Converting ulaw to VBR mp3

Lars Rasmussen lars.rasmussen at gmail.com
Wed Mar 16 15:52:38 MST 2005


On Wed, 16 Mar 2005 15:46:36 -0700, Lars Rasmussen
<lars.rasmussen at gmail.com> wrote:
> On Wed, 16 Mar 2005 15:15:51 -0700, Hans Fugal <hans at fugal.net> wrote:
> > On Wed, 16 Mar 2005 at 15:08 -0700, Lars Rasmussen wrote:
> > > I have several files I need to convert from ulaw to VBR mp3.
> > You are of course welcome to use mplayer if you like, but I'd do this
> > with sox.
> >
> > sox foo.wav <options to get it into the format lame wants> temp.wav
> > lame --r3mix temp.wav foo.mp3
> >
> > Lame may even take a wave on stdin and sox could output to stdout, so
> > you could pipe them together without the temporary file. That's not
> > going to make as much difference as using sox instead of mplayer, I'm
> > guessing.
> 
> I've been unable to get sox to work with ulaw - I tried sox first.
> 
> 'sox: wave header missing FmtExt chunk'

sox produces a .wav file that lame can't use:

'Warning: corrupt or unsupported WAVE format'
 
-- 
Lars



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