[mythtv-users] Multiple Video Out - Anyone? or Stop Asking...
choukalos at yahoo.com
Mon Aug 22 21:04:33 UTC 2005
I was thinking along these lines quite a while ago. I
setup a server pushing the video out from the computer
to a radio-shack RF modulator (tunable, $60 for the
modulator I believe) and piped back into my RG6
I did have several issues.
1. Time Warner was pushing a very noisy signal into
house. I hand built a low-pass capacitor (cut off
was around channel 84 or something like that.
don't remember the frequency). That let in my
el'cheapo cable and allowed me to pass my own
on any channel > 84.
2. Video out quality varied by TV. For some reason I
never could get it to work well, unless I rebooted
/restarted X with a TV physically connected to the
computer. Then I could swap RF modulator and TV
and everything would work. If I didn't do that
then I had a ton of problems. Also older TV's
had some issues with the signal. I swear my old
sony kept thinking it was getting B&W PAL and not
3. Sound volume was really low. This was soo
annoying. I ended up trying to re-encode video
files to up the vol., but got a lot of distortion.
this was what broke my "back".
4. Used the ATI remote wonder (rf) for control.
worked great, except when the microwave was on
then I had to go through some gyrations to get
something to happen. Did have occasional issues
with sticking keys, etc... never did figure out
The sound issue drove me to just dropping a front-end
in on my living room.
In your case you might be able to address the above
issues. I'd think though you'd need a seperate video
card for each "channel" you want to broadcast. You'd
also need a seperate RF modulator for each of those
channels. All in all probably fairly do-able. As
far as the remote goes, I recall reading somewhere
you could tell the ATI remote-wonder to work broadcast
on a different frequency. Perhaps you could setup
something like that where you change the remote to
a specific frequency to control your various channels.
Let me know if you have any questions... I helped a
buddy try a similar setup so I can dig up the part
numbers. He cheated and bought some filter from one
the home automation companys to filter out the cable
company noise. Not sure if he's still using it or
broke down and just went with a front-end machine.
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