[mythtv-users] eeeek something broke on ffmpeg and associated programs

Stephen Kitchener stephen at g6dzj.demon.co.uk
Tue Apr 24 21:52:02 UTC 2007


On Tuesday 24 Apr 2007 11:31, Paul Harrison wrote:

Hi Paul,

I did a yum update today and along with the rpms listed below, were the  
mythtv rpms. So I thought that the problem had been fixed, but no I still get 
the same error,,,

You said that I need to change '-ab 192'  to '-ab 192k'. Where would I do this 
please....Do I need to change it in more than one place ?

Thanks

> Stephen Kitchener wrote:
> > Hi List,
> >
> > I wonder if someone has seen the following......
> >
> > The rpms from Atrpms for
> >
> > libavutil49
> > libavcodec51
> > libavformat51
> > libswscale0
> > libpostproc51
> > ffmpeg
> >
> > have twice been updated, the latest today,  4.9.21 and 4.9.20,
> >
> > I now get the error
> >
> > 2007-04-23 20:16:02 Encoding audio to ac3
> > 2007-04-23 20:16:03
> > ************************************************************
> > 2007-04-23 20:16:03 ERROR: Failed while running ffmpeg to re-encode the
> > audio to ac3
> > Command was ffmpeg -v 0 -y -i '/home/mythtv/work/1/stream0.mp2' -f ac3
> > -ab 192 -ar 48000 '/home/mythtv/work/1/stream0.ac3'
> > 2007-04-23 20:16:03
> > ************************************************************
> > 2007-04-23 20:16:03
> > 2007-04-23 20:16:05 Terminated
> >
> > I am assuming that the new-er rpms are responsible for this
> >
> > I think someone else reported that transcode was broken, and that was
> > updated the first time that ffmpeg was updated (over the last couple of
> > days), it mighht be relevent as when I try to remove the newer rpms for
> > ffmpeg and co, rpm reports that transcode is a dependence.
>
> ffmpeg have changed the meaning of the audio bit rate parameter (-ab) to
> mean bits/sec and not Kbits/sec so in the example above you need to
> change '-ab 192'  to '-ab 192k'.
>
> I've already updated the encoding profiles to the new format  in svn
> trunk and fixes but forgot about  those instances in the script where it
> is used.
>
> Paul H.
>
>
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