[NMLUG] Video Server

[niosop at msn.com (MATTHEW BOWIE)]

I don't have any experience with those particular cameras, but the main 
problem is going to be getting the data into linux.  Most IP video solutions 
come w/ proprietary, Windows only software for stream capture.

We have some cheap IP cameras that have an html current image, java applet 
based streaming image, and activeX streaming.  In Linux you can use either 
the html version, or the java version for viewing, but for automated capture 
only the html image process is of any use.  A simple curl script to query 
the camera for the current image, save the returned image, add it to a movie 
file works, but is suboptimal (excessive bandwidth consumption and low 
capture rates).

If you're cameras have some sort of interface that will allow linux to get 
raw mjpeg streams from them, then almost any video software can be used to 
archive/view the streams.  3 pass encoding into xvid would give you the best 
quality/size ratio for archiving, but takes a while.  Depending on framerate 
and resolution, as well as computer speed, you may or may not be able to 
encode to xvid real time.

If you don't have access to the raw video streams, your other option is to 
use the IP decoder (not sure if you got one with your setup or not), and a 
TV input card that can accept data from the decoder (I don't know what 
output options the decoder has).  Then you can view/archive the stream(s) 
from there.

Hope this gives you some ideas,
Matthew


>From: Tim Emerick <timothyemerick@yahoo.com>
>Reply-To: New Mexico Linux Users Group Mail List <nmlug@nmlug.org>
>To: nmglug@nmglug.org, nmlug nmlug <nmlug@nmlug.org>
>Subject: [NMLUG] Video Server
>Date: Wed, 11 Jan 2006 12:47:44 -0800 (PST)
>
>I was reading my latest Linux Journal and there was an article about a 
>video
>server that I found interesting but not suitable for my application.
>
>I have about a dozen TCP/IP video cameras that I would like to hook up to a
>video server/recorder for surveillance.  Any experience with linux software
>to record & archive multiple video (and potentially audio) feeds from these
>cameras?
>
>fyi, these cameras are IndigoVision (http://www.indigivision.com) Digital 
>IP
>Cameras  IPC-9313N/IV
>
>Thanks.
>
>Tim
>
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