[mythtv] Ticket #1104: multi channel audio support

Denys Dmytriyenko denis at denix.org
Thu Feb 21 06:17:30 UTC 2008


Has anyone seen this issue lately with internal player getting stuck on some DVDs?

-- 
Denys


On Thu, Feb 21, 2008 at 06:11:51AM -0000, MythTV wrote:
> #1104: multi channel audio support
> -------------------------+--------------------------------------------------
>  Reporter:  Mark Spieth  |        Owner:  danielk
>      Type:  enhancement  |       Status:  closed 
>  Priority:  minor        |    Milestone:  0.21   
> Component:  mythtv       |      Version:  head   
>  Severity:  medium       |   Resolution:  fixed  
>   Mlocked:  0            |  
> -------------------------+--------------------------------------------------
> 
> Comment(by Denys Dmytriyenko <denis at denix.org>):
> 
>  Replying to [comment:49 Tyson Harding <tharding at cs.utah.edu>]:
>  > I couldn't get this to play DVDs with "Extra Audio Buffering" enabled.
>  Six channel audio would not work, the frontend would get stuck in a loop
>  with a black screen. The logs showed
>  > {{{
>  > [ac3 @ 0xb7330ba8] buffer 192000 too small
>  > }}}
>  > printed repeatedly and the frontend would not respond.
>  > I was able to fix the problem by either turning off "Extra Audio
>  Buffering", or changing the AVCODEC_MAX_AUDIO_FRAME_SIZE value from 192000
>  to 384000, so now avcodec.h has
>  > {{{
>  > #define AVCODEC_MAX_AUDIO_FRAME_SIZE 384000 // 2 second of 48khz 32bit
>  audio
>  > }}}
> 
>  I'm now experiencing this same issue with latest SVN playing some/most
>  DVDs. None of the suggested fixes work for me - Extra Audio buffering is
>  off and FRAME_SIZE increased to 384000.
> 
>  I see this (I believe "audio stream changed" is the cause):
> 
>  {{{
>  [ac3 @ 0xb7392688]buffer 192000 too small
>  audio stream changed
>  NVP: Disabling Audio, params(0,-1,48000)
>  [ac3 @ 0xb7392688]buffer 192000 too small
>  [ac3 @ 0xb7392688]buffer 192000 too small
>  [ac3 @ 0xb7392688]buffer 192000 too small
>  ...
>  }}}
> 
> -- 
> Ticket URL: <http://svn.mythtv.org/trac/ticket/1104#comment:111>
> MythTV <http://svn.mythtv.org/trac>
> MythTV


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