[mythtv-users] can watch live tv but cannot record on some channels

[Patrick Mansfield]

On Sat, May 03, 2008 at 04:36:07PM -0700, Patrick Mansfield wrote:
> Hi -
> 
> My setup was working fine, but a few weeks ago recordings for one channel
> stopped working, even though I can watch live TV fine for that channel.
> 
> I have a QAM pchdtv tuner, running current 0.21 from svn, on an up to date
> fedora 7, with comcast. A single combined FE/BE setup.
> 
> I tried both channels on that mplexid, and they both have the same problem - 
> I can watch live tv, but scheduled recordings end up with no file.
> 
> Other channels are working fine.
> 
> I don't see anything obvious in log output for "mythbackend -v all", but
> it never seems to actually tune the channel - I never see the
> CreatePATSingleProgram() logged like I do for good recordings.
> 
> Any ideas on what to look at or change?
> 
> It's possible (or even likely) that comcast changed something, but in that
> case I would have expected live tv to also fail.
> 
> Thanks ...

Anyone?

I guess I can re-scan and see what happens.

Here are some of the database entries. The bad ones are on mplexid 195
(channel 49-1 and 6-1), example working ones are on mplexid 202 (channels
8-1, 2-1, and 8-2).

What is freqid used for? I assume my original scan via mythtv filled them in.

mysql> select * from channel where mplexid=195 or mplexid=202;
+--------+---------+--------+----------+----------+-------------+------+----------+--------------+---------+-------------+----------+------------+--------+-------+----------+----------+---------+---------------+---------------+---------+-----------+-----------+----------+-----------------+-----------------+---------------------+-------------------+------------+
| 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 | last_record         | default_authority | commmethod |
+--------+---------+--------+----------+----------+-------------+------+----------+--------------+---------+-------------+----------+------------+--------+-------+----------+----------+---------+---------------+---------------+---------+-----------+-----------+----------+-----------------+-----------------+---------------------+-------------------+------------+
|   1081 | 8-1     | 91     |        1 | KGW-HD   | KGW         |      |        0 |              | 20378   |           0 |    32768 |      32768 |  32768 | 32768 | ATSC     |        0 |       1 |               |             1 |     202|         7 |      NULL |        0 |               8 |               1 | 2008-05-03 12:19:27 |                   |         -1 |
|   1021 | 2-1     | 91     |        1 | KATU-DT  | KATU        |      |        0 |              | 20292   |           0 |    32768 |      32768 |  32768 | 32768 | ATSC     |        0 |       1 |               |             1 |     202|         2 |      NULL |        0 |               2 |               1 | 2008-05-03 19:59:31 |                   |         -1 |
|   1082 | 8-2     | 91     |        1 | Weather  | KGW Weather |      |        0 |              | 32190   |           0 |    32768 |      32768 |  32768 | 32768 | ATSC     |        1 |       1 |               |             1 |     202|        10 |      NULL |        0 |               8 |               2 | 0000-00-00 00:00:00 |                   |         -1 |
|   1491 | 49-1    | 80     |        1 | KPDX-DT  | KPDX        |      |        0 |              | 21255   |           0 |    32768 |      32768 |  32768 | 32768 | ATSC     |        0 |       1 |               |             1 |     195|         3 |      NULL |        0 |              49 |               1 | 2008-05-02 19:18:06 |                   |         -1 |
|   1061 | 6-1     | 80     |        1 | KOIN-DT  | KOIN        |      |        0 |              | 21722   |           0 |    32768 |      32768 |  32768 | 32768 | ATSC     |        0 |       1 |               |             1 |     195|        63 |      NULL |        0 |               6 |               1 | 2008-05-03 18:00:02 |                   |         -1 |
+--------+---------+--------+----------+----------+-------------+------+----------+--------------+---------+-------------+----------+------------+--------+-------+----------+----------+---------+---------------+---------------+---------+-----------+-----------+----------+-----------------+-----------------+---------------------+-------------------+------------+
5 rows in set (0.00 sec)

mysql> select * from dtv_multiplex where mplexid=202 or mplexid=195;
+---------+----------+-------------+-----------+-----------+-----------+------------+------+----------+------------+-----------+--------------+-------------------+----------------+---------+---------------+-----------+--------------+------------+----------------+---------------------+
| mplexid | sourceid | transportid | networkid | frequency | inversion | symbolrate | fec  | polarity | modulation | bandwidth | lp_code_rate | transmission_mode | guard_interval | visible | constellation | hierarchy | hp_code_rate | sistandard | serviceversion | updatetimestamp     |
+---------+----------+-------------+-----------+-----------+-----------+------------+------+----------+------------+-----------+--------------+-------------------+----------------+---------+---------------+-----------+--------------+------------+----------------+---------------------+
|     195 |        1 |        NULL |      NULL | 561000000 | a         |          0 | auto | v        | qam_256    | a         | auto         | a                 | auto           |       0 | qam_256       | a         | auto         | atsc       |             33 | 2008-03-18 22:51:12 |
|     202 |        1 |        NULL |      NULL | 627000000 | a         |          0 | auto | v        | qam_256    | a         | auto         | a                 | auto           |       0 | qam_256       | a         | auto         | atsc       |             33 | 2008-03-18 22:52:10 |
+---------+----------+-------------+-----------+-----------+-----------+------------+------+----------+------------+-----------+--------------+-------------------+----------------+---------+---------------+-----------+--------------+------------+----------------+---------------------+
2 rows in set (0.00 sec)

-- Patrick Mansfield