[ATrpms-users] FFmpeg and VOB troubles

[Paulo Cavalcanti]

On 10/26/07, Scott Harris <atrpms at webhounds.net> wrote:
>
> Quoting Jeff volckaert <jvolckaert at gmail.com>:
>
> > I searched the mailing list archives and didn't see anyone mention
> > this problem.  I'm having trouble with FFmpeg and VOB files.  I get
> > the error message "Unsupported codec (id=86020) for input stream #0.1"
> >
> > The FAQ for FFmpeg states:
> > --------------------------------------------------------------
> > 1.8 Why does ffmpeg not decode audio in VOB files?
> >
> > The audio is AC3 (a.k.a. A/52). AC3 decoding is an optional component
> > in ffmpeg as the component that handles AC3 decoding (liba52) is
> > currently released under the GPL. If you have liba52 installed on your
> > system, enable AC3 decoding with ./configure --enable-liba52
> > --enable-gpl. Take care: by enabling AC3, you automatically change the
> > license of libavcodec from LGPL to GPL.
> > --------------------------------------------------------------
> >
> > I installed the ATRPMS liba52_0-0.7.4-7.fc6.at, but that doesn't seem
> > to be used by FFmpeg.
> >
> > I don't want to uninstall the RPM and compile FFmpeg from source since
> > that would mess with my Mythtv install.
> >
> > How can I recompile the ATRPMS FFmpeg with "./configure
> > --enable-liba52 --enable-gpl"?  Was there a reason this was left out
> > of the default FFmpeg RPM?  Can this be made part of the default RPM
> > in the future?
> >
>
> I hate to chime in with the "me too" emails, but me too.
> I was in the middle of ripping and converting a bunch of DVDs when
> I happen to do an ffmpeg upgrade.  Now vob -> avi doesn't work, same
> error.
>
> FWIW, I'm using this command
> ffmpeg -i SIMPSONS_S10_D21-1.vob  -f avi -vcodec mpeg4 -b 800k -g 300
> -bf 2 -acodec mp3 -ab 128k simpsons.avi
>
> I have the same results from the ffmpeg -formats as you as well.




Hi,

checking configure options, we get:

[cascavel:~/redhat/SOURCES/ffmpeg-0.4.9] configure --help | grep a52
  --enable-liba52          enable GPLed liba52 support [default=no]
  --enable-liba52bin       open liba52.so.0 at runtime [default=no]

ATrpms ffmpeg is compiled with --enable-liba52bin.

Therefore, it should work with a52dec-0.7.4-8.fc6.lcg installed (of course,
for FC6).

[cascavel:~/specs] rpm -qf /usr/lib64/liba52.so.0
a52dec-0.7.4-8.fc6.lcg


-- 
Paulo Roma Cavalcanti
LCG - UFRJ
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