Live voice output
Hear the translation spoken aloud in real-time as the video plays. Not just subtitles — actual translated audio.
Watch any video in your language
Live voice dubbing for YouTube.
Watch YouTube videos in Chinese, Japanese, or any language — and hear them dubbed into your language in real-time. No subtitles needed, just press play.
🔴 Listening…
Chào mừng các bạn đến với chương trình hôm nay.Built for momentum
Less switching. More understanding.
BothLang captures YouTube audio, translates speech via Soniox AI, and plays the translated voice over the video in real-time. The original volume is automatically reduced.
Secure & opt-in
Audio capture requires explicit user action. Audio is streamed securely through BothLang backend to Soniox. Nothing is stored.
Volume control
Original video volume is automatically reduced so the translated voice is clear. Adjust the balance to your preference.
Three quick moves
How it works
A small interaction that fits naturally into the browser you already use.
- 01
Enable live dubbing
Open the BothLang popup on a YouTube watch page and turn on live voice dubbing.
- 02
Play the video
BothLang captures the audio, sends it to Soniox for speech recognition and translation.
- 03
Listen in your language
The translated voice plays over the video in real-time. Optional subtitles show the translated text as well.
Made for the beautifully curious.