[mythtv-commits] Ticket #6395: AVFormatDecoder Language/codec detection improvements

[MythTV]

#6395: AVFormatDecoder Language/codec detection improvements
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 Reporter:  robert.mcnamara at gmail.com  |       Owner:  ijr    
     Type:  patch                      |      Status:  new    
 Priority:  minor                      |   Milestone:  unknown
Component:  MythTV - Video Playback    |     Version:  head   
 Severity:  medium                     |     Mlocked:  0      
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 Two small improvements for AVFormatDecoder/The internal player.

 The first improvement pertains to HD-DVD and Blu Ray support.  TrueHD
 audio is a mandatory primary audio format on HD-DVD (although not all
 disks include it as required).  It's a non-mandatory codec on Blu-ray.
 That said, it is guaranteed to be more likely to be the primary audio
 track than DTS or AC3 when present.  This adds a preference for TrueHD
 over those two codecs.  This makes the audio track selection for all my
 HD-DVD rips correct (Trunk has some other issues with this content but
 those appear to be resolved in ffmpeg SVN so the next resync should fix
 them).

 Note that in FFMpeg trunk the MLP codec has been split out into two
 codecs, CODEC_ID_MLP and CODEC_ID_TRUEHD.  This patch works with current
 trunk but on the next ffmpeg sync it will need to be changed to
 CODEC_ID_TRUEHD.

 The second improvement pertains to Language selection.  Myth attempts to
 select an audio track first by language, then without.  Regrettably, the
 setting for which language it chooses is hidden in appearance and called
 "Guide Language Preference" #1 and #1.  It doesn't even indicate that it
 pertains to audio track selection.  A complaint from a user today got me
 thinking about this.

 As a solution, I have changed the primary selection method to first try a
 track matching the Frontend language, then to fall back to the guide
 language preferences.  I think this is much more intuitive and saves
 having to shuffle those settings around for no good reason.

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Ticket URL: <http://svn.mythtv.org/trac/ticket/6395>
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