****Something you may not know and is demonstrated here, there is a difference in image settings between having IVS OFF and ON
Make sure you are making your settings with IVS enabled and know that if you disable IVS, your exposure and other settings will be changed by the camera without your input
This thread explains it and humbled me as I wasn't aware and learned something new. Thanks to
@Zoltán Szabó @laurscr and
@wittaj for bringing this to my attention.
I'm betting there are others who don't know this.
I don't find it useful, frankly I think its dumb and can easily lead to unnecessary images issues
It does this in both B&W/IR and Color modes. Even more dramatic in B&W
Hi Everyone,
I have several IPC-HDW5442TM-AS cameras. All of them have been running the latest Smart IR firmware by EmpireTechAndy:
V2.840.15OG00D.0.R.220818
On one of them – an older HDW5442TM-AS model – I decided to switch to the newest official Dahua firmware
(hoping the updated IVS algorithm would reduce false alarms):
General_IPC-HX5XXX-Volt_MultiLang_PN_Stream3_V2.840.0000000.30.R.250227
The upgrade completed successfully and I fully reconfigured the camera manually (no config import).
The Algorithm Version changed from 1.0.7 →...
Check out this video. The first 15 seconds are with my settings and IVS enabled. Then I turn IVS OFF. Can you see what it does to the image?
You will want this to be full screen to really see the noise introduced.
IVS ON using my settings
View attachment 233398
And the settings the camera chose when I turned IVS OFF
View attachment 233399
View attachment 233397