Delay in display

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veldthui
Posts: 23
Joined: Tue Jun 18, 2019 5:19 pm

Delay in display

Post by veldthui »

I am trying out a new server with a Gfx card in it. I have two cameras set up and both working fine. I have the AI software doing the confirmation.
Then yesterday the camera doing outside seemed to be lagging behind. It was displaying the ident box in the shape of the car or person as they went by but the actual car or person was actually 5 seconds behind where BI suggested they was.
Today it is back working again with no changes and the display is exactly over the identified item.

I read up and saw items about iFrames so went to check that. My Reolink cameras do not have them as such and my latest has 1x or 2x, my older one has 1x, 2x,3x,4x. I put them both at 1x but it didn't seem to make any difference. I have 4 seconds pre to make sure I get them.

I also can't get sound to work on my newer camera. The older one works perfectly. The newer one worked for about 6 hours and now doesn't do the sound anymore. I am at a loss as to why.
CPU is at 0 to 6%, GPU gets up to 7% which is as high as I have seen it. Have 128GB of memory, 2 x CPU with 10 cores/20 threads.
Last edited by veldthui on Mon Aug 19, 2024 12:23 am, edited 1 time in total.
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TimG
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Re: Delay in display

Post by TimG »

Do you have mainstream and substream with the same FPS and Iframe from the camera ? BI5 shows you what it is getting in Status/Cameras.
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veldthui
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Joined: Tue Jun 18, 2019 5:19 pm

Re: Delay in display

Post by veldthui »

The reolink does not appear to have an iframe setting as such as I mentioned above. Not sure if the main and sub streams are the same. I doubt if they are.
I have not changed anything and the camera has once again gone from displaying exactly the correct area and time to being 7 seconds delayed from were BI thinks the car is. Yesterday it was okay. I will check the fps of each when I get back home.
veldthui
Posts: 23
Joined: Tue Jun 18, 2019 5:19 pm

Re: Delay in display

Post by veldthui »

Okay have checked the camera and sub was at 10fps and main was at 25fps. Tried to up the sub to 25fps but it only goes up to 15fps. Tried them to lower the main to 15fps which it shows but it will not come off 25fps.

However after the change it is once again displaying the location of the detection and now the sound works again. This is very strange.
veldthui
Posts: 23
Joined: Tue Jun 18, 2019 5:19 pm

Re: Delay in display

Post by veldthui »

And then it went back to being way out again and no sound.

I finally managed to get both streams set for 15fps but had to do it through the app. The web interface would not allow me to change the main channel. The difference now is about 3 seconds which I can live with if it stays like that.
veldthui
Posts: 23
Joined: Tue Jun 18, 2019 5:19 pm

Re: Delay in display

Post by veldthui »

Really getting strange now. One moment the camera is in sync with the detection and with no changes at all is at least 6 seconds behind the detection. The AI is getting the right spot and zooms in perfectly. It is just the playback that is messed up so badly the person or car is actually gone in the playback.
veldthui
Posts: 23
Joined: Tue Jun 18, 2019 5:19 pm

Re: Delay in display

Post by veldthui »

It appears that one camera can stay in sync for not quite 24 hours and then gets about 8 seconds behind. Have emailed support but no reply as yet from them. Reseting camera every 24 hours at present but should not have to.
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Pogo
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Re: Delay in display

Post by Pogo »

With so little to go by...

First, make absolutely certain everything is referencing the same time server and that times and dates are correct among all devices. This is critical and often overlooked. Different time servers with different sync schedules can cause problems, even between a camera and its client software, let alone a server handling multiple devices.

Which Reolink cameras? How are they configured in Blue Iris? (Screenshots would be useful.)

What version of BI and what iteration of AI?

Reolink's convention is a 1x I-frame setting is an I-frame every second. 2x is every 2 seconds and so on. A 1 second I-frame is the norm, but more and more high res/hi bit rate cameras are expanding to 2 second I-frames for main streams. (This will appear as an I-frame of .5 in the BI status window.)

Different frame rates and I-frame settings between the main and sub streams should not make any significant difference beyond how they actually affect the live streams, recording quality and storage considerations. They should have no bearing on actual time sync, triggering or AI performance in an otherwise properly configured system.

Exactly what type of build is the system and how does the graphics card fit into the mix? Dual Xeons? The specs provided would seem to be more than adequate to overcome an even less than optimally configured 2 camera setup.

Answers to the above will be useful in attempting to provide further assistance.
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