YouTube Gemini

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. ■ Supported sites • YouTube and YouTube mobile pages • Vimeo and embedded Vimeo players • Udemy and Udemy Business course pages Some videos may not provide readable caption data. Translation availability depends on the subtitle tracks exposed by the video platform.