ZoneMinder Forums

The first step would be to get the camera working. Once the camera is working you can start looking at zoneminder, however since zoneminder relies on the kernel to provide a driver for the camera there is no use messing with zoneminder until the camera works with for example VLC. (VLC can play video ...

As for the purge I think the solution is to purge more events at a time.

My guess is that most users install the version that is available in their distribution, and they are using a "stable" version of the distro where packages only get bug fixes.

What kind of motion detection are you using? "no limitation on fps" is probably your main issue, for each frame zoneminder will perform motion detection (i.e. compare pixel by pixel with previous images). With 30 fps from 10 cameras this means there are 300 image comparisons performed each second ...

Using chmod on the file won't help since it will be overwritten when the next file is saved. As for the problem with ZM reading the file while it's written I think the only way is to upload the file using a temporary name and then rename it when finished. The problem of course is that the camera ...

My problem is that at one setting I get like 10 false positives an hour, changing the percentage 5% instead gives me zero events... One big problem is that the pixel level change is the same no matter the initial level. Pixel changing from 2 to 12 is a change of 10, but also a change from 200 to 210 ...

Fine tuning motion detection in Zoneminder is IMO extremely hard. One feature I would love is to be able to make a recording and then perform motion detection on the recorded images. That way it would be possible to fine tune the parameters. Today you can (as far as I know) only get statistics for ...

What are the permissions for the file?

Usually normal users don't have read access to files under /root, and zm is usually run as the web server user (www-data in Debian).

IMO it's a bit like comparing a taxi with owning your own car.

Or comparing a restaurant with having a kitchen of your own.

There are no shortcuts to motion detection but comparing images. And comparing images is CPU demanding. But CPUs today are more powerful than a few years ago. What might lower zoneminders CPU requirements would be to store images as raw bitmaps instead of JPEG, but that would on the other hand ...

My first guess would be that you may be using a build without support for remote cameras. But why there would be such a build I can not figure out.

It is probably mostly a matter of differences in what is considered to be "video" and "video data".

From what I understand: image analysis in ZM works with JPEG images, events are stored as JPEG images, event playback makes a video stream from those JPEG images.

As I wrote before: If/when ZM is rewritten to record video, recording audio will most likely come "at the same price".

But today ZM does not record video, ZM saves JPEG images.

I guess the major problem with audio recording is that ZM in its current state does not record video streams. While ZM may read video streams, it still analyzes and records them as JPEG images. This means it will be very hard to synchronize any recorded audio with the playback of those stills. If ...

Isn't that what Mocord does?