[mythtv] Freesat EIT

Roger James roger at beardandsandals.co.uk
Tue May 23 09:38:13 UTC 2017


On 23 May 2017 10:18:05 am Mike Bibbings <mike.bibbings at gmail.com> wrote:

> On 22/05/17 22:47, Roger James wrote:
>> Hi Stuart,
>>
>> As far as I can see I have not changed the logic of the Freesat
>> handling. Is it working in the current master? It is difficult for me
>> to tell. I have been jumping down a rabbit hole assuming I had broken
>> something in the code.
>>
>> I am getting too old for this.
>>
>> Roger
>>
>>
>> On 22 May 2017 10:05:55 pm Stuart Auchterlonie
>> <stuarta at squashedfrog.net> wrote:
>>
>>> On 22/05/17 19:36, roger wrote:
>>>> HI,
>>>>
>>>> I have recently been testing my new DVB SI code against DVB-S Freesat
>>>> here in the UK.
>>>>
>>>> I am not seeing EIT actual schedule data where I expect to see it.
>>>>
>>>> There are 4 DVB-S Freesat muxes on Astra 2E. These are :-
>>>>
>>>> DSAT1 on 10.77325 GHz.
>>>>
>>>> DSAT2 on 10.80275 GHz
>>>>
>>>> DSAT5 on 10.78800 GHz
>>>>
>>>> DSAT6 on 10.81750 GHz
>>>>
>>>> I checked the following PIDS 0x12, 0xf01, 0xf02, 0xf03 the above
>>>> transponders. I did not find any EIT actual schedule tables on any
>>>> of them.
>>>>
>>>> This is what I found on all transponder.
>>>>
>>>> Pid 0x12 - EIT  actual present/following
>>>>
>>>> Pid 0xf01 - BAT, SDT
>>>>
>>>> Pid 0xf02 - EIT other schedule
>>>>
>>>> PID 0xf03 - Table ID 0xd1 only
>>>>
>>>> No sign of EIT actual schedule data.
>>>>
>>>> I look through the code in the current head (master). In eithelper.cpp
>>>> we definitely ignore EIT other tables. I could not find anywhere in the
>>>> code where Freesat other schedule tables got special handling. What
>>>> have
>>>> I missed? How are people getting Freesat schedule information at the
>>>> moment?
>>>>
>>>> I will check tomorrow whether the other schedule tables carry data for
>>>> the currently tuned stream.
>>>>
>>>> Does anyone know of any definitive specification for the radiated
>>>> Freesat SI data?
>>>>
>>>> There are other Freesat transponders listed for Astra 2e that re are
>>>> not
>>>> in the BBC list at
>>>> http://downloads.bbc.co.uk/reception/pdfs/satellitefrequencies.pdf.
>>>> <http://downloads.bbc.co.uk/reception/pdfs/satellitefrequencies.pdf>
>>>>
>>>> I wonder whether there is something on them.
>>>> <http://downloads.bbc.co.uk/reception/pdfs/satellitefrequencies.pdf>
>>>>
>>>> Roger
>>>>
>>>
>>> As I understand it, it should just be handled like any other set of
>>> mplexes, with no special handling.
>>>
>>> The mplex which is supposed to carry the EIT data is the one which
>>> would actually need special handling.
>>>
>>> There are signalling tables which indictate when it is appropriate
>>> to use a specific mplex to collect EIT data. The non freesat channels
>>> on the same satellite are an example of this.
>>>
>>>
>>> Regards
>>> Stuart
>>>
> Roger,
>
> On my test system EIT works on current master (ppa 0.29)
>
> There are some channels which although FTA, are not in Freesat data, as
> they are not part of Freesat e.g
>
> Bloomberg HD SID 55392 is FTA but not Freesat, Bloomberg (SD) SID 50316
> is Freesat, there are plenty of others.
>
> There is a Freesat list at
> http://www.satellite-calculations.com/DVB/28.2E/28E_FreeSat_ChannelNumber.php
>
> The Sky list is at
> http://www.satellite-calculations.com/DVB/28.2E/28E_Sky_ChannelNumber.php
>
> Mike
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Stuart, Mike,

Thanks. I seem to be getting lots of EIT other schedule sections on pid 
0xf02 but very few complete tables. I am looking into this.

Cheers

Roger




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