[FFmpeg-user] Difference in mp3 to wav conversion?

Hashim Aziz hashaziz at hotmail.com
Tue Apr 2 14:52:13 EEST 2019

So what is it?

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From: ffmpeg-user <ffmpeg-user-bounces at ffmpeg.org> on behalf of Rudolf A. Braun <rab014 at gmail.com>
Sent: Tuesday, April 2, 2019 10:34:08 AM
To: ffmpeg-user at ffmpeg.org
Subject: Re: [FFmpeg-user] Difference in mp3 to wav conversion?

I take it back, it's not ffmpeg.

On Tue, Apr 2, 2019 at 10:14 AM Rudolf A. Braun <rab014 at gmail.com> wrote:

> Hi,
> I work in speech recognition. I first noticed yesterday that I'm getting
> different results than normal when using ffmpeg to convert an audio file
> from mp3 to wav. When I use sox I get the same results as before, so there
> must be some recent change with ffmpeg that is messing things up.
> The command I'm using is `ffmpeg -loglevel error -i $1 -ar 16000 -acodec
> pcm_s16le $2` with the sox equivalent being `sox $1 -t wavpcm -r 16000 -e
> signed -b 16 $2`.
> Would be nice to know what exactly is responsible for the difference.
> Cheers Rudolf


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