Aeneas

Visit Tool

aeneas is an Open Source Content & Design tool that automagically synchronizes audio and text, also known as forced alignment. It is a Python/C library and a set of tools for generating synchronization maps between text fragments and audio files.

Claim this tool

1View

At a glance

Pricing

Open Source

Free tier

Yes

API

Yes

Skill level

Technical

About

What is aeneas?

aeneas is a Python/C library and a set of tools designed for automatic audio and text synchronization, a process known as forced alignment. It takes a text file and an audio file containing the narration of that text, then generates a synchronization map indicating the time interval for each text fragment within the audio. This tool supports various input text formats, including plain, parsed, subtitles, and XML, and can handle all audio file formats readable by FFmpeg. The output synchronization maps can be generated in multiple formats suitable for research, digital publishing (EPUB 3), closed captioning (SRT, WebVTT), and web applications (JSON). aeneas is confirmed to work on 38 languages and includes features like MFCC and DTW computation via Python C extensions for faster processing, and wrappers for several TTS engines.

Best used for

Ideal for content creators who need to automatically generate synchronization maps between audio and text, create synchronized text for audiobooks, and produce closed captions or subtitles. Especially valuable for those working with multiple languages and requiring various output formats for different applications.

Common actions

synchronize audio text

generate subtitles

create audiobooks

align spoken content

face swapping"AI Agents"github copilotlow-code/no-codeautomated workflowopen-sourceworkflowscollaborationdeepfake

Capabilities

Key features

Automate audio-text synchronization
Support multiple text formats
Support multiple audio formats
Output various sync map formats
Works with 38 languages
Integrate TTS engines
Batch process tasks

Target Audience

content creatorpodcaster

Integrations

Not yet documented

Pricing & Plans

Open Source

Free

FAQs

What are the system requirements for running aeneas?

aeneas requires a reasonably recent machine (recommended 4 GB RAM, 2 GHz 64bit CPU), Python 2.7 or 3.5+, FFmpeg, eSpeak, and specific Python packages like BeautifulSoup4, lxml, and numpy. Python headers are recommended for compiling C/C++ extensions, and a UTF-8 supporting shell is also advised.

What output formats does aeneas support for synchronization maps?

aeneas can output synchronization maps in various formats including AUD, CSV, EAF, JSON, SMIL for EPUB 3, SRT, SSV, SUB, TEXTGRID, TSV, TTML, TXT, VTT, and XML. These formats cater to different applications such as research, digital publishing, and closed captioning.

Can aeneas handle word-level alignment, and how can I improve its quality?

While not primarily designed for word-level alignment, aeneas offers options to improve quality, such as using multilevel text, MFCC nonspeech masking, and better TTS engines like Festival or AWS/Nuance TTS API. The `--presets-word` switch can be used with the command-line tool for this purpose.

Trending

Subcategories trending in Content & Design

Image Generation AI Writing Assistants Video Generation Photo Editing Graphic Design Video Editing

Trending

Explore

Browse AI tools by category

Content & Design Productivity & Business Coding & Development AI Agents & Automation Research & Education Wellness & Lifestyle Career Development Marketing & Growth Data & Analytics Customer Support & CX Finance E-commerce