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

[MythTV]

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

 On this video it is initially scanning the streams and interpreting them
 all correctly and finding the correct codecs. Then, before the first frame
 is played, it gets a "streams changed" notification. Upon scanning the
 streams again, they are now all unknown with codec NONE. The only reason
 the Video is actually played is because there is code that says for
 unknown video assume MPEG2 and start playing. This video is not MPEG2 but
 it seems that ffmpeg manages to sort that out and play it. There is no
 such default action for audio or subtitles so they are not played.

 Sometime later on the code seems to realize the type of streams, but by
 then it is too late, MythTV already has them as unknown.

 It seems to be an ffmpeg bug with scanning the streams after a "streams
 changed" notification.

 I tried a few tweaks trying to get it to rescan the streams but with no
 success, there are complex interactions involved and all I succeeded in
 doing was causing a core dump.

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Ticket URL: <https://code.mythtv.org/trac/ticket/13025#comment:10>
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