DubStream — Live AI Dubbing

Real-time audio dubbing for Chinese, Japanese, Spanish & German video into English or Spanish.

DubStream adds real-time AI voice dubbing to video across the web. Instead of reading subtitles, hear the video spoken in your language while you watch. HOW IT WORKS DubStream detects a video's subtitles, translates them on the fly, and speaks the translation aloud in a natural voice — automatically synced to the video and ducking the original audio so you can follow along hands-free. FEATURES • Real-time dubbing into English or Spanish • Works on videos across the web — not locked to one site • Automatic subtitle detection and translation • Original audio is lowered (not muted) so nothing feels lost • Simple one-click on/off from the toolbar • Free daily dubbing time, with an optional Pro upgrade for unlimited use GREAT FOR • Watching foreign-language lectures, tutorials, and talks • Language learners who want audio, not just captions • Anyone who'd rather listen than read subtitles PRIVACY Subtitle text is sent to our processing service only to translate and generate speech. See our privacy policy for details. Note: DubStream works on videos that expose subtitles/captions. Some major streaming services are intentionally excluded.