[mythtv-users] ProcessPAT: Program not found in PAT. Desired program # not found in PAT

Jason Zarin jason at zarin.org
Wed Feb 3 21:08:30 UTC 2016


Mark Perkins perkins1724 at hotmail.com
Wed Feb 3 20:33:12 UTC 2016
Previous message (by thread): [mythtv-users] ProcessPAT: Program not found
in PAT. Desired program # not found in PAT


> So just to clarify, you have working audio and video in the recording up
to some "point" where the audio disappears and the file is corrupted in
some fashion but video is still present?

Exactly. Right at the point that the error log occurs there's a slight
video glitch in the recording. From that point on, video returns to normal
but audio is gone. I use kodi as a frontend, and the video will continue to
play, silently. If you try to select an audio track, it won't let you (the
audio track list is greyed out) (kodi selecting audio tracks works fine
w/unaffected mythtv recordings).

The affected mpg file will crash VLC when it gets to the "glitch". It will
load in mplayer, but shows 0 audio tracks.

I've download the affected mpg files to my non-myththv computer to see if
it's a linux-specific thing that causes the file not to play. But when
downloaded to my mac, at least, the affected mpg recordings won't play
either. "Normal" mpg files download from the mythtv backend play perfectly
on that mac.

> Does the point at which problems happen tend to align with program
transitions to / from commercials or something similar? Or after x min of
recording?

This is PBS, which I have flagged as commercial-free in the mythtv-setup
channel editor.

As far as I can tell the ProcessPAT errors seem to occur randomly.
Sometimes it'll be in the first few seconds of the recording, sometimes in
the last few minutes, and sometimes in the middle of the show. When it
happens, I do a "delete and rerecord." Sometimes the rerecorded show has
the same error, but it's in a different spot.

The HDHomeRun device's webpage says there's 100% signal lock and strength
on the channel, so I assume it's not a wiring issue. The HDHomerun is the
only device attached to the coax anyway, which runs directly from the
verizon fios box.


On Wed, Feb 3, 2016 at 10:54 AM, Jason Zarin <jason at zarin.org> wrote:

