[mythtv-users] How does backend/frontend work with Directv?

[Joel Feenstra]

The remote command to change the channel goes the the backend, which 
then executes an external script (I use the RCA.pl script that's been 
floating around). The script sends the channel change command over the 
serial port to the directv receiver. You can switch between inputs on 
the tv card so that composite or svideo or whatever is used.

Curtis Stanford wrote:
> I haven't actually set up a MythTV system yet and am not quite clear 
> what the separation is between the backend and frontend. I understand 
> the backend encodes all the video and the frontend decodes and displays 
> it. Has anyone done this separation using Directv or an external 
> receiver? Can someone verify my idea of how this works?
> 
> - Put satellite receiver in the basement.
> - Hook up to backend box capture card.
> - Frontend is next to TV and hooked to backend with ethernet.
> - Remote control on frontend.
> 
> OK, so when you want to watch TV, the backend changes to the right 
> channel, starts up the ring buffer and fires encoded video to the 
> frontend which then decodes and displays it?
> 
> When you fire a remote command at the frontend, does it fire the command 
> to the backend (if necessary, i.e. changing channels)? How does that work?
> 
> Thanks a lot
> 
> Curtis
> 
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