[mythtv-users] Help: dtv_multiplex data missing for hd channels

mythtv at lrlart.com mythtv at lrlart.com
Wed Dec 6 01:09:23 UTC 2006


I'm using comcast cable and have connected it to my pchdtv-5500 card. So
I've scanned the channels with QAM256 and find a good selection of
channels.

Livetv always works, but recording always fails.

My log file shows:

2006-12-05 16:48:17.433 DVBTuning Error: Could not find dvb tuning
parameters for mplex 32767



So, the channel db has the proper entry:

+--------+---------+--------+----------+----------+------------------+--
----+----------+--------------+---------+-------------+----------+------
------+--------+-------+----------+----------+---------+---------------+
---------------+---------+-----------+-----------+----------+-----------
------+-----------------+
| chanid | channum | freqid | sourceid | callsign | name             |
icon | finetune | videofilters | xmltvid | recpriority | contrast |
brightness | colour | hue   | tvformat | commfree | visible |
outputfilters | useonairguide | mplexid | serviceid | atscsrcid |
tmoffset | atsc_major_chan | atsc_minor_chan |
+--------+---------+--------+----------+----------+------------------+--
----+----------+--------------+---------+-------------+----------+------
------+--------+-------+----------+----------+---------+---------------+
---------------+---------+-----------+-----------+----------+-----------
------+-----------------+
|   1702 | 702     | 702    |        1 | KTVUDT   | KTVUDT (KTVU-DT) |
|     NULL |              | 19571   |           0 |    32768 |
32768 |  32768 | 32768 | Default  |        0 |       1 |               |
0 |   32767 |         0 |      NULL |        0 |             702 |
0 |
+--------+---------+--------+----------+----------+------------------+--
----+----------+--------------+---------+-------------+----------+------
------+--------+-------+----------+----------+---------+---------------+
---------------+---------+-----------+-----------+----------+-----------
------+-----------------+
1 row in set (0.00 sec)

But the mplexid table dtv_multiplex doesn't have an entry for 32767. 


Is this a problem with the scanning when running mythtv-setup? 

Or is this a problem with the zap2it listings? 

If it is a scanning problem do I need to build up my own channels.conf
(even though it appears that with .20 this is no longer needed:
http://www.mythtv.org/wiki/index.php/Adding_QAM_Channels_For_HDTV_Tuner_
Cards). 

Thanks for any help or hints!

Mike



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