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Use an iSight-equipped Mac as a surveillance tool
Authored by: oliverlangan on Apr 20, '06 01:47:23PM
Check out wacaw. It is a unix-y command-line tool to grab screenshots from any (quicktime) video source. It can be used with only ssh/rsh access to the machine, and snapping screenshots uses a lot less space than recording a movie. Put it into a shell script with an image-diff program and you can even throw away all the duplicate screenshots, allowing it to work as essentually a motion-capture surveillance device.

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Use an iSight-equipped Mac as a surveillance tool
Authored by: FrankPtown on Apr 20, '06 03:01:21PM

EvoCam can be set up to do time lapse movies which will do the trick without using excessive disc space. Most importantly, though is it's ability to use motion detection as a trigger. The latest version can also do motion detection with a buffer. In other words, it records all the time but keeps only the last 15 seconds. When motion is detected it saves the buffer so you won't lose any footage of the disturbance. This way you can have a regular speed movie (not time-lapse) and not use a lot of disc space.


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Authored by: sjk on Apr 20, '06 09:08:00PM
One of many things Griffin Technology's Proxi (free) can do is take periodic screenshots with iSight.

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