Ferrocast Install

M4A to AIFF on your Mac, without uploading

Convert M4A files to AIFF with Ferrocast. The conversion runs on your Mac and the result is saved next to the original.

How to convert M4A to AIFF

  1. Install Ferrocast (below).
  2. Drag your M4A file, or select it in the launcher.
  3. Tap ⇧ for the conversion wheel (or press ⌥↵ on a file result).
  4. Release over AIFF. The copy is saved beside the original.

What this pair needs

No extra tool needed: this pair runs with the tools that ship with macOS.

Install Ferrocast

brew tap drumst0ck/ferrocast
brew install drumst0ck/ferrocast/ferrocast
ln -sfn "$(brew --prefix)/opt/ferrocast/Ferrocast.app" \
  /Applications/Ferrocast.app
open /Applications/Ferrocast.app

Free, open source (MIT), Apple Silicon only. Install guide · All conversions in the docs

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Questions

Is my M4A file uploaded anywhere?

No. Conversions run on your Mac; nothing is uploaded.

Will it overwrite my original?

No. The result is written next to the original with the same name and the new extension. If that name is taken it adds 2, 3 and so on.

Do I need to install anything besides Ferrocast?

No extra tool needed: this pair runs with the tools that ship with macOS.