[MEncoder-users] re-encoding avi to normalise sounds (and turn into 5.1)

[Alex Samad]

On Mon, Jan 07, 2008 at 02:02:31AM -0500, Rich Felker wrote:
> On Mon, Jan 07, 2008 at 07:27:42AM +0100, Jiří Heryán wrote:
> > Alex Samad píše v Ne 06. 01. 2008 v 16:23 +1100:
> > > > > I do my work
> > > > >  mencoder a.avi -o b.avi -ovc copy -oac lavc -lavcopts acodec=ac3 -af 
> > > > > volnorm=1,surround=15,center,sub -channels 6
> > > > > 
> > > > > it finished okay, but when I play it, the sound volume has increased, but when 
> > > > > I try to skip ahead or backwards the sounds starts from the beginning
> > > > > 
> > Mencoder is IMHO broken,
> 
> This is true.
> 
> > probably for better purity of the code (see
> 
> This is utter nonsense. Saying "purity of the code" about MEncoder is
> like a Catholic prostitute saying she doesn't use condoms for the sake
> of her purity...
> 
> > endless discusions about hacks in AVI few years ago). It is stupid,
> > because libavcodec does not contain audio codec compatible with default
> > container (Congratulations boys, good work!).
> 
> Huh? Encoding AC3 with lavc and storing it in AVI should work just
> fine. If not it's a bug, and I'm sure everyone would be happy if you
> would track it down and explain what's happening (e.g. what incorrect
> values are written to headers or what incorrect framing is used,
> etc...)
the ac3 encoding is I think working okay, when you listen to the avi from 
beginning to end it sounds okay, they way I fix it is with avifix, I presume I 
could also extract the audio track and then re mux it back in

> 
> Rich
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