ZoneMinder Forums

Hi all, is there a way to set up alarm notification for specific zones of a monitor only. I currently have email notification set up for a monitor, but I would like to add a zone that will trigger recording of an event, but not send me an email (but I still want to receive emails for a different ...

It really comes down to the size and quality of the incoming stream: video size, frame rate, color or B&W, Mbps of the compressed stream.

It's going to be specific to each camera. In my experience, analysis via ZM doesn't actually take a lot of CPU, most of CPU is taken by FFMPEG for image capture. I also was looking to offset analysis to the camera CPU, but considered the fact that I'd need to write scripts to do this and then ...

google is your friend:

https://wiki.zoneminder.com/How_to_use_ ... on_with_ZM

You could have your camera do the motion detection (if it supports it). Then use a script to check if camera is in alarm state every 1-2 seconds, if it's in alarm state, then use zmtrigger to trigger alarm in ZM and start recording, stop recording once alarm state ends. I saw a ZM wiki how-to on ...

You shouldn't. ZM marks the events that were emailed in the database.

Instead of "now" try "-1 hour".

This will match all events older than 2 weeks:

I'm still dropping frames as well. It consistently drops at least one frame after alarm is triggered. However, during some alarms it will drop more frames during the alarm, while during other alarms it doesn't (except for the first alarm frame). It's inconsistent as far as I can see. I was able to ...

Not sure if exact estimate is possible. But I just setup a small system - got a Pentium (N3700) NUC, 8GB of RAM, 2TB HDD. I have 2 Dahua cameras hooked up, capturing grayscale images @1080P @ 10fps, via FFMPEG (MJPEG quality sucks on Dahuas). The load on the system during the day is about 0.8-0.9 ...

Ok, I think I finally got this under control. It was the DB tuning after all. I've added a few lines recommended by @knnniggett here: https://forums.zoneminder.com/viewtopic.php?t=14664 I'm not sure which one of the lines did it (or combination thereof), but I'm not dropping frames during alarms ...

We will have to look into it. Other than the fact that one would expect the images to appear immediately, can you go through all the buttons on that screen a describe any difference between what you expected to happen versus what actually happened? I have the same issue with ZM 1.29 on Ubuntu 16.04 ...

Ok, nevermind. Used wrong command. Looks like everything is OK with my /dev/shm, and I'm not running out of space. df -h Filesystem Size Used Avail Use% Mounted on udev 3.9G 0 3.9G 0% /dev tmpfs 791M 9.0M 782M 2% /run /dev/sda2 1.8T 12G 1.7T 1% / tmpfs 3.9G 135M 3.8G 4% /dev/shm tmpfs 5.0M 0 5.0M 0 ...

Thanks bbunge. I did a clean install of ZM on clean MariaDB, so I don't think I need to move anything around. I've moved PATH_SWAP to /dev/shm. No change in behavior, still dropping. I also played around with resolution. It seems to have some, but very little effect. Increasing resolution does cause ...

I played around with "Analysis FPS" I originally had it set to 8, but once I removed it (blank now), this seems to have improved things a bit. When I now force an alarm there are no frames dropped (maybe a few/negligible). However, for non-forced event it still drops 1/2 of the frames during the ...