ExtormSub: Real-Time AI Subtitles for Windows

Introduction

ExtormSub is a Windows application that adds real-time subtitles to any audio playing on your computer. Whether you are watching a movie, playing a video game, attending a meeting, or streaming content on YouTube, this tool displays what is being said directly on your screen. It uses artificial intelligence to listen to the audio and instantly write down the words. The subtitles appear in a transparent window that sits on top of your other programs, so you can keep using your software while reading along.

Benefits

ExtormSub offers several key advantages for users who want to understand audio content better. First, it supports both system audio and microphone input, meaning it can transcribe anything playing on your PC or what you are speaking directly. Second, it provides translation capabilities. By default, it translates English lines into Persian. Users can also connect it to various AI services like OpenAI or DeepSeek for broader language support. For those who prefer privacy, the app includes a free offline option using LibreTranslate, which keeps all data on your computer and never sends it to the internet. Third, the software is designed for performance. It can use your graphics card for faster processing or fall back to your CPU if needed. Finally, the interface is flexible. You can drag, resize, and position the subtitle window exactly where you want it on your screen.

Use Cases

This tool is useful in many different situations. Students can use it to follow along with educational videos or lectures in a language they are learning. Gamers can read subtitles in games that do not have built-in text options. Professionals can use it during online meetings to ensure they do not miss any important points. It also works well for watching movies or TV shows with friends who speak a different language. The application runs quietly in the system tray, so it does not distract from your main activity. Users simply press a keyboard shortcut to turn the subtitles on or off, making it easy to start and stop whenever needed.

Pricing

ExtormSub is available as a free, open-source project hosted on GitHub. There are no subscription fees or hidden costs to download and install the application. Users can choose between free offline translation or paid API services if they wish to support those providers.

Vibes

The project has a small but dedicated community on GitHub. While the number of stars is currently low, the developers have focused on creating a robust tool with extensive testing. The software includes over 120 tests to ensure it works correctly. Users appreciate the emphasis on privacy, as the local processing option ensures their audio data stays on their device. The ability to customize the overlay window and the support for multiple translation providers have been highlighted as strong points by early users.

Additional Information

ExtormSub is built using modern Windows development tools and requires Windows 10 or 11. The developers have created a secure installer that checks for updates automatically. The application stores settings and API keys securely using Windows encryption. It is designed to be lightweight and efficient, allowing it to run alongside other programs without slowing down your computer. The source code is available for those who wish to build the application from scratch or contribute to its development.