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Description
Translate subtitles on any web video with AI. Auto-generates subtitles when there are none, synced live as you watch. Translate any video's subtitles into your language — while you watch. LynSub adds AI-translated subtitles to almost any video on the web. If the video already has a subtitle track, LynSub translates it. If it has no subtitles at all, LynSub listens to the audio, transcribes the speech, and builds them from scratch. Either way the translated lines appear over the player, in sync, cue by cue, as the video plays. WHAT IT DOES - Translates the existing subtitles on any standard HTML5 video - Creates subtitles from speech when the video has none - 72 target languages, including Vietnamese, Spanish, Portuguese, Hindi, Indonesian, Japanese, Korean, Chinese, Arabic, French, German and Thai - Shows the original line and the translation together, so you can follow both - Keeps translating while you watch — you never wait for the whole video first - Works in fullscreen, and the overlay re-anchors itself when you resize - Remembers your language and where you like the subtitles to sit WHY IT READS BETTER THAN A MACHINE TRANSLATION Most subtitle tools push each line through translation on its own. A line like "Get it?" comes back as nonsense, because nothing told the translator who was speaking or what was said thirty seconds earlier. LynSub translates in context. It follows who is speaking across a scene, works out how the characters relate to one another, and carries that through the rest of the dialogue. That matters enormously in any language where you must choose a form of address — Japanese keigo, Korean speech levels, Spanish tu/usted, German du/Sie, Vietnamese anh/chi/em, v.v. The result reads like dialogue instead of a lookup table. WHERE IT WORKS LynSub works on standard HTML5 video across the web: lecture recordings, conference talks, news clips, documentaries, interviews, course platforms and self-hosted players. It does not work on DRM-protected video. Services such as Netflix, Disney+ and Amazon Prime Video encrypt their streams, and LynSub deliberately does not try to get around that. WHO IT IS FOR - Anyone watching talks, lectures or interviews in a language they do not read - Language learners who want the original and the translation side by side - Researchers and students following technical material published only in English - Anyone who finds a video with subtitles in the wrong language, or none at all HOW TO USE IT 1. Open a page with a video 2. Click the LynSub icon 3. Choose your language and press Translate 4. Play the video — the translated subtitles appear over it Start free. A monthly allowance of video minutes is included at no cost, and you can see exactly how much is left before a translation begins. PRIVACY LynSub only reads the page you explicitly ask it to translate. Audio and subtitle text are sent to our servers so they can be transcribed and translated, and nothing else on the page is collected or stored. We do not sell your data. SUPPORT Something did not work, or a translation came out wrong? Write to us — we answer.