How to decode AAC (.m4a) audio files into WAV?
Problem
How would you convert (decode) AAC files into WAV format? (Or, if you prefer, how to decode & re-encode them into MP3 or Ogg Vorbis? But WAV is sufficient as I already have good tools for WAV ➔ MP3/Ogg conversion.) I'm mostly interested in Mac or Linux solutions, but feel free to mention Windows ones too. (Use case: I have some voice memos ("Apple lossless audio file"), recorded with iPhone, that I'd like to share in a format that's more common than AAC.)
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1 Fix
Fix for: How to decode AAC (.m4a) audio files into WAV?
On Ubuntu, I use avconv on the command line: You can also use FFmpeg with the same syntax, simply replacing with . This can do every M4A in a directory, combined with a for loop: Linux: Windows (directly in the command prompt): Windows (in a batch file): If you want a GUI, you may consider WinFF, which is a GUI for FFmpeg.
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