[mythtv] RE: [mythtv-users] TV problem with PAL and SECAM

[Joseph A. Caputo]

On Monday 06 October 2003 01:51 pm, Yannick wrote:
> On Fri, 3 Oct 2003 17:12:12 -0400, Jason Schloer wrote
> > Actually this problem includes the U.S. now too. I just got the 
> > pcHDTV and since it uses ATSC for channels I can't use my other card 
> > at the same time which uses NTSC. So what are peoples suggestions. 
> > I'm guessing this should be moved out of the general settings and 
> > into the card or channel provider settings. My vote is on the 
> > channel's listings. It should be relatively easy to divide up 
> > channel listings in xmltv for different standards. How difficult of 
> > a change is this? I have some ideas, but I'll save that for when I 
> > have time and for the dev list. Anyway, just thought I'd mention it.
> > 
> > Jason Schloer
> 
>  Hello Jason,
> 
>  Thank you for your answer.
> 
> 
>  To describe my problem better, I should mention that I have tried to 
>  use v4lctl to control the TV Card device.
> 
>  It work well by itself, (Change channel AND norm correctly) but it cannot 
be
> used as an external command within Mythtv, as it conflicts with mythtv...
> 
>  
> 
>  My wish would be:
> 
>  * Associate a 'reception norm' for each channel:
>      Ex: TF1 is SECAM
>          ARD is PAL
>          etc....
> 
> 
>  Each time you'll want to change from one channel to another, mythtv would
> have to check if the current norm is the correct one. If not, switch the TV
> board to the right norm...
> 
> 
>   Are your ideas the same ?
> 
>  I've tried to setup an external script to do this task (.xawtv parser) with
> it did'nt work due to conflicts between mythtv and v4lctl as mentionned
> previously.
> 
>  * Did someone started coding something ?
> 
> 
> 
>  Another important question for me:
> 
>  As I said, the last (But not least !) problem that prevent me to install 
the
> beast in the living room is the PAL/SECAM norm... 
> 
>   Would it be (Temporaly of course) possible to disable mythtv TV features,
> and replace them by xawtv ? 
> 
>  I know that it would remove a lot of interest, but I can't convince my wife
> that I spent money to get only half of the available channels in my country.
> 
>  So, for the moment, xawtv features, with all channels, but without 
recording
> ability would be enough...
> 
> 
>  Thank you...
> 
>  Yannick, tired french guy ;-)
> 
> 
> 
>  
> 
> 
> > From: mythtv-users-bounces at mythtv.org
> > [mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Yannick
> > Sent: Friday, October 03, 2003 4:51 PM
> > To: mythtv-users at mythtv.org
> > Subject: [mythtv-users] TV problem with PAL and SECAM
> > 
> >  Hello !
> > 
> >  I found a strange problem that should only happen in countries where
> >  both PAL and SECAM channel can be found (In France, the norm is SECAM.
> > But
> > you'll find a lot of interesting foreign programs in PAL norm)
> > 
> >  xawtv works fine, with  .xawtv file containing both PAL and SECAM
> > channels.
> > 
> >  But mythtv doesn't.
> > 
> >  The channel changes well, but for example, if the last channel was PAL
> > and
> > the next one will be PAL -> It's OK.
> > 
> >  But if the next one is SECAM, you will get a totally messed picture !
> > 
> >  The problem comes from the fact that Mythtv does never care of the
> > norm...
> > 
> >  Too bad... I'll have too choose between PAL or SECAM channel to set 
> > up mythtv...
> > 
> >  Is there any way to configure Mythtv to accept and handle correctly
> > several
> > norms in the same time ?
> > 
> >  Thank you very much !



Why not write a script that uses v4lctl to change the channel & set the 
appropriate reception norm, and specify it as an external channel change 
script in mythtv-setup?  This would 'fool' Myth into thinking you had an 
external set-top box tuning your channels; Myth would never try to tune the 
card directly, but instead rely on the script.

-JAC