[mythtv] [mythtv-commits] Ticket #4925: Title: internal dvd player: mytharchive mp2 audio playback issues

[John Pilkington]

MythTV wrote:
> #4925: Title: internal dvd player: mytharchive mp2  audio playback issues
> ----------------------+-----------------------------------------------------
>  Reporter:  skamithi  |       Owner:  ijr       
>      Type:  defect    |      Status:  new       
>  Priority:  minor     |   Milestone:  unknown   
> Component:  mythtv    |     Version:  0.21-fixes
>  Severity:  medium    |     Mlocked:  0         
> ----------------------+-----------------------------------------------------
>  This issue was identified by John Pilkington and posted in #2797.
> 
>  if I issue ffmpeg -i on a mytharchive dvd I created about 1 year ago i get
> 
>  {{{Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 720x576, 9000 kb/s,
>  25.00 fps(r)}}}
>    {{{Stream #0.1[0x80]: Audio: liba52, 48000 Hz, stereo, 448 kb/s}}}
>    {{{Stream #0.2[0x1c0]: Audio: mp2 }}}
> 
>  The 2nd audio stream has no sample rate info. I wonder if this is a ffmpeg
>  bug ?
> 

I just looked at the ffmpeg -i output from a renamed but otherwise 
unprocessed recording made today from the UKTV History channel.  That 
claims to have found an mp3 track, but again no data rate is given.

Input #0, mpegts, from '3012_20080311115900.mpg0':
   Duration: 00:34:53.6, start: 1676.042556, bitrate: 2959 kb/s
   Program 1
     Stream #0.0[0x12d]: Video: mpeg2video, yuv420p, 720x576 [PAR 64:45 
DAR 16:9], 15000 kb/s, 25.00 tb(r)
     Stream #0.1[0x12e](eng): Audio: mp2, 48000 Hz, stereo, 192 kb/s
     Stream #0.2[0x12f](eng): Subtitle: dvbsub
     Stream #0.3[0x130](eng): Audio: mp3
Must supply at least one output file

Mythtranscode and Mytharchive haven't been giving any trouble since I 
started preprocessing by stripping off the Audio Description track; 
personally I find it difficult to imagine that, as it is usually done, 
it could give anyone much benefit, but there is currently an advertising 
campaign to raise awareness of it.  I also strip off the dvbsub track, 
although I would sometimes prefer to keep it.

Currently running 0.21 release, ffmpeg 0.4.9-26_r12135.el5