Very strange issue and need help please

Brandon1994

Brandon1994

n3wb
May 18, 2024
16
6
Mercer County PA
Hello,

I'm currently working with Amcrest & Blue Iris support, but wanted to see if anyone here has seen this issue. We have 4 Amcrest cameras, and when I have a vehicle go fast, I get these very odd artifacts on the video. People walking doesn't seem to affect it for some reason. Blue Iris has told me to disable Hardware Decoding, and I have tried that without luck and verified that I need to use direct-to-disk recording, which I was. I have an Ankee camera outside as well and will be doing a test today to see if the artifacts happen. My computer has the following specs

i7-6700
32GB RAM
8TB HDD
1050TI GPU
Running 8 cameras in total, all with substream enabled

It seems like it's anytime fast motion occurs resulting in the video being messed up.


 
What video encoding you are using on the camera stream? H.265 or H.264?
I could imagine that H.265 is causing these artefacts in movements.
 
That is typical of too low bitrate or the processor cannot keep up. It can happen if Noise Reduction is too high also or if using VBR or H265.

We have found that all the tiny dimensional aspects of gravel/blacktop really wreak havoc on the processing of the image.

And with it being amcrest, it is typically too high MP shoved on a sensor designed for a much lower MP, so the processor is underpowered to begin with.

And you notice it is mainly when it is close to the camera, so that is typically a camera processing issue.

Try:
H264
CBR
15 FPS
15 iframes
1/2000 shutter
25 NR
Max bitrate

If it still does it, then it simply can't keep up with all that pavement/gravel.

We see it here from time to time.
 
  • Like
Reactions: Fhantazm
wittaj said:
That is typical of too low bitrate or the processor cannot keep up. It can happen if Noise Reduction is too high also or if using VBR or H265.

We have found that all the tiny dimensional aspects of gravel/blacktop really wreak havoc on the processing of the image.

And with it being amcrest, it is typically too high MP shoved on a sensor designed for a much lower MP, so the processor is underpowered to begin with.

And you notice it is mainly when it is close to the camera, so that is typically a camera processing issue.

Try:
H264
CBR
15 FPS
15 iframes
1/2000 shutter
25 NR
Max bitrate

If it still does it, then it simply can't keep up with all that pavement/gravel.

We see it here from time to time.
Click to expand...
Well, I did a test with my Ankee and it's fine, so It must be an issue with the Amcrest. Unfortunately, I don't have the budget to replace the Amcrests since this is a Church and we don't have the funds currently. I will try your settings and see how it goes
 
Which model of Amcrest is it with the issue?
 
bigredfish said:
^^^
This

I think using a range makes it more visible as the camera attempts, with close fast objects, to adjust exposure and iris.

Not BI. I see it on Dahua cameras with a Dahua NVR as well.
Sometimes more noticeable than others but its always there on closer up and/or zoomed scenes

View attachment 217596 View attachment 217595

View attachment 217597

View attachment 217598
Click to expand...

Its there on most all Dahua/Amcrest (same) models as I mentioned, its the scene that makes it more or less visible
 
You must log in or register to reply here.
Top Bottom