[mythtv-commits] Ticket #7786: MythTV 0.22 picks wrong PVR-150 audio input

[MythTV]

#7786: MythTV 0.22 picks wrong PVR-150 audio input
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 Reporter:  Guy Delamarter <gdlex001@…>            |       Owner:  ijr 
     Type:  defect                                 |      Status:  new 
 Priority:  major                                  |   Milestone:  0.22
Component:  MythTV - General                       |     Version:  0.22
 Severity:  high                                   |     Mlocked:  0   
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 PVR-150 is set to input (external) composite input, and for the video this
 is clearly set correctly in MythTV: live TV shows video.  But there is no
 sound.

 v4l2-ctl lists three audio inputs for PVR-150.  0 is cable tuner (not used
 in my setup), 1 is line in 1 (Composite), and 2 is line in 2 (internal?).
 The selected input after MythTV sets it is 2.  Using v4l2-ctl to manually
 change card audio to input 1 while live TV is playing recovers the sound
 to go with video!  At this point, exiting and turning live TV on again to
 the PVR-150 again provides the opportunity for MythTV backend to reset
 card audio to input 2 which as before, provides for silent video.

 There doesn't appear to be any way to influence this behavior in
 configuration (i.e. mythtvsetup).  Only selection available is
 to use Composite 1 or Composite 2 (selected composite 1) and that is
 clearly correct for video.

 From v4l2-ctl it appears that the video input for Composite 1 has index 2.
 Perhaps the code error is made under the (incorrect) assumption that the
 audio index should be set the same as the video index.  Since there are
 more video inputs than audio inputs, the correspondence cannot follow in
 that way.  Only a guess...

 This used to work fine under mythtv 0.21.  Upgraded to using latest 0.22
 from rpmfusion repository.

 Note that under this defect, MythTV conspires to make unattended recording
 of TV with audio very difficult.

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Ticket URL: <http://svn.mythtv.org/trac/ticket/7786>
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