[linux-dvb] DVB file formats

Christophe Thommeret hftom at free.fr
Thu Jun 16 04:30:53 CEST 2005


Le Jeudi 16 Juin 2005 04:12, Andrew de Quincey a écrit :
> > > I'm sure I remember seeing a transponder where all the channels
> > > had the same service_id as well :(
> >
> > No, that's not possible. The service_id references the program_number in
> > the PAT, and if they all had the same service_id, they'd all point to the
> > same PAT entry, and thus to the same PMT, i.e. be all exactly the same
> > service.
>
> I'll reply to your other points later once I've given them some thought -
> but this one I couldn't resist:
>
> I know that they are _supposed_ to have unique service_ids. However this
> one channel _really_ did have the same service_id for all channels in its
> PAT, and they actually did point at seperate PMT tables. Who knows how the
> hell you were ever meant to select a channel :)
>
> Hotbird is a mess IMO. Good for robustness testing though! :)

At least, there is actually a TS where all channels (with different sid) point 
to the same PMT.

-- 
Christophe Thommeret




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