[mythtv-users] Channel Scan Issue

[Jay Foster]

On 3/27/2019 6:19 PM, Stephen Worthington wrote:
> On Wed, 27 Mar 2019 13:55:08 -0700, you wrote:
>
>> Due to the 600 MHz spectrum repack, some of my channels have moved.  I
>> rescanned the affected channels with no issues (good signal lock, etc.).
>>   However, one station will not lock in live TV (for testing purposes).
>> The other stations work correctly.  In live TV, it gets around 12 to 30%
>> signal, which is nuts.  It is about 97% when I do the channel scan.  Any
>> ideas what's going wrong?
>>
>> MythTV 0.28
> The repack is all about putting multiple channels on to the unused
> bandwidth of other channels.  Does the problem channel have any other
> channels on the same frequency?  Do they work?
>
No.  After some experimenting and rescanning, I came to the conclusion 
that despite me having deleted the old channels and rescanning them on 
the new transport, MythTV was still trying to tune them using the old 
transport (physical channel).  Seems that deleting channels does not 
completely delete them, or at least for this one station it did not.  I 
also discovered problems where I changed the '_' channel separator back 
to the (proper) '.' character, only to find that the changes do not 
stick for one (different) station.

I ended up deleting all channels on each of my inputs and then doing a 
whole scan on each input.  I then had to change all of the '_' channel 
separators to '.' (using mythweb) in order to get live TV to work 
(otherwise I would get a black screen).

I still need to add back in all of the channel icon files.  Doing this 
from the mythbackend-setup utility is tedious and takes most of a day.  
Is there a script I can use to automate this?  I have about 280 channels 
over six inputs to enter the icon filenames.