[mythtv-commits] Ticket #5989: Dvd playback problem - PCM DVD unsupported sample depth

MythTV mythtv at cvs.mythtv.org
Tue Jul 7 23:23:02 UTC 2009

#5989: Dvd playback problem - PCM DVD unsupported sample depth
 Reporter:  wstewart at hgrace.com  |        Owner:  skamithi
     Type:  defect               |       Status:  assigned
 Priority:  minor                |    Milestone:  unknown 
Component:  mythtv               |      Version:  head    
 Severity:  medium               |   Resolution:          
  Mlocked:  0                    |  

Comment(by skamithi):

 the problem is that a new PCM format was introduced in ffmpeg, PCM_DVD. on
 some dvds, this PCM format is seen in the first dvd cell but no where
 else. mythtv is currently not able to switch to the PCM_S16E format that
 is used by the rest of the dvd, so incorrectly decodes  PCM_S16E audio as
 PCM_DVD audio. It doesn't detect the change from pcm_dvd to pcm_s16e as a
 stream change, so doesn't close the codec and restart the codec using the
 pcm_s16e format.

 The latest ffmpeg sync should help somewhat with this problem, on some
 dvds, as the pcm_dvd code in ffmpeg was fixed to better handle audio that
 should be using pcm_dvd format.  and i was waiting for this to happen
 before i look further into a fix for this issue.

 Right now i cannot look into this issue.

 if someone wants to take a stab at this problem and wants some tips on
 where to start,  email me and i can offer my 2c on the matter.

Ticket URL: <http://svn.mythtv.org/trac/ticket/5989#comment:10>
MythTV <http://www.mythtv.org/>

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