Blueiris NVR conundrum
- Thread starter Moley8
- Start date
bigredfish
Known around here
Other than using ancient old fashioned MD, I can’t even fathom how your get anywhere near that many false alerts? I can’t even force it to do that on purpose..?
I truly don’t recall the last “false alert” I got
I’d love to see that work. If you can skim through 1000 false alerts in 15 min, I may buy it.
bigredfish
Known around here
You may have a network issue.
How are you connecting to the NVR from your phone? Local IP/wifi or P2P or VPN?
UI3 with the fast forward thumbnails. Can reject a false alert in 2 to 4 seconds, with no mouse clicking. I don't claim to have 100% accuracy, but darn close to it.
bigredfish
Known around here
Cool if you have 1000 false alerts I guess. It determines that by? looking at the image and seeing nothing in it? 
if you're getting that many false alerts from IVS you could use some tuning!
if you're getting that many false alerts from IVS you could use some tuning!
bigredfish
Known around here
This thread got me to thinking, what do you BI guys consider a False Alert?
For me using an NVR and Dahua late model cameras:
1- Using old fashioned legacy MD, there are NO FALSE ALERTS, ZERO .... I have told the camera/NVR to alert me on EVERYTHING that moves. Thats what I get.
I think but havent tested, that IVS with NO filters would do the same?
2- Using AI/IVS, I filter for say Humans and Vehicles only. ANYTHING NOT a Human or Vehicle that produces an alert is essentially a False Alert
I use this method on 95% of my cameras and I truly am surprised when and if I EVER get a false alert
Bugs, Rain, Tree branch shadows, Sun, Lightning, Refrigerators, etc... I just dont get alerts from those. MAYBE 1-2 per MONTH from 25 cameras I watch each day
So how do you validate a "False Alert" with BI?
For me with an NVR, Two ways but essentially the same
1- I get an Alert in the App or Email or both (on some cameras I do set for both), with a snapshot.
The snapshot, in theory, shows me the culprit that caused the alert, right?
So here's a sample clip:
Lots of IVS (Human and Vehicle) on this camera today. Lets say 300
Using the NVR AI search filtering IVS events, I can visually see each thumb and see the culprit in the thumb that set off the alert.
But the last example alert I show, the snapshot doesnt show anything? False Alert? Nope
...Just a split second too slow to snap the photo on a far away IVS rule
View attachment Recording 2024-11-01 204747.mp4
And Using SmartPSS instead, I also see an Alert hash mark, so by playing that same clip, I see it was indeed a VALID alert.
The same holds true on the DMSS App and the NVR regular search timeline.
View attachment Screen Recording 2024-11-01 211713.mp4
For me using an NVR and Dahua late model cameras:
1- Using old fashioned legacy MD, there are NO FALSE ALERTS, ZERO .... I have told the camera/NVR to alert me on EVERYTHING that moves. Thats what I get.
I think but havent tested, that IVS with NO filters would do the same?
2- Using AI/IVS, I filter for say Humans and Vehicles only. ANYTHING NOT a Human or Vehicle that produces an alert is essentially a False Alert
I use this method on 95% of my cameras and I truly am surprised when and if I EVER get a false alert
Bugs, Rain, Tree branch shadows, Sun, Lightning, Refrigerators, etc... I just dont get alerts from those. MAYBE 1-2 per MONTH from 25 cameras I watch each day
So how do you validate a "False Alert" with BI?
For me with an NVR, Two ways but essentially the same
1- I get an Alert in the App or Email or both (on some cameras I do set for both), with a snapshot.
The snapshot, in theory, shows me the culprit that caused the alert, right?
So here's a sample clip:
Lots of IVS (Human and Vehicle) on this camera today. Lets say 300
Using the NVR AI search filtering IVS events, I can visually see each thumb and see the culprit in the thumb that set off the alert.
But the last example alert I show, the snapshot doesnt show anything? False Alert? Nope
...Just a split second too slow to snap the photo on a far away IVS rule
View attachment Recording 2024-11-01 204747.mp4
And Using SmartPSS instead, I also see an Alert hash mark, so by playing that same clip, I see it was indeed a VALID alert.
The same holds true on the DMSS App and the NVR regular search timeline.
View attachment Screen Recording 2024-11-01 211713.mp4
Last edited:
For me an IVS false alert is almost always caused by moving tree limbs or shadows. Occasionally, there's an IVS trigger that happens for no apparent reason, but they are infrequent enough that I just chalk it up to something random. I just tell it like it is with BI and NVR. NVR is easy to set up, rock-solid reliable, and a pain for viewing triggers. If I used the human/vehicle filters I expect most of the false alerts would go away, but a primary purpose of the system for me is to detect animals. BI is a pain in the rear to set up, and has a lot of needless to me complexity that I'm sure others relish. It shines for viewing triggers. For me its reliability has been less than rock solid, while others have had a difference experience. BI is my go-to choice for viewing triggers. For live viewing NVR+smartPSS works better.
The S3 camera is pretty good at not having false triggers when the wind isn't howling, but when the trees and bushes start dancing it sees a lot of nonexistent animals.
End result: Both sides are mad at me!
The S3 camera is pretty good at not having false triggers when the wind isn't howling, but when the trees and bushes start dancing it sees a lot of nonexistent animals.
End result: Both sides are mad at me!
bigredfish
Known around here
Not at all 
I’m truly trying to narrow down what I believe are less than informed declarations about current NVRs AND at the same time trying to figure out, on universal features, how BI does it different/better.
On your IVS troubles, of course that’s a camera issue, the new S3s detect critters pretty reliably for me.
Of course having the camera properly configured for the scene can make all the difference. We gotta get you fixed up!
My VF 5442 S3s and Z4 5442 are VERY good capturing critters using IVS with the critter filter. Possum, cats, coons, bunnies I get hits for most every night.
Even very small ones.....
View attachment FROGLET-Home_ch8_20240703050741_20240703050817.mp4
View attachment Home_ch8_20241101045105_20241101045128.mp4
I’m truly trying to narrow down what I believe are less than informed declarations about current NVRs AND at the same time trying to figure out, on universal features, how BI does it different/better.
On your IVS troubles, of course that’s a camera issue, the new S3s detect critters pretty reliably for me.
Of course having the camera properly configured for the scene can make all the difference. We gotta get you fixed up!
My VF 5442 S3s and Z4 5442 are VERY good capturing critters using IVS with the critter filter. Possum, cats, coons, bunnies I get hits for most every night.
Even very small ones.....
View attachment FROGLET-Home_ch8_20240703050741_20240703050817.mp4
View attachment Home_ch8_20241101045105_20241101045128.mp4
bigredfish
Known around here
Communication mixup. My S3 detects animals very reliably, and when the wind isn't blowing the false alert rate is acceptably low. I'm complaining about the false alerts when the wind is blowing and it sees bushes and tree branches as animals.