[mythtv-users] Sound a second behind video ( FFPLAY/INTERNAL PLAYER ISSUE? )

[Mark Hutchinson]

Kevin Kuphal wrote:
> On Wed, Mar 12, 2008 at 7:44 PM, Mark Hutchinson <mark at onnow.net 
> <mailto:mark at onnow.net>> wrote:
>
>     On 3/12/08, Kevin Kuphal <kkuphal at gmail.com
>     <mailto:kkuphal at gmail.com>> wrote:
>     > On Wed, Mar 12, 2008 at 5:58 PM, Mark Hutchinson <mark at onnow.net
>     <mailto:mark at onnow.net>> wrote:
>     >
>     > >
>     > >
>     > > mplayer is fine with the file.
>     > > The Internal player audio is off.
>     > > Please, try it for yourself.
>     > > It starts with 3 commercials. The third one is two kids
>     talking. It
>     > > is obvious that the audio is off with the internal player.
>     >
>     >
>     > Did you try it with ffplay?
>     >
>     > Kevin
>     >
>     I just did.  EXACTLY the same audio delay symptoms.
>     Audio delay.
>
>     Here is the full play output.
>     So what does this indicate?  ffplay issue?
>     I am using ATRPMS lastest .21 rpms BTW.
>
>     [mythtv at hdtest ~]$ ffplay /video/syncprob.mpg
>     FFplay version SVN-r12135, Copyright (c) 2003-2008 Fabrice
>     Bellard, et al.
>      configuration: --prefix=/usr --libdir=/usr/lib64
>     --shlibdir=/usr/lib64 --mandir=/usr/share/man --enable-shared
>     --enable-gpl --enable-pp --enable-swscaler --enable-pthreads
>     --enable-x11grab --enable-liba52 --enable-liba52bin --disable-avisynth
>     --disable-libamr-nb --disable-libamr-wb --enable-libdc1394
>     --enable-libfaac --enable-libfaad --enable-libfaadbin --enable-libgsm
>     --enable-libmp3lame --enable-libtheora --enable-libvorbis
>     --enable-libx264 --enable-libxvid --extra-cflags=-O2 -g -pipe -Wall
>     -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector
>     --param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC --disable-strip
>      libavutil version: 49.6.0
>      libavcodec version: 51.50.1
>      libavformat version: 52.7.0
>      libavdevice version: 52.0.0
>      built on Feb 18 2008 19:56:42, gcc: 4.1.2 20070925 (Red Hat 4.1.2-33)
>     No accelerated IMDCT transform found
>
>
> This indicates that this is what is called an "upstream" problem in 
> that the bug lies within the ffmpeg libraries that MythTV utilizes 
> inside of its internal player.  The FFMPEG project does have its own 
> mailing lists and you can try to also submit your sample to them with 
> a bug report about the audio sync using ffplay.  I think there is also 
> a way to tell mplayer to use the ffmpeg codec/libraries during 
> playback that might be beneficial to you in that you can probably get 
> more verbose information out of mplayer to include with your bug report.
>  
> Kevin
I have submitted this bug to ffmpeg.  I would thing this would start to 
effect other users as well.  I hope this can get resolved soon.