Difference in mp3 to wav conversion?

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Difference in mp3 to wav conversion?

Rudolf A. Braun
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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Re: Difference in mp3 to wav conversion?

Rudolf A. Braun
I take it back, it's not ffmpeg.

On Tue, Apr 2, 2019 at 10:14 AM Rudolf A. Braun <[hidden email]> 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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*Ark Research Ltd*
typefree.io
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Re: Difference in mp3 to wav conversion?

Hashim Aziz
So what is it?

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________________________________
From: ffmpeg-user <[hidden email]> on behalf of Rudolf A. Braun <[hidden email]>
Sent: Tuesday, April 2, 2019 10:34:08 AM
To: [hidden email]
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 <[hidden email]> 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
>


--

*Ark Research Ltd*
typefree.io
_______________________________________________
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[hidden email]
https://ffmpeg.org/mailman/listinfo/ffmpeg-user

To unsubscribe, visit link above, or email
[hidden email] with subject "unsubscribe".
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[hidden email]
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[hidden email] with subject "unsubscribe".