Not sure it will answer your question but there was an article in December 2010 issue of Linux Magazine re surveillance cameras and linux.

HTH.

B.J.

Tue Feb 22 21:00:42 EST 2011, RHEL 6, Linux 2.6.18-194.32.1.el5 athlon


On Tue, 2011-02-22 at 20:27 -0500, ken wrote: 
I heard about some inexpensive security cameras which get their power
through the same cat5 cable which delivers the data/pictures (which
would simplify wiring tremendously).  Does anyone know about these?  Do
they work with Linux, particularly CentOS?


tnx 4 tips.
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