[mythtv] Freesat EIT

Stuart Auchterlonie stuarta at squashedfrog.net
Tue May 23 08:36:35 UTC 2017


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.

Hi Roger,

Yes it works in current master and in fixes/0.28


Regards
Stuart

> 
> 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
>>
>>
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> 
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