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.