On 09/15/2014 06:06 PM, Jeff Siddall wrote:
> On 09/15/2014 07:09 PM, ToddAndMargo wrote:
>> Hi All,
>>
>> I have a customer whose with a long term project which
>> includes about 30 IP cameras.  He wants to both view and
>> record.   Anyone know or have a favorite Linux server
>> for such?
>>
>> Many thanks,
>> -T
>
> I highly recommend "motion":
>
> http://www.lavrsen.dk/foswiki/bin/view/Motion/WebHome
>
> I have it currently running with 18 webcams of VGA resolution.  Motion
> is reading the cameras at 5 fps, storing only frames with motion
> including a timestamp and the motion region "boxed", and serving the
> images at 1 fps to live viewers.  All these settings are configurable
> but those are suitable for my security purposes.
>
> It works fine on an AMD Phenom II X6 1090T processor currently consuming
> approx 175% CPU time (almost 2 cores) but the processor is running in
> idle (800 MHz) clock speed mode due to the reduced priority I give to
> the motion process.  Theoretically this looks like it could scale to
> more than 100 cameras with this same CPU running full clock speed.
>
> Since only frames with motion are stored the disk activity is relatively
> low most of the time.  However, each image is about 50 kB and at 5 per
> second that could be 250 kB/s per camera with continuous motion.
> Extended to 100 cameras that would be 25 MB/s which is still not that bad.
>
> The software runs 24x7 and despite the enormous amount of traffic it
> processes it has been rock solid.  Honestly I don't remember the last
> time it gave me issues.
>
> As for live view I use a separate system.  I built a webpage for groups
> of 6 cameras in a 3 wide by 2 high grid.  That works out to 1920x960
> which fits nicely on a 1080p widescreen monitor.  Then I use a java
> viewer (cambozola) to stream the video inside the browser.  3
> screens/browser windows show all 18 cameras.  Obviously this would need
> to scale up with the number of cameras.
>
> Jeff
>

Thank you!

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