LiveDouble

Dub any tab into 78 languages in real time, with live subtitles. Uses your own Gemini API key.

LiveDouble dubs the audio of any Chrome tab into another language while it plays, and can show the translation as subtitles right on the video. Watch a lecture, a conference, a podcast or the news in Persian, English, Arabic, Turkish, German, French, Spanish, Russian, Hindi, Chinese, Japanese or Korean. HOW IT WORKS • Get a free API key in Google AI Studio and paste it into the extension once. • Open a tab with sound, click LiveDouble and press Start. • You hear the dub; the original voice is lowered underneath so the speaker stays clear. FEATURES • Live speech-to-speech dubbing into 12 languages. The spoken language is detected automatically. • Live subtitles on the video: translation only or dual, top or bottom, three sizes, three styles. • Separate volume for the dub and the original. Turn the dub off to read subtitles only. • Save the last session as a WAV (dub audio) and an SRT (subtitles) file. • Keyboard shortcut: Alt+Shift+D starts and stops dubbing. • Light and dark themes. PRIVACY • No LiveDouble server and no account. Tab audio goes straight from your browser to Google's Gemini API using your own key. • Your key stays in your browser. By default it is forgotten when the browser closes; you can choose to remember it on this device. • Google bills usage to your own key. LiveDouble charges nothing. • Audio is captured only for the tab you start dubbing, and only while dubbing runs. GOOD TO KNOW • This is preview technology: translation quality, delay and voice continuity can vary. • Requires a Gemini API key from Google AI Studio. • LiveDouble is an independent project and is not affiliated with or endorsed by Google.