resampling mp3 files at a higher bitrate

[Tim]

On Sat, 2010-07-31 at 21:31 -0700, JD wrote:
> I tried to re-sample an MP3 file from 64kbps to 320kbps :
>  
> ffmpeg -i file.mp3 -ac 2 -b 320k new-file.mp3
>  
> but the resulting file always comes out at 64kbps.

You have a syntax error

 -b for video bitrate setting
 -ab for audio bitrate setting

What are you trying to gain?  You can't make a lossy MPEG better by
recompressing it at a higher bitrate.  It's actually going to get worse,
since it's going to get decoded, then another lossy recompression is
going to happen.

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