[mythtv-users] how to set xmltvid to unknown and keep it there?

[Michael T. Dean]

On 07/07/2011 02:00 PM, Eric Sharkey wrote:
> On Thu, Jul 7, 2011 at 12:59 PM, Michael T. Dean wrote:
>>> source 5 has only clear QAM channels.  Sources 4 and 6 have all
>>> channels enabled in schedules direct, but differ as channels usually
>>> blocked by 5C encryption marked with visible = 0 in source 4.
>> (ideally those channels not used in Firewire would be removed from the
>> Firewire Video source--which is possible with the below configuration)
> Ideally, upon attempting to tune a firewire channel and receiving no signal,
> mythTV would dynamically fail over to another tuner in real time.
>
>> OK, based on your description--the fact that you're sharing one
>> Schedules Direct lineup with mutliple MythTV Video Sources--you need to
>> keep the channels in the lineup, so the best solution is to run
>> mythfilldatabase with the --remove-new-channels argument.
> We discussed this on this list some months back.  This approach has the
> significant down side that it means that new channels won't be added without
> manual intervention.  I don't really like that.
>
>> Yeah, there are actually 3 different matching criteria that could be
>> used, all related to channel numbers.  Besides "Live TV" channel number
>> configured in MythTV, if the channel is on the same frequency Schedules
>> Direct says it's on, and the ATSC minor channel number is the same as
>> Schedules Direct says, mythfilldatabase will assume it's the same
>> channel.
> I didn't know that.  So, are you saying that this is a Schedules
> Direct problem?  They're saying History/HI is on freqid 127/128, but
> it's not, and that's the ultimate source of the problem?

Definitely sounds like the lineup needs updating (though I still say 
that giving mythfilldatabase permission to change your 
already-configured Video Source is the ultimate source of the problem 
:).  You could verify that the lineup needs fixing by grabbing the raw 
data from Schedules Direct using tv_grab_na_dd and checking that channel 
in the XML.

> I have an HDHR Prime on pre-order.  I'm hoping that after it arrives,
> I can script something that can get a proper channel map for all of
> the tuners and make everything "just work" despite frequent changes by
> the provider.

If nothing else, you can make a script that runs mythfilldatabase once 
for each of your sources, using the --sourceid argument, and use 
--remove-new-channels only for the HDHR source (and continue hoping that 
mythfilldatabase's updating your Firewire and analog Video Sources will 
cause less damage than its not doing so).  Then, set that up as your:

mythfilldatabase program
Use 'mythfilldatabase' or the name of a custom script that will populate 
the program guide info for all your video sources.

in mythtv-setup.

Mike