[mythtv] DVB Support suggested Roadmap

Edward Wildgoose edward.wildgoose at frmhedge.com
Mon Apr 21 13:58:21 EDT 2003


> I am not sure about the Nova cards (which I am looking at). They can't
> demux in hardware, right? Can the driver do that? If so, does it allow
> to read several programs from the same transport stream at once?

I guess not, I think you have to demux yourself.  I don't know how this is
done, but the implication is that it isn't hard...

If there was a seperate demux component then I guess you have the option to
handle extracting two mpeg streams at the same time (as per vdr) as long as
they are on the same multiplex.  In vdr if you are recording one stream you
can switch to another, but when you try and go outside the multiple it says
"Channel unavailable).

>
> >For the 'full' support in Myth I think its important to get the database
> >into a shape that fully encompases the data in channels.conf. I don't
like the idea of putting the channels.conf line in one field [...]
> >full support and then I think that the everything in one field approach
is insufficient anyway.
> >
> What would you propose? An extra table for DVB?
>
> I thought that the tuning data should all be in one table, and because
> there might be any number of (future) tuning models, I thought that
> putting it all in one field would be the best way.

I think that we need only:

- Frequency (int)
- Video pid (int/small int?)
- Audio pid (int/small int?) However, potentially there can be optional
extra audio channels (different languages, etc.  I don't think these are
used in the UK at present.



More information about the mythtv-dev mailing list