[mythtv-users] Tuner Card

[Joe Votour]

--- Javier Perez <pepebuho at gmail.com> wrote:

> A small correction.
> I said that the Motorola box could display EPG data,
> therefore somewhere in
> the cable stream there should be some EPG data and
> my hope was that the
> digital capture card would be able to fetch it.
> 
> Is this EPG data usually encrypted? I am feeding my
> Mythtv box from the
> cable before it gets to the Motorola box. I can
> currently get non Digital,
>  unencrypted channels with my PVR250 card.
> 
> 
> 
> 
> On 4/15/06, Joe Votour <joevph at yahoo.com> wrote:
> >
> >
> >
> > --- Javier Perez <pepebuho at gmail.com> wrote:
> >
> > > I wonder if any of the other three digital
> capture
> > > boards, Air2PC and I
> > > don't remember the name of the other one, could
> do
> > > the trick.
> > >
> > > You are totally right, I am up a creek without
> the
> > > listing grabber.
> > >
> > > Javier
> > >
> > >
> > <snip>
> >
> > It doesn't matter which card you use, they all
> > (basically) do the same thing.
> >
> > If your digital cable signal is unencrypted, then
> you
> > can capture it with a DVB card that works for your
> > country (in North America, ATSC cards, in Europe,
> one
> > of the DVB-x cards).  However, if the signal is
> > encrypted, you won't get anything usable.
> >
> > One possibility is that they are putting program
> guide
> > listings in the stream - this is called DVB EIT,
> and
> > it is done in a lot of DVB streams, and ATSC
> streams
> > (though I think it's called PSIP over here).  But,
> > because you're gettng the EPG through the Motorola
> > box, the EIT data isn't guaranteed to be correct,
> nor
> > is it likely to even be there.
> >
> > In conclusion - you're probably wasting your time
> and
> > money in buying a digital capture card, unless
> you're
> > going with a non-digital cable source.
> >
> > -- Joe
> >
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> >
> 
> 
> 
> --
> ------------------------------
> /\_/\
> |O O|  pepebuho at pananet.com
> ~~~~ Javier Perez
> ~~~~   While the night runs
> ~~~~   toward the day...
>   m m   Pepebuho watches
>     from his high perch.
> > _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
>
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> 

When you're using a proprietary set-top box system
(like Motorola's), you don't necessarily know where
the program guide data is coming from.

Under DVB, there is a provision for putting it in the
program stream, but the set-top manufacturers are
still free to expect the data to be pushed from a
server in a proprietary format.

Thus, for the purposes of what you're trying to do,
until you can confirm otherwise, I would assume that
the EPG data is unavailable (because either it's not
in the stream, or it's encrypted).

-- Joe

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