[mythtv-commits] Ticket #3857: Mythfrontend import dvd issues

[MythTV]

#3857: Mythfrontend  import dvd issues
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 Reporter:  anonymous  |        Owner:  awithers
     Type:  defect     |       Status:  reopened
 Priority:  minor      |    Milestone:  0.21    
Component:  mythdvd    |      Version:  head    
 Severity:  medium     |   Resolution:          
  Mlocked:  0          |  
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Comment(by anonymous):

 The actual DVD plays back good in WinDVD8 on my pc, and the integrated
 player built into mythfrontend. So the DVD is not damaged.
 I ripped the files off in perfect mode, and those work, but just by
 looking a bunch of VOB files I can't tell which one I am supposed to be
 playing nor in what order.  Which of course is what the menu is supposed
 to do.

 I don't know if DVD I am trying to play has slightly different encryption
 method or what, but when you try and play the ISO version the output is
 useless. One single frame is displayed for over 2 minutes at a time, and
 the audio continues.

 I (IMHO) believe the problem is ISO contents were never decrypted, and the
 decryption keys are stored in a "Sub channel" on the DVD. I have no idea
 how or where this sub channel exists, but I know a sub channel is a option
 component.  Several Windows based rippers have demonstrated there
 existance by pull data from them.

 A regular ISO rip does not grab thia "sub channel" data so the DVD player
 can't decode it, because the decryption key are not copied.  (IMHO)  this
 is why my DVD playback is bad.

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Ticket URL: <http://svn.mythtv.org/trac/ticket/3857#comment:4>
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