DubTab – Live AI Dubbing in the Browser (Meet/YouTube/Twitch/etc.)

Hi HN — I’m Ethan, a solo developer. I built DubTab because I spend a lot of time in meetings and watching videos in languages I’m not fluent in, and subtitles alone don’t always keep up (especially when the speaker is fast).

DubTab is a Chrome/Edge extension that listens to the audio of your current tab and gives you:

1.Live translated subtitles (optional bilingual mode) 2.Optional AI dubbing with a natural-sounding voice — so you can follow by listening, not just reading

The goal is simple: make it easier to understand live audio in another language in real time, without downloading files or doing an upload-and-wait workflow.

How you’d use it

1.Open a video call / livestream / lecture / any tab with audio 2.Start DubTab 3.Choose target language (and source language if you know it) 4.Use subtitles only, or turn on natural AI dubbing and adjust the audio mix (keep original, or duck it)

What it’s good for 1.Following cross-language meetings/classes when you’re tired of staring at subtitles 2.Watching live content where you can’t pause/rewind constantly 3.Language learners who want bilingual captions to sanity-check meaning 4.Keeping up with live news streams on YouTube when events are unfolding in real time (e.g., breaking international updates like U.S./Iran/Israel-related developments)

Link: https://dubtab.com

I’ll be in the comments and happy to share implementation details if anyone’s curious.