Adding captions to videos is essential for engagement (most people watch without sound). AI can generate accurate captions automatically.

Best Free Tools

1. CapCut (剪映) — Best Free

Price: Free
Platform: Desktop/Mobile

Features:
- Auto speech recognition
- Multi-language support
- Stylish caption templates
- Edit and export

How to use:
1. Import video
2. Click Text → Auto Captions
3. Select language
4. AI generates captions
5. Edit if needed
6. Add style and export

2. VEED.io — Best Online Tool

Price: Free (limited)
Platform: Web

Features:
- Browser-based
- Auto subtitles
- Translation
- Custom styles

3. Kapwing — Good for Translation

Price: Free (limited)
Platform: Web

Features:
- Auto captions
- Multi-language translation
- Edit timeline

4. Subtitle Edit — Professional

Price: Free (open source)
Platform: Desktop

Features:
- Full subtitle editor
- Waveform view
- All subtitle formats (SRT, ASS, etc.)

Tips for Accuracy

  1. Good audio quality — Clear recording
  2. Moderate pace — Not too fast
  3. Manual review — Always check AI output
  4. Punctuation matters — Edit for readability

Summary

  • Best free: CapCut (powerful, free, easy)
  • Best online: VEED.io
  • Best for translation: Kapwing
  • Best professional: Subtitle Edit