Motion detection on substream without recording

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Johnny1337
Posts: 14
Joined: Tue Oct 15, 2019 11:22 am

Motion detection on substream without recording

Post by Johnny1337 » Sun Aug 23, 2020 7:56 am

Many cameras have both a main stream and a sub stream. I think it would be a good feature to do motion detection on the substream and then record only the mainstream.

I dont know if it is possible to make it but I think it would save both cpu and disk space.

Paranoid
Posts: 129
Joined: Thu Feb 05, 2009 10:40 pm

Re: Motion detection on substream without recording

Post by Paranoid » Sun Jan 17, 2021 12:02 am

You might already be able to do that.
Set up to 2 monitors, one for the sub stream and one for the main.
The sub stream detects the motion and triggers the main one to record.

smokinjoe
Posts: 27
Joined: Wed Feb 03, 2021 12:45 am

Re: Motion detection on substream without recording

Post by smokinjoe » Thu Feb 04, 2021 11:52 am

Substreams can be so small why bother? If you don't want them hogging disk space I would make a zfs dataset for just the 640x480 substreams and make it so that it gets to your 80% number quicker, i.e. give that dataset only 5gb and it will auto clean. use your other datasets for your other cameras/events.

I am happy with Zoneminder on FreeNAS as a plugin, on 11.3-U5 it took me less than 5 minutes to have it working almost 100% perfect.

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