nothing gets captured

[aag]

Hello, newbie here. I managed to set up ZM with a Hikvision IP camera on an Ubuntu virtual machine (hosted on a Win server). Streaming works, no major errors are thrown in the logs, and yet I don't get anything captured. I am certain that I am doing some trivial error, but I don't know what. Might you be able to help?

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[aag]

Screenshot 2024-07-25 212216.png (237.9 KiB) Viewed 2360 times

[aag]

Update. I seem to have solved the issue (perhaps) by reducing the alarm frame blending to 3.125% and the Min/Max Alarmed area to 5%. Let's hope for the best...

[burger]

The min/max area you had at 10% was probably too high.
See: https://wiki.zoneminder.com/Dummies_Guide#Example_Zone (note that this example is for a low res stream).

Also, you are modecting on a high resolution image. You may want to consider the following:
https://wiki.zoneminder.com/Dummies_Gui ... Zoneminder

[aag]

Thank you! But now I am getting too many false-positives. I am playing around with adding many different zones in order to find out where the positives come from. Maybe it's good to set a max limit to the percentage of alarmed pixels, so that sudden changes to the whole pic (e.g. the camera switching on IR lights at night) won't trigger.

[burger]

Right, you are learning first hand the difficulty of tuning zones, and I don't have an easy answer for you. Some false alarms can be avoided by raising the min alarmed area (for me pixels is easier to tune than percent), but it's a rabbit hole. I find ZMES and email alerts works well at the expense of more CPU (so I only use it on certain monitors).

There's been a bit written about tuning zones on the forums, so search and that may help.