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Korean and English captions, translated as the video plays

Wuai is a free app for Windows and Android that captions the videos you watch and translates the captions in real time, on your device. These screenshots show it turning Korean speech into English captions and English speech into Korean captions, on Windows and on Android.

Korean captions as a Korean video plays

Recorded in Wuai on Windows with Plus, the free speech model, not sped up: Korean speech with Korean captions, such as “첫 번째는 교환학생으로 왔어요”, and no translation. Each line comes a moment after it is said; turn on Wait for captions and the video waits for it. Video: WIKITONGUES- Hanbid speaking Korean by Wikitongues, Teddy Nee, CC BY-SA 4.0, on Wikimedia Commons.

A Korean video with English captions

Wuai on Windows: a Korean video with English captions, “I have visited Taiwan twice so far.” over “저는 지금까지 대만을 2번 왔습니다.”.
Windows: 저는 지금까지 대만을 2번 왔습니다. → I have visited Taiwan twice so far.

Video: WIKITONGUES- Hanbid speaking Korean by Wikitongues, Teddy Nee, CC BY-SA 4.0, on Wikimedia Commons.

An English video with Korean captions

Wuai on Windows: a English video with Korean captions, “저는 캐서린 트라우트만입니다.” over “I am Catherine Trautmann.”.
Windows: I am Catherine Trautmann. → 저는 캐서린 트라우트만입니다.
Wuai on Android: a English video with Korean captions, “나는 캐서린 타격 만입니다.” over “I am Catherine Trautmann.”.
Android: I am Catherine Trautmann. → 나는 캐서린 타격 만입니다.

Video: Trautmann, Catherine (en) by Manuel Schneider, CC BY 3.0, on Wikimedia Commons.

How to

  1. Open the video in Wuai: go to its website, or paste its link. A video file works too.
  2. Turn on captions: Captions beside the video on Windows, CC on Android.
  3. Under Spoken language, keep Auto-detect or choose the language spoken.
  4. Turn on Translate captions and choose Korean or English under Translate to.
  5. Under Show, tick Original too to see both lines, as here.

Download free See it work

Where

Wuai translates captions into Korean on Windows and Android, and makes captions from Korean speech on both. See every language.

Shot on November 1, 2026 with Wuai Pro switched on, the captions as Wuai made them. Other speech and translation models' captions can differ. Android and Windows translate 30 minutes of video for free; iPhone and Mac require Pro for translation.

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Khmer · Lao · Every language · Captions in your language · Two captions at once