[LAD] Resampling: SOX vs FFmpeg

Paul Davis paul at linuxaudiosystems.com
Thu May 23 14:39:54 CEST 2019

On Thu, May 23, 2019 at 2:59 AM Louigi Verona <louigi.verona at gmail.com>

> Hey everyone!
> I need advice on resampling.
> To give you context, I am working at SoundCloud, and one of the current
> projects is to refactor the transcoding pipeline. And proper resampling
> tools is a question that keeps coming up.
> One of the pipelines takes the uploaded file and transcodes it into an
> mp3. The general idea is to convert the original file to wav, resample it
> to 44100, and then finally convert it to mp3 using LAME.
> There are several questions here.
> 1. Which tool to use for transcoding. Should it be SoX, or FFmpeg, or
> something else? A lot of the info out there seems to favor SoX, but a lot
> of that info is pretty old.

In terms of quality for resampling, this is the canonical information
source: http://src.infinitewave.ca/
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