Issues with modect

Discussions related to the 1.36.x series of ZoneMinder
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hornetster
Posts: 23
Joined: Mon Nov 01, 2010 10:00 am
Location: Elliott Heads, Qld, Oz

Issues with modect

Post by hornetster »

Have just setup an additional camera (Nextech QC3864 - pretty useless...), and trying to get motion detect to work.
Works OK for the initiall "All" area, but if I try and setup another area, doesn't seem to matter what I do, it will not detect.
Have tried to copy (mostly) the settings from the All area, but still no good. Have set to Fast, high/best, high, etc, but no good.
Where am I going wrong?
Thanks.
OpensuseTumbleweed/PLASMA
Ubuntu24.04
ZoneminderV1.36.33
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Andyrh
Posts: 300
Joined: Sat Oct 28, 2017 3:55 am

Re: Issues with modect

Post by Andyrh »

Likely it is the detection threshold. I changed to pixels instead of percent to gain tighter control.
My trick is to find a person sized object in the frame and draw a tight zone around it. The zone properties will tell me the pixel count. I delete the test zone and set the detection size to the same pixel count as the test box. Once that is done, I adjust up or down as needed, but those adjustments are usually small.

Does that help?
Andy
o||||o

Ubuntu 22.04
ZM 1.36.33
E5-1650-v4 Xeon
16 GB RAM
6 cameras -> 54 FPS modect
hornetster
Posts: 23
Joined: Mon Nov 01, 2010 10:00 am
Location: Elliott Heads, Qld, Oz

Re: Issues with modect

Post by hornetster »

Thanks Andy.
Think it is more the dodgy chinese camera, but will continue trying...
OpensuseTumbleweed/PLASMA
Ubuntu24.04
ZoneminderV1.36.33
bbunge
Posts: 2967
Joined: Mon Mar 26, 2012 11:40 am
Location: Pennsylvania

Re: Issues with modect

Post by bbunge »

Here is a good how to for motion detection: https://wiki.zoneminder.com/Understandi ... or_Dummies

One thing I've found is that the settings can be too sensitive and you will get a lot of worthless detection's. Fog, snow and rain can fill up the storage. But with Zoneminder even iffy cams can be made to work well!
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