[mythtv-users] BBC THREE/FOUR

[Kenneth Aafløy]

Paul Woodward wrote:
> I'm slightly confused - I thought that the pids changed in 
> real time to indicate the state of transmission. Isn't it 
> therefore necessary to effectively scan on changing to that 
> channel rather than at configuration time?

That's obviously one way to do it (but I would make that an
example of how it should not be done). I've also got one of
those shared channels in my channel three, but this does not
change pids in the middle of the transmission.

One way to solve this is to add a autopid flag to the
dvb_channel table, and write a service description table
parser which does the job of updating the pids at the
beginning of a show and/or at a specified interval. Although
I would recomend having such a feature disabled as default,
because 99.9% of the channels have static pids. And it takes
some time before the table reach us, so that's yet another
delay on channel changes. There was such code (incomplete
though), in the earlier dvb-alpha releases of the mythtv-dvb
code (might still be archived).

Kenneth