[mythtv-users] Odd rewriting of program length

[Ross Boylan]

I have a rule to record Castle, which is being rebroadcast in the
early morning a couple of times a week.
For the last month or more it has been sporadically recording as if it
were a 30 minute show; it's an hour.

The program listing always shows the show as an hour, even when I
check the day before.
Here's a listing of my program table for Castle:
| chanid | starttime           | endtime             | subtitle
       | airdate | originalairdate | programid      | generic | first
| last |
+--------+---------------------+---------------------+------------------------+---------+-----------------+----------------+---------+-------+------+
|  20701 | 2021-05-09 08:00:00 | 2021-05-09 08:30:00 | That '70s Show
       |    0000 | 2014-04-21      | EP010855880129 |       0 |     1
|    1 |
|  20701 | 2021-05-10 08:00:00 | 2021-05-10 09:00:00 | Law & Boarder
       |    0000 | 2014-04-28      | EP010855880130 |       0 |     1
|    1 |
|  20701 | 2021-05-16 08:00:00 | 2021-05-16 08:30:00 | Veritas
       |    0000 | 2014-05-05      | EP010855880131 |       0 |     1
|    1 |
|  20701 | 2021-05-17 08:00:00 | 2021-05-17 09:00:00 | For Better or
Worse    |    0000 | 2014-05-12      | EP010855880128 |       0 |
1 |    1 |
|  20701 | 2021-05-23 08:00:00 | 2021-05-23 08:30:00 | Driven
       |    0000 | 2014-09-29      | EP010855880132 |       0 |     1
|    1 |
|  20701 | 2021-05-24 08:00:00 | 2021-05-24 09:00:00 | Montreal
       |    0000 | 2014-10-06      | EP010855880133 |       0 |     1
|    1 |
|  20701 | 2021-05-30 08:00:00 | 2021-05-30 09:00:00 | Clear & Present
Danger |    0000 | 2014-10-13      | EP010855880134 |       0 |     1
|    1 |
|  20701 | 2021-05-31 08:00:00 | 2021-05-31 09:00:00 | Child's Play
       |    0000 | 2014-10-20      | EP010855880135 |       0 |     1
|    1 |
|  20701 | 2021-06-06 08:00:00 | 2021-06-06 09:00:00 | Meme Is Murder
       |    0000 | 2014-10-27      | EP010855880136 |       0 |     1
|    1 |
|  20701 | 2021-06-07 08:00:00 | 2021-06-07 09:00:00 | The Time of Our
Lives  |    0000 | 2014-11-10      | EP010855880137 |       0 |     1
|    1 |
+--------+---------------------+---------------------+------------------------+---------+-----------------+----------------+---------+-------+------+

Notice there are 2 episodes broadcast each weekend. The pattern (see
endtime) is the first is 30 minutes and the second is 60 minutes.
But looking to the future, all are 60 minutes.

In principle, SchedulesDirect, which I use, could be updating their
listings at the last minute (even then, I'm not sure the backend would
get the update),
but it seems more likely this is from weirdness on my server.

Any suggestions for what the problem might be, or how to investigate?

Running 30.0-dmo4-rb02 on Debian/barley.  The rb02 was me backporting
Python 3 support.