[mythtv-commits] Ticket #3153: 1 of 10 channels without audio, the rest work.

[MythTV]

#3153: 1 of 10 channels without audio, the rest work.
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 Reporter:  spikeygg at gmail.com  |        Owner:  danielk
     Type:  defect              |       Status:  new    
 Priority:  minor               |    Milestone:  unknown
Component:  dvb                 |      Version:  0.20   
 Severity:  medium              |   Resolution:         
  Mlocked:  0                   |  
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Comment(by james at thearmstrongs.org):

 I was able to fix my ABC-HD channel recording without audio by just
 reversing the changes in 12439 in my latest copy of svn head. I not get
 audio from the recordings. I did see one item that stuck out in the
 changes that could be my problem and would need feedback from spikey to
 see if it is similar to his. I am not an expert, but looking at the source
 code, one of the new additions was for dvb time information from the
 stream. There is a define in libs/libmythtv/mpeg/mpegtables.h    (revision
 12439):
 @@ -182,7 +182,7 @@
      DVB_SDT_PID   = 0x0011,
      DVB_EIT_PID   = 0x0012,
      DVB_RST_PID   = 0x0013,
 +    DVB_TDT_PID   = 0x0014,

 The DVB_TDT_PID (0x14) happens to be the exact PID id my channel that is
 not working is using for the Audio. Is this related to the problem? Is it
 filtering out the audio because it thinks it is a timecode PID? Here is a
 snip of my recording log showing the pids for video and audio on this
 channel:

  Stream #0 pid(0x11) type(video-mpeg2  0x2)
   Video Descriptor (0x2) length(3)
   Unknown(6) Descriptor (0x6) length(1)
  Stream #1 pid(0x14) type(audio-ac3  0x81)
   Registration Descriptor: 'AC-3' ATSC audio stream A/52
   Audio Stream Descriptor  full_srv(1) sample_rate(48kbps)
 bit_rate(=384kbps, 14)
       bsid(8) bs_mode(0) channels(2/0) Dolby(Not Dolby surround encoded)
       mainID(0)
   ISO-639 Language: code(eng) canonical(eng) eng(English)
   Unknown(6) Descriptor (0x6) length(1)

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Ticket URL: <http://svn.mythtv.org/trac/ticket/3153#comment:2>
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