[mythtv] [mythtv-commits] Ticket #7676: Switching between DVB-S and DVB-T

Stuart Auchterlonie stuarta at squashedfrog.net
Thu Jan 7 15:19:54 UTC 2010

On 07/01/2010 13:25, MythTV wrote:
> #7676: Switching between DVB-S and DVB-T
> ------------------------------+---------------------------------------------
>   Reporter:  jode              |       Owner:  ijr
>       Type:  defect            |      Status:  new
>   Priority:  minor             |   Milestone:  unknown
> Component:  MythTV - General  |     Version:  unknown
>   Severity:  medium            |     Mlocked:  0
> ------------------------------+---------------------------------------------
> Comment(by anonymous):
>   Replying to [comment:4 freexe@…]:
>   >  I think I found my problem, but haven't had a chance to test it fully. I
>   was using the same video source for both the cards and that seems to have
>   been causing lots of the issues. I wasn't aware you couldn't use the same
>   video source but found a forum post saying that myth gets confused to
>   which card to tune if you don't (bug?).
>   >

>   >  I am getting EIT data fine although I was having some issues around when
>   0.22 came out but discovered it was because of the digital switchover
>   going on in the UK. There seemed to be sub-channels getting the EIT data.
>   How have you got on with this? I have just taken delivery of the same S2
>   card, with the intention of replacing my 2 Nova T500's to get HD, I now
>   realise I will lose some channels if I do this. I dont know how Myth EPG
>   will deal with 2 inputs, what happens when BBC 1 is on both, what happens
>   when a program is on DVB-T DVB-S and DVB-S2 at the same time?
>   Jeff

I'm going to answer once for completeness and then ignore further

Inputs that carry a common set of channels may use the same data

If the inputs vary, for example dvb-t vs dvb-s or dvb-s FTA vs dvb-s
with a CAM, then you need separate data source.

As for the case of BBC 1 being available via dvb-t or dvb-s, the
scheduler will consider the channels identical for recording purposes
IF and only IF the _CALLSIGN_ is the same

Now i know from experience BBC1 is signalled as "BBC ONE" on dvb-t
and as "BBC 1", "BBC 1 London", "BBC 1 South" etc... on dvb-s.
This makes the callsigns different, so you need to do some work
to set it up. This is left as an exercise for the reader as this is
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