Re: French DVB-T Channel IDs vs. EIT Channel IDs

On 01.03.2018 10:22, Patrick Boettcher wrote:
> On Wed, 28 Feb 2018 11:01:23 +0100
> Klaus Schmidinger <[email protected]> wrote:
> 
>> On 27.02.2018 17:58, Patrick Boettcher wrote:
>> > On Tue, 27 Feb 2018 16:54:35 +0100
>> > Klaus Schmidinger <[email protected]> wrote:
>> >   
>> >> Hello Patrick,
>> >> 
>> >> your scan doesn't contain the NIT, which is where the transponder
>> >> innformation is broadcast. Can you scan that, too, please?  
>> > 
>> > Hi Klaus,
>> > 
>> > NIT attached (from another multiplex with the same symptoms).  
>> 
>>              DVB-DescriptorTag: 90 (0x5a)  [=
>> terrestrial_delivery_system_descriptor] descriptor_length: 11 (0x0b)
>>              Center frequency: 0xffffffff (= 42949672.095 kHz)
>> 
>> @@ -219,6 +219,8 @@
>>                    cDvbTransponderParameters dtp;
>>                    int Source = cSource::FromData(cSource::stTerr);
>>                    int Frequency = Frequencies[0] =
>> sd->getFrequency() * 10;
>> +                 Frequency = Transponder() * 1000000;//XXX
>> +                 dsyslog("Frequency = %08X, Transponder = %d",
>> sd->getFrequency(), Transponder());//XXX static int Bandwidths[] =
>> { 8000000, 7000000, 6000000, 5000000, 0, 0, 0, 0 };
>> dtp.SetBandwidth(Bandwidths[sd->getBandwidth()]); static int
>> Constellations[] = { QPSK, QAM_16, QAM_64, QAM_AUTO };
> 
> It works. I had to have VDR recreate the channels because it was mixing
> things up with the already existing ones.
> 
> As to why the frequency is set to "-10" I don't know (yet), but I
> remember it has always been like this since 2005.
> 
> Initial tuning files have always contained all active frequencies for
> their region, because the NIT did not set the center frequencies
> correctly.
> 
> It might be because the multiplexed transport streams are generated
> centrally and then distributed to all the base-stations where they are
> emitted as-is but on different frequencies depending on the region.
> 
> What can we do to get this upstream?

I'm afraid I don't see how this case can be handled correctly.

Maybe somebody else has an idea?

Klaus


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