[mythtv-commits] Ticket #13025: Regression: No sound for some HD recordings in recent master

MythTV noreply at mythtv.org
Tue Apr 18 07:02:48 UTC 2017


#13025: Regression: No sound for some HD recordings in recent master
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 Reporter:  dag@…                  |          Owner:  pbennett
     Type:  Bug Report - General   |         Status:  closed
 Priority:  major                  |      Milestone:  29.0
Component:  MythTV - Audio Output  |        Version:  Master Head
 Severity:  medium                 |     Resolution:  fixed
 Keywords:                         |  Ticket locked:  0
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Comment (by dekarl):

 Replying to [comment:16 J.Pilk@…]:
 > BBC Four (SD) is a part-time channel, and the News is its first item.
 My recordings have a 2-minute pre-roll, so the possibility of bad
 behaviour clearly exists.  Somehow, ISTR, my earlier version avoided it.
 >
 > I found that I had sound and picture in the editor, and MythDVBcut has
 created a good copy, so I'm not much worried.  There are obvious
 workarounds.

 It all depends on how they fiddle with SDT/PMT when stopping/starting the
 service.
 The service should be signalled as present, but not running, when this
 recording starts. Then on top of the hour it should switch to running in
 the SDT.

 I'm not sure what the PMT is supposed to contain while the service is not
 running. But if we record everything on PMT update / stream start that is
 good and issues can be fixed after the recording was made.


 Your description sounds as if the stream may be present but not running,
 too. So there is no addition of a stream and no automatic stream selection
 is kicked when the service starts. Can you verify that the audio can be
 selected by manually cycling through the audio streams without fiddling
 with the file? (A test file would be nice to add to the collecting, too)

--
Ticket URL: <https://code.mythtv.org/trac/ticket/13025#comment:17>
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