[mythtv-commits] Ticket #7563: Upmixer uses wrong sample rate for IEC958

[MythTV]

#7563: Upmixer uses wrong sample rate for IEC958
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 Reporter:  anonymous              |        Owner:  jyavenard
     Type:  defect                 |       Status:  closed   
 Priority:  minor                  |    Milestone:  unknown  
Component:  MythTV - Audio Output  |      Version:  head     
 Severity:  medium                 |   Resolution:  invalid  
  Mlocked:  0                      |  
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Comment(by anonymous):

 Replying to [comment:1 jyavenard]:
 > Alsa reports 44100 as being available ; and as your content is 44.1kHz,
 that's what it tried using... AC3 doesn't have to be 48kHz.

 Further investigation suggests that my sound card does not allow anything
 other than 48k when put into non-audio mode.

 > So here myth doesn't use the *wrong* sample rate. It uses what your card
 reports as being available.
 > Yet, for some reasons ALSA uses 44.1kHz, you get 48kHz in return.

 My card is reporting its supported /audio/ rates, which are different from
 its suppored /non-audio/ rate.  Myth just assumes the two are identical.

 > In any cases, this is not a mythtv issue

 It /is/ a mythtv issue because you make the incorrect assumption that the
 sound card driver supports the same sample rates regardless of audio or
 non-audio mode.

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Ticket URL: <http://svn.mythtv.org/trac/ticket/7563#comment:2>
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