what's the best way to store events in zoneminder ?

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spitzmann007
Posts: 13
Joined: Thu Feb 05, 2009 12:48 am

what's the best way to store events in zoneminder ?

Post by spitzmann007 »

I have done some experiences with events storage. I'm a newbee with jpeg and movie compression.

is mpeg-4 more compressible than just a lot of jpeg files in an event ?
what zoneminder's users usually do with event images ? Do they stay the events just as jpeg files or it's normal to convert to a movie in avi, mpeg and so on ?

This is the first part of my experiments:

First I set up my camera with 320x240 resolution. I changed the default value for ZM_JPEG_FILE_QUALITY from 70 to 100.
I also changed the function to modect and put an area to monitor movements.

I saw the files from the movements I did in front of the camera took an average of 77KB each jpeg file.
I also did the same with a quality of 50 and the files took 10KB in avg with the same resolution.

Now I'm going to try with different resolutions and jpeg qualities. I think it would help anybody who want to know how much space is required for an specific condition.
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cordel
Posts: 5210
Joined: Fri Mar 05, 2004 4:47 pm
Location: /USA/Washington/Seattle

Post by cordel »

Files stay as jpegs for the life of the event.
You can find and spreadsheet in the wiki to calculate how much space is required for for overall storage requirements. I think it's in the FAQ maybe.
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