[mythtv-users] Problem with program guide

[Michael T. Dean]

BTW, bottom- or inline-posting is preferred here (
http://www.mythtv.org/wiki/index.php/Mailing_List_etiquette ).  And
regardless, trimming long posts is very much appreciated.

On 10/10/2007 10:28 AM, Josh White wrote:
> Thanks.  I thought the same thing, but when I tried hitting "fetch..."
> it didn't seem to do anything.

That's because you had already created the channels using scan.  Scan
for channels is really for digital capture cards and for analog users
who don't have access to a great listings provider like Schedules
Direct.  If you have SD support, using Fetch channels from listings
provider is /much/ more functional.

If you've done a scan for channels /and/ Fetch channels from listings
provider, chances are you have duplicate channels in your DB, which
will--eventually--cause problems (i.e. missed recordings or worse).  I
/highly/ recommend
http://www.gossamer-threads.com/lists/mythtv/users/264034#264034 (only
the "Delete all video sources" part--don't worry about deleting capture
cards).  This won't harm any of your recording rules or recordings or ...

> Scan for channels seems to sequentially work its way through the
> channels available to the tuner.  Somehow, those channels are then
> linked with the listing data from Schedulesdirect.org
> <http://Schedulesdirect.org> (which seems to work, mostly for the
> specific show information) in the mysql database so I know that Modern
> Marvels "The Colosseum" is on at 8:00pm on Wednesday night.  So how
> does that part work, but adding the callsign ( i.e. "HISTORY" to
> channel 42, the History channel) does not?  Are these two pieces of
> information handled in two different places?  That seems strange to
> me.  I've tried looking for more information on how this works in
> Myth, but I haven't had much luck.  Does anyone know where I can find
> more information on this?  I'm not programmer, so I doubt I'd be able
> to read the source code, but this seems to be one of the key features
> of MythTV (or at least, a critical function that the rest of the key
> features are based on), and I would hope it would be documented
> someplace. 

I'm not sure I understand the question, but if you're asking how the
channels are linked to the listings data by mythfilldatabase, it's using
the xmltvid--not the callsign.  Callsign is a user-editable field that
provides a way of telling Myth that 2 channels are "substantially
identical" (i.e. if received from 2 different sources, such as a digital
capture card and an analog capture card).

Also, if (North American) analog channels are populated "correctly"
(i.e. using SD/Fetch channels from listings provider), the xmltvid will
be automatically put in place.  So, cleaning up the existing and redoing
it as described in the post above will fix the issues.

> So again, I can narrow it down to either a database problem, or a
> problem with the source data.

Make sure you run the optimize_mythdb.pl script to check and/or fix your
database before you do the Delete all...

Mike