[mythtv] DVB-C and MythTV

Christiaan van Dijk dvbmail at xs4all.nl
Sun Aug 19 20:21:55 UTC 2007

Rudy Zijlstra wrote:
> Janne Grunau wrote:
>> On Sunday 19 August 2007 15:10:29 Rudy Zijlstra wrote:
>>> Actually, this type of NITo usage is pretty much industry standard
>>> within DVB-C.
>> The only complains I can remember are from Belgium and the Netherlands. 
>> Scandinavian providers are complient too. I doubt that it is common 
>> practice for DVB-C operators.
> You can add Brazil and France (all networks)
> Those i could quickly check...
> Rudy
We can have very long discussions on this point.

That's the exact reason I made the patch, yes it's a dirty patch, I 
completely agree with this. Yet it's a temporary solution which makes it 
possible for people who dare to experiment with DVB in general to use 
MythTV with specific network IDs.

The best solution might be to add an option for selecting the network 
ID. There was already some discussion on this point in the past, 
motivation for such an addition was low since it's not DVB specification 

There however is one problem in the current implementation of the DVB 
part which complicates the network ID selection. The NITo caching 
mechanism is not working correctly as far as I could see. The system 
works if there is only one other network ID, there however can (and 
will) be many more, this is not handled correctly.
Once this part is fixed it becomes much easier to incorporate a network 
ID selection. Handling/caching of NIT and NITo could all be done from 
one function, default network ID would be the one found in NIT with a 
manual option to override (if accepted by all of course :-) ).

There will probably be a lot more discussions on this point but for the 
time being the dirty patch works for me and  other people which takes 
the pressure a bit off the issue.

If I can find the time I'll try to take a more detailed look at the 
NIT/NITo caching. I'm no expert programmer but always open for ideas and 


More information about the mythtv-dev mailing list