[mythtv-commits] Ticket #2813: 32khz AC3 tracks are bad for my receiver

[MythTV]

#2813: 32khz AC3 tracks are bad for my receiver
----------------------------+-----------------------------------------------
 Reporter:  ylee at pobox.com  |       Owner:  ijr    
     Type:  defect          |      Status:  new    
 Priority:  minor           |   Milestone:  unknown
Component:  mythtv          |     Version:  0.20   
 Severity:  medium          |  
----------------------------+-----------------------------------------------
 I have the same issue that Rob Baumstark and others report at http://www
 .gossamer-threads.com/lists/mythtv/users/207600#207600 when playing back
 certain Firewire recordings (ones with 32khz AC3 tracks) from certain
 basic-cable channels with my Turtle Beach Riviera's S/PDIF output to a
 receiver. As Rob notes, both audio and video are "chipmunk"-like sped up,
 along with occasional loud pops that sometimes cause my receiver to shut
 down (presumably to protect the speakers from physical damage).

 As Rob writes:

  I'm pretty sure at this point that what I need is MythTV to check the
 sample-rate of AC3 streams before it attempts to pass them through, and
 automatically disable AC3 passthrough for streams that are not 48khz. I
 have yet to see an AC3 stream thats not at 48khz and that also contains
 more than 2 channels, so there would be no loss of surround-sound with
 such an option.

 In the meanwhile, a workaround is to alter the playback speed to something
 other than 100%; this forces MythTV to remix the AC3 track to 48khz.

-- 
Ticket URL: <http://svn.mythtv.org/trac/ticket/2813>
MythTV <http://www.mythtv.org/>
MythTV