VDR constantly tries to change transponder frequency

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On 5/27/06, Klaus Schmidinger <Klaus.Schmidinger@xxxxxxxxxx> wrote:
> Anssi Hannula wrote:
> > ...
> > Okay, attached is a patch for nit.c that checks for all the frequencies
> > in frequency_list_descriptor for the channel's frequency and if found,
> > use it so that channel's frequency is not changed.
> >
> > Also in the detection of new transponders all frequencies are added for
> > the EITscanner.
> >
> > I tested it by removing a transponder from channels.conf, and VDR found
> > it again (though it took a while, as there are *many* frequencies in the
> > frequency_list_descriptor). This too hasn't been working before on the
> > DVB-T network of Finland.

Just to be clear, of course it worked before in the Digita's (operator
of the Finnish DVB-T) network too if you happened to be one of lucky
ones whose center_frequency in delivery_descriptor happens to be the
correct one.

> I guess it's fair to assume that each TransportStream can contain
> at most one FrequencyListDescriptor, right? Otherwise the above
> loop could mix frequencies from different coding types, which would
> lead to confusion later on.

I guess it is.

I can think of only one possible usage case when there could be
multiple FrequencyLists: If the same multiplex is transmitted in
multiple mediums in multiple frequencies, e.g. DVB-T and DVB-C,
multiple lists could be used. But yes, that wouldn't make much sense
as the bandwidth of DVB-T and DVB-C differs.

-- 
Anssi Hannula


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