Auto Subtitles
Automatically generate subtitles from speech using AI (Whisper). Extract an SRT file or burn subtitles directly into your video.
Drop files here or click to browse
Max 4096.0 MB per file · drop multiple for batch
Processed on our servers — requires a free account
How to Use Auto Subtitles
- Upload a video with speech
- Choose output mode: extract SRT or burn into video
- Select the language (or leave on auto-detect)
- Pick a Whisper model (Base for speed, Small for accuracy)
- Click Process and download your subtitles
Features
- AI-powered speech recognition using OpenAI Whisper
- Extract SRT subtitle files or burn subtitles into video
- Supports 14 languages with auto-detection
- Choose between Base (faster) or Small (more accurate) models
- Server-side processing — no browser limitations
Frequently Asked Questions
- Why is this tool server-only?
- Whisper AI speech recognition requires model files (140-460MB) and significant compute power that isn't available in browser WebAssembly. Server-side processing ensures fast, reliable results.
- What languages are supported?
- Auto Subtitles supports 14 languages: English, Spanish, French, German, Italian, Portuguese, Dutch, Japanese, Korean, Chinese, Russian, Arabic, and Hindi. You can also use auto-detect to let the AI identify the language.
- What's the difference between Base and Small models?
- The Base model is faster (~10x realtime speed) and good for clear speech. The Small model is more accurate (~5x realtime) and handles accents, background noise, and complex speech better.
- What's the difference between extract and burn modes?
- Extract SRT gives you a subtitle file you can use in any video player. Burn into video renders the text permanently onto the video frames — useful for social media where viewers may not enable captions.