[mythtv-users] What is changing my frequency tables?

Jan Schneider jan at horde.org
Wed Jan 28 22:25:31 UTC 2009


Zitat von Clay <nt4usb at yahoo.com>:

>> From: Jan Schneider <jan at horde.org>
>> Subject: [mythtv-users] What is changing my frequency tables?
>> To: mythtv-users at mythtv.org
>> Date: Wednesday, January 28, 2009, 8:41 AM
>> Hi,
>>
>> as mentioned in an earlier thread, I have a flaky TT C-2300
>> DVB-c card that requires to downtune all transponder
>> frequencies by 500kHz due to some card-specific brokenness.
>> I don't want to patch the driver and neither do I want
>> to hack the card. So I tried to do that in MythTV, but for
>> some odd reasons that doesn't work.
>>
>> What I did was to change the transponder table of my cable
>> service provider to subtract this 500kHz, and re-run
>> dvbscan. That worked fine, but to my suprise all channels
>> appeared twice, first with my frequency table, then another
>> time with the original table. I removed the rows that I
>> didn't want from channels.conf and imported it to
>> MythTV. And the same thing happened again! Now I have a few
>> questions:
>>
>> - Why is MythTV scanning the transponders again at all, I
>> already provided the list with channels.conf?
>> - Where are both, dvbscan and MythTV, getting the original
>> frequency table from? Is it provided through the DVB signal?
>> Are they hardcoded somewhere?
>> - Finally: how can I stop that from happening?
>>
>> I could probably fill the channels and dtv_multiplex tables
>> manually with a script, but I would rather like to use the
>> on-board facilities. And I really want to understand what is
>> happening there and why.
>
> When you scan, are you using the option to 'scan existing transports'?
> That shouldn't add freqs...

I tried scanning with providing a channels.conf (see above), and  
scannig all existing transports, both with the same results.

Jan.

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