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.
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. > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20110222/76f8436a/attachment.html>
On 02/22/11 5:27 PM, 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? >TCP/IP cameras would work with any OS, most just FTP or whatever the pictures to a webserver you provide, or they run their own server and you can wget the pics off them. but I've never seen any IP cameras I'd call really cheap. Panasonic makes a nice line of them, some even have remote pan/zoom via a http interface.
On Tue, 22 Feb 2011, 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. >I've been meaning to try ZoneMinder (www.zoneminder.com) for some time but have not just yet. In any case there is some good info on cameras in a few places on that site, "Hardware Compatibility List" section of the forum for one. -- Mike :wq
> 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?I have a security camera, though not powered through the cat5, will have to check that out... Anyway, I'd recommend these sites: http://www.zoneminder.com/ http://www.cctvcamerapros.com/ Right now I have my camera attached to an RF modulator and splitter which merges the signal onto the coax run on channel 65 so I can watch it on my TV. As far as integrating with Linux, would check out Zone Minder link above, otherwise if you modulate onto your TV stream like I did you can then just use mythtv or any capture program if you wanted to schedule captures, etc. Have fun, Josh
On 02/22/2011 09:02 PM B.J. McClure wrote:> 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. > > ....BJ, I looked around Linux Mag's site for quite a while, did a couple searches, and browsed the contents Dec 2010 and quite a few issues before and after that, but couldn't find any article about selecting and/or setting up surveillance cameras... except one on implementing motion detection in cameras. Is that the one you were thinking of? Still, thanks much. I'll probably come back to that one later. If some other info source comes to you, I'd be glad to hear about it.
On Tue, 22 Feb 2011, ken wrote:> To: CentOS Mailing List <centos at centos.org> > From: ken <gebser at mousecar.com> > Subject: [CentOS] security cameras > > 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?AFAIK there are different options you can take with this. Webcam USB camera or a PAL/NTS CCTV camera with a phono or BNC connector. Use a PCI based video capture card to connect CCTV cameras to. Not sure about the software to use though. Use a stand alone DVR - digital Video recorder to capture and record sound/video, as well as simultaneous monitor and IP broadcast over the net. Some of these boxes run Linux and an integral web server. You can also manage and control the DVR across the net. You might find these links helpfull: http://www.henrys.co.uk/cctv.htm http://en.wikipedia.org/wiki/Digital_Video_Recorders I think you will get far better video quality using CCTV cameras than a webcam on a USB port. Kind Regards, Keith Roberts ----------------------------------------------------------------- Websites: http://www.karsites.net http://www.php-debuggers.net http://www.raised-from-the-dead.org.uk All email addresses are challenge-response protected with TMDA [http://tmda.net] -----------------------------------------------------------------
On 02/24/2011 09:00 AM, centos-request at centos.org wrote:> On 02/23/2011 01:36 PM John R Pierce wrote: >> > On 02/23/11 10:16 AM, Keith Roberts wrote: >>> >> I think you will get far better video quality using CCTV >>> >> cameras than a webcam on a USB port. >> > >> > you may think that, but those solutions you mentioned are all NTSC >> > composite video, while even a $30 USB webcam now days is 2 megapixels or >> > higher. >> > >> > anyways, the OP wants cameras that connect to the network and get their >> > power off the ethernet cable, not a USB or a CCTV camera. >> > .... > Yes. True. I'm not interested in either USB or CCTV. Ethernet cams > are much better and smarter technology and, from what I hear, easier to > install and set up.From experience I can attest to the fact that PAL/NTSC CCTV cameras are significantly inferior to modern digital security cameras. I have used devices from Axis, who appear to be the largest and most diverse manufacturer (www.axis.com) but they're not the cheapest. As an aside, Axis cameras run embedded Linux. The newer Ethernet-enabled cameras can use POE (power over Ethernet) but you'll need either a power supply that you insert somewhere along the cable run, or a POE-enabled switch which supplies power to its Ethernet ports. Several brands are available. Using POE makes a lot of sense and saves a lot of trouble, but make sure your Ethernet cable installation is of high quality. Open-source software such as ZoneMinder works with cameras from several manufacturers, and runs on CentOS. I personally haven't tried it, but I understand it works well. Chuck
On Thursday, February 24, 2011 08:25:35 pm Chuck Munro wrote:> Open-source software such as ZoneMinder works with cameras from several > manufacturers, and runs on CentOS. I personally haven't tried it, but I > understand it works well.I'm running a zoneminder instance on CentOS 5 under VMware ESX now; there are a few caveats. First, I didn't find RPM's for ZoneMinder for CentOS for the current version of ZoneMinder. For F12, F13, and F14 they're out there, but niether EPEL/RPMfusion nor RPMforge has them that I could find; but I didn't look in any testing repos, just the production stable ones. Even ATrpms doesn't package ZoneMinder for C5. So I built from source. This has some odd dependencies, for a specific version of libraries needed. It builds ok, but it does take some work to do. I'm tempted to take the Fedora source RPM and try it, one day when I have time to do that, as it will likely need some patching (but I'm not sure of that, since I haven't tried it). Once built and the database configured and the schema loaded, it works fine. However, if you're using a lot of IP cameras and a high frame rate, you need a lot of CPU power. If you set the frame rate to 1 frame per second the CPU utilization with eight or nine cameras isn't too bad; trying to do 5-10 frames per second takes nearly 100% of a dual vCPU VMware ESX instance on our Dell PE6950's (four 2.8GHz dual-core Opterons). ZM can take all kinds of video inputs; it can even 'chain' to another zoneminder instance as if the other zm instance was an IP camera. So you could build a multichannel NTSC or PAL video capture box for cheap CCTV cameras (monochrome CCTV cams with C or CS-mount interchangeable lenses can be had for way less than $100 each), and then chain that to another zoneminder.