[mythtv] A/V Bug in CVS from 12:00am 3/27 to 12:00am 3/29

[John Pullan]

<snip> 
> Greg Grotsky wrote:
> 
> >I've been trying to narrow down the issue with audio jitter and
> >slow-mo video.  I've determined that it was broken in CVS sometime
> >between 3/27/2005 and 3/29/2005.  I checked out CVS MythTV from
> >3/27/2005 and it works for all channels, when I check it out from
> >3/29/2005 (because 3/28 backend segfaults when entering livetv) two
> >channels break.  The broken channels give me studdering audio (with
> >occasional pops and clicks) and the video is very slow.  When I tune
> >to a broken channel on the frontend I get lots of these:
> >
> >2005-04-15 13:01:33.664 Audio buffer overflow, audio data lost!
> >2005-04-15 13:01:33.668 Audio buffer overflow, audio data lost!
> >2005-04-15 13:01:33.668 Audio buffer overflow, audio data lost!
> >
> >And on the backend I get lots of these:
> >
> >2005-04-15 13:01:35.624 DVB#0 WARNING - Uncorrectable error in packet, dropped.
> >2005-04-15 13:01:35.624 DVB#0 WARNING - Uncorrectable error in packet, dropped.
> >2005-04-15 13:01:35.624 DVB#0 WARNING - Uncorrectable error in packet, dropped.
> >
> >Both channels work fine on CVS from 3/27 and earlier.  I looked
> >through the CVS commits from 3/27-3/29 and I'm not sure but these (2)
> >are the most relevant commits that I could find.
> >
> >----------------------------------------------------------------------------
> >Changes committed by taylor on Sun Mar 27 18:18:56 2005
> >
> >Modified Files:
> >   in mythtv/libs/libmythtv:
> >        dbcheck.cpp siparser.cpp siscan.cpp sitypes.cpp sitypes.h
> >Log Message:
> >Addition of Torbjorn Jansson's EitFixUp4 code changes that were missed
> >in previous
> >DVB patch changes.  One more entry added to dtv_privatetypes so one more
> >schema rev.
> >----------------------------------------------------------------------------
> >----------------------------------------------------------------------------
> >Changes committed by cpinkham on Mon Mar 28 05:01:39 2005
> >
> >Modified Files:
> >   in mythtv/libs/libmythtv:
> >        NuppelVideoPlayer.cpp NuppelVideoPlayer.h avformatdecoder.cpp
> >        decoderbase.cpp decoderbase.h
> >   in mythtv/programs/mythtranscode:
> >        transcode.cpp
> >Log Message:
> >
> >Fix transcoding bug related to AC3 passthrough.  Previously if you had AC3
> >passthrough turned on and tried to transcode an AC3 recording, the audio
> >would not be properly transcoded.  This fixes the audio when AC3 passthrough
> >is enabled.
> >----------------------------------------------------------------------------
> >
> >I am using DVB with a pcHDTV HD-3000 card, on 32-bit Debian with a
> >2.6.12-rc1 kernel (with built-in DVB), I am also using /dev/dsp for
> >audio.  I used the same configure script with all versions of the CVS
> >code that I checked out, and I dropped my database to guarantee
> >identical settings.  Here is my output from configure that I am using:
>
<snip> 

Could you let us know what recorder options you are using ?
e.g PS or TS mode how many audio tracks etc ?
Thanks
-- 
John