[mythtv-users] Multiplex IDs? (was: Time Warner Cable weirdness in L.A.?)

Bob Sully rcs at malibyte.net
Sun Sep 19 02:41:01 UTC 2010

Bob Sully wrote:
> Kenneth Emerson wrote:
>> On Fri, Sep 17, 2010 at 11:40 PM, Bob Sully <rcs at malibyte.net> wrote:
>>> Hi all -
>>> My Myth 0.23-fixes/Ubuntu 10.04 system has been working quite well
>>> lately...no issues at all for months.  However...
>>> I'm getting my cable service via Time-Warner in the Los Angeles area.
>>> Tried to record "Nikita", episode 2 last night off channel 5_1 (HD) -
>>> callsign KTLA-DT, the local CW affiliate.  No problems recording
>>> episode
>>> 1
>>> last week via my HDHR.
>>> This time, I got a zero-byte ("B") recording; no errors in the backend
>>> logs, however.
>>> Tried to record it again tonight - same thing - though the LED on the
>>> HD-HR indicates it's recording.
>>> Tried looking at Live TV.  Channel 7_1 (ABC HD), 9_1, 11_1 (FOX HD),
>>> 13_1
>>> and 28_1 (PBS) - work.  CBS HD (2_1), NBC HD (4_1), and 5_1 (CW) do
>>> not.
>>> With the latter three channels I get:
>>> (La_) Partial lock
>>> on the OSD.  Same thing happens if I watch via the pcHD5500 card.
>>> Is Time Warner up to some sort of shenanigans re: these OTA HD
>>> channels?
>>> Anyone else with TWC in this area having an issue with these channels?
>>> XMLTV IDs changed?
>> Have you tried connecting your cable directly to your TV and scanning?
>> Maybe something has moved.
>> -- Ken E.
> Actually, I did just try this.  However, this particular TV is pretty old
> - 2004 vintage - and will only tune the SD digital channels; the HD OTA
> channels are higher up than it can scan.  Therefore, this test doesn't
> help here.
> I'm looking to replace this set, but it's big - 63" - and I'm waiting for
> the really nice LED/LCD/240Hz and/or 3D sets to come down from their price
> points before I make the change.
> I did take a look at my Schedules Direct lineup, and the XMLTV IDs in my
> database still match what's listed there.  ???
> Bob

Based on Ken's tip, I used this:


and also


to scan and then look at available clear QAM-256 channels.

A whole bunch of channels have been moved around, now on different
frequencies (and multiplexes).  I've changed the frequency IDs in the
channel table, and the service IDs are correct, but I still can't get a
lock.  I assume that the multiplex IDs have changed.  How do I figure out
the multiplex IDs from the data I have?

I have the scan.log and scan.conf files from the results of the second
page, but they don't really clue me in:



I know that SOME of the multiplex IDs haven't changed, because many of the
channels are still viewable; however, about half of the clear QAM channels
have changed their freqIDs.

Once I have the correct multiplex IDs for the changed channels I can
manually tweak them in the database (using webmin), I hope, and be all
good...?  Channel table?  Multiplex tables?   Aaaargh!

Bob Sully - Simi Valley, California, USA

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