> I keep getting this log error for many recordings on a particular PBS
> channels that I'm recording on ClearQAM using an HDHomeRun Connect on
> Verizon FIOS.
>
> Running mythtv .27-6 under mythbuntu 14.04.03
>
>
> Feb  1 21:54:04 MythHTPC mythbackend: mythbackend[7488]: E
> HDHRStreamHandler mpeg/mpegstreamdata.cpp:820 (ProcessPAT)
> MPEGStream[1](0x7f282c138180): ProcessPAT: Program not found in PAT. Rescan
> your transports.
> Feb  1 21:54:04 MythHTPC mythbackend: mythbackend[7488]: E
> HDHRStreamHandler mpeg/mpegstreamdata.cpp:427 (CreatePATSingleProgram)
> MPEGStream[1](0x7f282c138180): Desired program #3104 not found in
> PAT.#012#011#011#011Cannot create single program PAT.
>
> Anything that gets recorded when that error pops up results in a broken
> mpg file, in which the audio track completely disappears after the
> ProcessPAT error timestamp. It seems to be isolated to particular PBS
> channels on my Verizon FIOS cable (mostly to 23-1), which all are various
> subchannels of the same channel 70. I doubt it is hardware-related as I had
> no problems recording these stations before I switched to mythtv from Next
> PVR on windows. and the live video appears fine in VLC from the hdhomerun
> directly.
>
> I've tried deleting channels, deleting transports, and rescanning both.
> I've tried deleting the capture cards and restarting backend setup from
> scratch. I've rescanned the HDHomeRun using both its webserver and the
> linux hdhomerun_config tool. But nothing has worked to eliminate these
> errors. I have all the EIT-related options unchecked and am using
> SchedulesDirect for listings.
>
> What's going on? What else should I try?
>
>
> MySQL Channel and Transport info:
>
> mysql> select chanid,channum,callsign,name,xmltvid,mplexid,visible from
> channel order by (channum+0);
> +--------+---------+----------+---------+---------+---------+---------+
> | chanid | channum | callsign | name    | xmltvid | mplexid | visible |
> +--------+---------+----------+---------+---------+---------+---------+
> |   1062 | 6_2     | CBS6ANT  | CBS6ANT | 46787   |      11 |       1 |
> |   1063 | 6_3     | CBS6XTR  | CBS6XTR | 47679   |      11 |       1 |
> |   1061 | 6_1     | WTVR-HD  | WTVR-HD | 36075   |      11 |       1 |
> |   1081 | 8_1     | WRIC-TV  | WRIC-TV | 20458   |      11 |       1 |
> |   1121 | 12_1    | WWBT-HD  | WWBT-HD | 30305   |      10 |       1 |
> |   1122 | 12_2    | 12 MeTV  | 12 MeTV | 30674   |      10 |       1 |
> |   1123 | 12_3    | Escape   | Escape  | 30675   |      10 |       1 |
> |   1231 | 23_1    | WCVE-HD  | WCVE-HD | 43782   |       9 |       1 |
> |   1233 | 23_3    | WCVE-DT  | WCVE-DT | 58918   |       9 |       1 |
> |   1232 | 23_2    | WCVE-CR  | WCVE-CR | 58837   |       9 |       1 |
> |   1352 | 35_2    | MyTV (W  | MyTV (W | 52724   |      10 |       1 |
> |   1351 | 35_1    | Fox-HD   | Fox-HD  | 34674   |      10 |       1 |
> |   1353 | 35_3    | CometTV  | CometTV | 69969   |      10 |       1 |
> |   1491 | 49_1    | ION      | ION     | 31037   |      12 |       1 |
> |   1571 | 57_1    | WCVW-HD  | WCVW-HD | 44732   |       9 |       1 |
> |   1652 | 65_2    | Bounce   | Bounce  | 55716   |      12 |       1 |
> |   1651 | 65_1    | WUPV-HD  | WUPV-HD | 35569   |      12 |       1 |
> |   1653 | 65_3    | Grit     | Grit    | 90853   |      12 |       1 |
> +--------+---------+----------+---------+---------+---------+---------+
> 18 rows in set (0.00 sec)
>
> mysql> SELECT mplexid, sourceid, frequency, modulation, sistandard FROM
> dtv_multiplex;
> +---------+----------+-----------+------------+------------+
> | mplexid | sourceid | frequency | modulation | sistandard |
> +---------+----------+-----------+------------+------------+
> |       9 |        1 | 501000000 | qam_256    | atsc       |
> |      10 |        1 | 507000000 | qam_256    | atsc       |
> |      11 |        1 | 513000000 | qam_256    | atsc       |
> |      12 |        1 | 525000000 | qam_256    | atsc       |
> +---------+----------+-----------+------------+------------+
> 4 rows in set (0.00 sec)
>
> mysql> SELECT chanid,channum,callsign,sourceid,mplexid,serviceid FROM
> channel order by (channum+0);
> +--------+---------+----------+----------+---------+-----------+
> | chanid | channum | callsign | sourceid | mplexid | serviceid |
> +--------+---------+----------+----------+---------+-----------+
> |   1061 | 6_1     | WTVR-HD  |        1 |      11 |      3600 |
> |   1063 | 6_3     | CBS6XTR  |        1 |      11 |      3598 |
> |   1062 | 6_2     | CBS6ANT  |        1 |      11 |      3310 |
> |   1081 | 8_1     | WRIC-TV  |        1 |      11 |      3100 |
> |   1123 | 12_3    | Escape   |        1 |      10 |      3313 |
> |   1122 | 12_2    | 12 MeTV  |        1 |      10 |      3305 |
> |   1121 | 12_1    | WWBT-HD  |        1 |      10 |      3102 |
> |   1232 | 23_2    | WCVE-CR  |        1 |       9 |      3309 |
> |   1233 | 23_3    | WCVE-DT  |        1 |       9 |      3308 |
> |   1231 | 23_1    | WCVE-HD  |        1 |       9 |      3104 |
> |   1352 | 35_2    | MyTV (W  |        1 |      10 |      3597 |
> |   1353 | 35_3    | CometTV  |        1 |      10 |      3601 |
> |   1351 | 35_1    | Fox-HD   |        1 |      10 |      3599 |
> |   1491 | 49_1    | ION      |        1 |      12 |      3108 |
> |   1571 | 57_1    | WCVW-HD  |        1 |       9 |      3105 |
> |   1651 | 65_1    | WUPV-HD  |        1 |      12 |      3103 |
> |   1652 | 65_2    | Bounce   |        1 |      12 |      3307 |
> |   1653 | 65_3    | Grit     |        1 |      12 |      3311 |
> +--------+---------+----------+----------+---------+-----------+
> 18 rows in set (0.00 sec)
>
>
>
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