[mythtv-users] Help please with Change Inputs on TV Tuner card

[stan]

I was waiting for someone to jump in with the real answer since I'm fairly
new myself, but I'll suggest some stuff to try while you're waiting...

I have a PVR-350 with two inputs running on Fedora FC4.  I have two inputs
to the card, my roof antenna for local channels going into the RF tuner
input and a Dish satellite TV box feeding the cards s-video (I assume
equivalent to your composite input) and mobo analog sound inputs.

I defined the two card inputs as you did.

Mine might be a little different because I also defined two sources on
Zap2It, one for my local channels and one for Dish TV.

I set each input from the card (I called them over-the-air and dish) to the
appropriate feed from Zap2It (I think it was on the input connections screen
that it let me choose one Zap2It thing or the other).  Then I clicked
something that said "download info from listing source" or something like
that.  I think it got the channel and frequency info from Zap2It rather than
scanning.

I don't have an IR blaster yet.  I planned to manually set the channel on my
Dish box to feed the PVR-350 s-video when I wasn't watching over the air TV.

All was well for live TV.  I switched from RF tuner input to s-video input
by selecting a Dish TV channel.

Then I tried to record from a Dish TV channel, and it didn't work.  The
mythbackend log file said something about an error trying to change
channels.

Bottom line is this:  Zap2it must have given me some frequencies for the
Dish TV channels.  I have no idea what those frequencies would mean because
the Dish TV box is an absolute requirement.  Live TV switched properly from
RF to s-video though even though it got the channel changing error.  When
mythbackend gets an error it doesn't record.  It did, though, let me watch
live TV.

The solution for me was to define a dummy IR blaster channel changing script
that did nothing more than echo "The channel changing script is running" and
point to the script in the channel changing script field in input
connections?? (I think that's where it was).  That worked perfectly.  My
dummy echo command even wound up in the mythbackend log.

So, if you don't any other recommendations, you might try somehow defining
channels for your composite input and using a dummy channel change script
rather than the keyboard c command (which I haven't tried).

I'm not sure you'll need frequencies (that you won't be using) defined for
your composite input channels, but you might need the dummy channel changing
script.

--stan

> -----Original Message-----
> From: mythtv-users-bounces at mythtv.org 
> [mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Derek Meek
> Sent: Tuesday, May 23, 2006 2:01 PM
> To: Discussion about mythtv
> Subject: Re: [mythtv-users] Help please with Change Inputs on 
> TV Tuner card
> 
> I think you can only use one source per card - not sure though, check
> the docs
> 
> Mercury Morris wrote:
> 
> >I've run out of ideas, so I'm asking for help with a PVR-250 card.
> >
> >Running kernel 2.6.16.5, mythtv 0.19.20060331-1, and ivtv-0.6.1,
> >I have a problem getting the PVR-250 to switch to Composite1.
> >
> >Here are the latest two tests I have run.
> >
> > - Test 1
> >
> > - Deleted all the Capture Cards and Video Sources
> > - Defined a single card - PVR-250 [MPEG:/dev/video0]
> > - Defined two Video Sources - NTSC and 4DTV
> > - Defined two Input Connections - Tuner1 -> NTSC, Composite1 -> 4DTV
> > - After scanning the NTSC channels, I select Watch TV - 
> Tuner1 comes up OK
> > - Then pressing 'c' gives a pause, then Tuner1 continues, no switch
> >to Composite1
> >
> > - Test 2
> >
> > - Deleted all the Capture Cards and Video Sources
> > - Defined a single card - PVR-250 [MPEG:/dev/video0] but this time
> >choosing Composite1
> >   as the default input
> > - Defined one Video Source - 4DTV
> > - Defined one Input Connection - Composite1 -> 4DTV
> > - Started the backend and frontend and selected Watch TV - 
> Composite1
> >comes up OK
> > - Then I went back to mythtv-setup and defined another 
> Video Source - NTSC,
> >   and another Input Connection - Tuner1 -> NTSC
> > - Back to Watch TV - but this time Tuner1 came up - NOT 
> Composite1 !!
> > - Pressing 'c' had the same effect as Test 1 ...,
> >   a slight pause, Tuner1 continued, no switch to Composite1
> >
> >This just has to be something I'm doing wrong, or something 
> I've failed to do.
> >It's so frustrating because I have another system running 
> mythtv 0.18 with a
> >PVR-250, and it's working just fine.
> >
> >Can you see something I'm missing here?  Do you have a 
> similar setup that's
> >working (0.19 and a PVR-250 with Composite1 input)?
> >
> >Thanks for any ideas.
> >
> >  
> >
> 
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