m4Bookmaker

Desktop app that converts audio folders into properly chaptered M4B audiobooks

Desktopfree

m4Bookmaker is a free, open-source desktop app and CLI that converts a folder of MP3 or other audio files into a clean, properly chaptered M4B audiobook in seconds, with automatic chapter detection, an inline chapter editor, automatic cover art, and automatic repair of corrupted audio files. It runs fully locally, never uploads audio, and can also edit existing M4Bs without re-encoding. It's for people who want to turn their own audio recordings, lectures, or converted files into a real, portable, chaptered audiobook they own outright, without paying for an audiobook-conversion service.

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