wouldn't know.

There are diagnostic tools you can use to help determine if this is a network problem. Here is one which I created myself which allows you to rapidly ping multiple devices at once and see the response times on graphs: bp2008/pingtracer Just run this and enter the IP addresses of each of your cameras, comma separated, into the Host field. Then push the start button and increase the ping rate to 10 pings per second. Any unreliable network links should be revealed pretty quickly as they will have high latency, very spiky latency, or a significant number of dropped packets.
 
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So once today when I walked out the front door, the motion is captured on two cameras, and they both blurred. But I've walked out the front door several times today, and it only happened once. Where does one set DNR? On the Camera-> Settings -> 3D NR, and the "Grade" slider? Currently set at "ON' and grade in the middle.

Since this happened only once during the same lighting conditions, on two cameras, I am thinking it could be network. Or perhaps Windows 10 update. (I don't know exactly when this started, but I ran without issues for several months since the initial installation).

How does one set the Max FPS to 27? It is unavailable in the pull-down in blue iris. Also, one of the cameras the exhibited this behavior was at 30. The other was at 25. Will be checking out pingtracer.

I did read on another thread about when video displays "The Predator Effect," which really sums up what it looks like.
 
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WannaTheater said:
So once today when I walked out the front door, the motion is captured on two cameras, and they both blurred. But I've walked out the front door several times today, and it only happened once. Where does one set DNR? On the Camera-> Settings -> 3D NR, and the "Grade" slider? Currently set at "ON' and grade in the middle.

Since this happened only once during the same lighting conditions, on two cameras, I am thinking it could be network. Or perhaps Windows 10 update. (I don't know exactly when this started, but I ran without issues for several months since the initial installation).

I did read on another thread about when video displays "The Predator Effect," which really sums up what it looks like.
Click to expand...
Check the videos on the SD card... Or simultaneously record to PSS
 
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