Converting Base64 to MP3 or WAV file

[Maya-Taliaferro]

Hi everyone,

I have an experiment which records audio from a participant's mic utilizing html-audio-response. This plugin records the audio in Base64 format. I was wondering if anyone knows any scripts (python, Matlab or R all ok) and/or programs that can read in Base64 and convert it to an mp3 or wav file? Ideally I'd like to do this for multiple Base64 strings.

Thanks so much!

[Rots]

I ended up using the apprach:

1. programmatically decode base64 stream with R
2. save the resulting bytes as outfile.webm
3. convert to wav ffmpeg -i outfile.webm outfile.wav

also see #1202 (comment) and #796 (reply in thread) for examples