Audiblez

Canonical version: Audiblez.

Audiblez is an open-source tool that converts EPUB e-books into M4B audiobooks using AI text-to-speech. You give it an EPUB, pick a voice and language, and it generates chapter-by-chapter audio combined into a single audiobook file.

Key points

• TTS engine — Kokoro-82M, a compact (82M-param) text-to-speech model with natural-sounding output, trained on <100h of audio (Apache-licensed).
• Pipeline — integrates FFmpeg (FFmpeg) for audio processing and espeak-ng for text analysis; outputs per-chapter WAV merged into M4B.
• Languages — English, Spanish, French, Hindi, Italian, Japanese, Portuguese, Mandarin.
• Interfaces — CLI and a GUI (audiblez-ui); interactive chapter selection; variable speed (0.5–2.0x).
• Performance — GPU/CUDA accelerated; ~5 min for a ~160k-char novel on a Colab T4, ~1h on an M2 MacBook CPU.
• License — MIT.

A self-hosted, local-first way to turn your e-book library into audiobooks without a subscription.

References

• Repository: https://github.com/santinic/audiblez

Related

• FFmpeg

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