
Learning
aeneas
aeneas is a Python/C library and a set of tools to automagically synchronize audio and text (aka forced…
Popularity
★ 2.9k
Last update
July 2026
License / pricing
AGPL-3.0
Category
Learning
What it does
aeneas is a Python/C library and a set of tools to automagically synchronize audio and text (aka forced alignment)
Summary based on the project's own description. The Japanese page has a fuller beginner guide: setup difficulty, what to prepare, and a step-by-step start.
Screenshots & visuals

Before you start
- Setup difficultySome setup needed
- Command lineRequired
- API keyNot required
- Sends data onlineNo
Judged automatically from the project's own metadata. Always confirm on the official page.
aeneas FAQ
- Is aeneas free?
- Yes. It runs on your own machine, so there is no usage-based cost either.
- Do I need to install anything or write code to use aeneas?
- It needs the command line. If you are not comfortable typing commands, expect to get stuck during setup.
- Does aeneas work on a phone?
- No. It needs a computer.
- Can I use aeneas commercially?
- The licence is AGPL-3.0. Using it commercially is fine, but if you distribute something built on it you may be required to release that under the same licence. Keep it internal, or check before distributing.
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