[mythtv-users] "Channelized" camera feeds for Myth

[Vincent K. Britton]

The device you are looking for is called a channel modulator.

Here is a link to some modulators, they take composite in and then
output as a channel:  http://www.smarthome.com/av_mod.html

These devices multiplex video sources on to existing cable.  I'm pretty
sure you could just not have an input but have an output, but I have
never done it.  I have only seen devices that support up to 4 sources
(cameras in your case), I imagine you could daisy chain them for
additional sources but again this is untested.

As others have said you would need a separate Tuner card for each camera
(channel) but you would only need one backend.  If you get pvr250's they
will use the hardware mpeg encoders so CPU utilization will be low.

Does this answer all your questions?  

Vince

-----Original Message-----
From: Shane Bush [mailto:sbush at dbtech.net] 
Sent: Thursday, May 13, 2004 1:58 PM
To: mythtv-users at mythtv.org
Subject: [mythtv-users] "Channelized" camera feeds for Myth

I'm trying to come up with a video survellance method that uses Myth for
doing monitoring of rooms in a Daycare...  Myth would record the cameras
from 6am to 6:30pm M-F and the Motion app would be working the rest of
the
time to look for intruders and such...

I'm thinking that if there was some way to setup "channelized" video.
Like Channel 1 be one camera, channel 2 be another, etc...
This would be successful in using Myth the way it was intended.. with
channels.  As well as being easy to maintain, it'd be scalable (I
think).

However, I don't know if a "Channelizer" exists, or even if it
does, what it's called...

Anybody know?  Anybody got a better idea?


Here's my plan:
PlainText AsciiArt alert!!

-Feed 1---
          \                           /---MythBackend Slave
-Feed 2--- "Channelizer"-----Splitter- ---MythBackend Master
          /                           \---MythBackend Slave
-Feed 3---

Thanks,
Shane