DubNow

DubNow: Real-Time AI Dubbing and translation for active browser tabs using Gemini Live API.

DubNow transforms your video viewing experience with ultra-low latency, real-time AI voice dubbing and bilingual subtitle overlays. Watch foreign-language lectures, international courses, global news, or foreign cinema—translated and voiced live into your native language with natural human-sounding neural audio. KEY FEATURES: • Zero-Latency Live Dubbing: Translates video speech as it plays with under 1-second delay. • 100+ Supported Languages: Spanish, Urdu, Hindi, Arabic, French, German, Japanese, Portuguese, Chinese, Russian, and more. • Dual-Audio Volume Mixer: Control the volume balance between the original video audio and the translated AI voiceover. • Live Bilingual Subtitles: Floating, customizable subtitle overlay displaying both original and translated text simultaneously. • Bring-Your-Own-Key (BYOK): Connect your personal Google Gemini Live API key for dubbing, or use DubNow's built-in managed daily quota. • Universal Compatibility: Works on any website with video — online courses, news, movies, live streams, and any HTML5 video player. • Exportable Transcripts: Download full session bilingual transcripts (SRT or TXT) with precise timestamps. PRIVACY & ARCHITECTURE: • Direct-to-Gemini Connection: Captured tab audio is streamed directly from your browser over TLS to Google's official Gemini Live WebSocket API (generativelanguage.googleapis.com). • Zero Server Audio Storage: Audio is never routed to, processed by, or recorded on DubNow servers. Streaming is strictly real-time and ephemeral. • Local Credential Storage: Your BYOK API keys and subtitle settings are saved locally in your browser's private chrome.storage.local and are never shared. HOW TO USE: 1. Open any tab containing video. 2. Click the DubNow extension icon in your Chrome toolbar. 3. Select your Target Language and Voice style. 4. Click "Start Live Dubbing" and enjoy seamless real-time translation!