YouTube Gemini

Real-time subtitle translation for YouTube, Vimeo, and Udemy, with dual captions and translated transcripts. YouTube Gemini helps you watch videos in other languages with clear, real-time translated subtitles.

It works across YouTube, Vimeo, and Udemy, including many auto-generated subtitle tracks. Choose your target language, tune the subtitle display, and keep learning or watching without leaving the video.

■ Main features

• Real-time subtitle translation for YouTube, Vimeo, and Udemy.
• Supports 17 target languages including Korean, English, Japanese, Simplified Chinese, Traditional Chinese, Spanish, French, German, Italian, Portuguese, Russian, Vietnamese, Thai, Indonesian, Arabic, Hindi, and Turkish.
• Dual subtitles: view the original caption and translation together.
• AI video summaries and clickable two-level chapters for navigating long videos.
• Video- and language-specific summary caching so an existing result can be reused without storing raw subtitles or API keys.
• Drag subtitles and the chapter guide anywhere inside the video, and resize subtitle text from its corner handles on desktop or mobile.
• Translation style presets for natural, literal, technical, concise, or formal subtitles.
• Custom glossary for preferred names, terms, and phrases.
• Adjustable subtitle font size, width, and screen position.
• Translated transcript viewer for reading and copying the full subtitle text.
• Works with YouTube captions, Vimeo players, and Udemy course pages.

■ Good for

• Watching lectures, tutorials, interviews, and international videos.
• Language learning with original and translated subtitles side by side.
• Technical content where consistent terminology matters.
• Courses and long-form videos where readable subtitles make a real difference.