Cool Live Captions

Note: Cool Live Captions is experimental and captions may not be 100% accurate.

A free and open source live caption desktop application that converts audio from your microphone or system audio to text in real-time. The speech recognition is powered by april-asr library with ONNX format. All processed on-device using your CPU.

Windows and Linux are currently supported. macOS is coming soon.

Feature

• Dear ImGui GUI framework
• Desktop Audio and Microphone Capture Support
• Autosave transcripts in text file
• Profanity filter

Coming Soon

• More language models
• Model Manager + Automatic update
• Capture from specific applications (depending on OS capabilities)
• macOS support
• Application Updater

Screenshot

Windows 11	Linux GNOME

Quick Start

1. Download the latest release for your platform.
2. Install and launch the app.
3. Download april-english-dev-01110_en.april model from link: https://abb128.github.io/april-asr/models.html
4. Place the model file into your models folder (created on first run or by installer):
   • Windows: %LOCALAPPDATA%/coollivecaptions/models
   • macOS: ~/Library/Application Support/com.batterydie.coollivecaptions/models
   • Linux: ~/.coollivecaptions/models

Download

Grab the latest build on the Releases page.

.EXE is installer for Windows and .DEB is Debian package and .AppImage is portable application format for Linux.

For AppImage file, set executable permission via GUI or commandline before running.

Acknowledgements

This project makes use of a few libraries:

• april-asr - for on-device speech-to-text/speech recognition (License: GPL-3.0, © abb128 and contributors)
• ONNX Runtime - for running ONNX models efficiently (License: MIT, © Microsoft Corporation)
• Dear ImGui - for the GUI framework (License: MIT, © Omar Cornut and contributors)

I would like to thank to abb128 (and contributors of april-asr) for creating april-asr libary.

License

Cool Live Captions is free software licensed under GPL-3.0. See LICENSE for details.