← Every language

Thai 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 Thai speech into English captions and English speech into Thai captions, on Windows and on Android.

Thai captions as a Thai video plays

Recorded in Wuai on Windows with the Pro speech model, not sped up: Thai speech with Thai captions, such as “พอหิวก็หยุด”, 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- Dang speaking Thai by Wikitongues, CC BY-SA 4.0, on Wikimedia Commons.

A Thai video with English captions

Wuai on Windows: a Thai video with English captions, “Generally, there are shops around Siam, so I go back and forth between home and Siam.” over “ทั่วไปแล้วก็มีร้านอยู่ที่แถวสยามข้นั้นก็จะไปไปมาๆ”.
Windows: ทั่วไปแล้วก็มีร้านอยู่ที่แถวสยามข้นั้นก็จะไปไปมาๆ → Generally, there are shops around Siam, so I go back and forth between home and Siam.

Video: WIKITONGUES- Dang speaking Thai by Wikitongues, CC BY-SA 4.0, on Wikimedia Commons.

An English video with Thai captions

Wuai on Windows: a English video with Thai captions, “ฉันคือแคทเธอรีน ทรอต์มันน์” over “I am Catherine Trautmann.”.
Windows: I am Catherine Trautmann. → ฉันคือแคทเธอรีน ทรอต์มันน์
Wuai on Android: a English video with Thai captions, “ฉันเป็น Catherine Trautmann” over “I am Catherine Trautmann.”.
Android: I am Catherine Trautmann. → ฉันเป็น Catherine Trautmann

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 Thai 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 Thai on Windows and Android, and makes captions from Thai 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.

More languages

Telugu · Turkish · Every language · Captions in your language · Two captions at once