AutoDub is a free Chrome extension that translates YouTube videos and dubs them with an AI voice as they play. You hear the video in your own language instead of reading subtitles, and the translated subtitles still show on screen if you want to read along. ★ Free. No daily video limit and no paywall. You do need to sign in with email or Google, which is how we keep bots from burning through the service. How it works

Install AutoDub and open a YouTube video.
Click the AutoDub button in the player controls, then pick your language.
Press play.

Features

One-click translate & dub — the AutoDub button sits right in YouTube's player controls; press play and dubbing starts
Automatic source language detection. You only choose the language you want to hear, never the one the video is in.
Neural AI voices you can listen to for two hours straight, which is the whole point of a lecture or a podcast.
Choose your voice: male and female options for every language, 50+ voices in all. English comes in US and UK accents.
Translation happens while the video plays. A video that has been dubbed before starts right away.
Dubbing that stays in sync through pausing, seeking and 2x playback.
Voice speed from 0.5x to 2x, set separately from the video speed.
Translated subtitles on screen. Leave YouTube's own captions on and you get both languages at once.
Original audio stays under your control: keep it as it is, or have AutoDub lower it while the voice speaks.
Chrome, Edge, Brave and other Chromium browsers. There is a Firefox build on Firefox Add-ons.

Dub YouTube into 22 languages: English · Spanish (Español) · Portuguese (Português) · French (Français) · German (Deutsch) · Italian (Italiano) · Dutch (Nederlands) · Polish (Polski) · Swedish (Svenska) · Danish (Dansk) · Norwegian (Norsk) · Finnish (Suomi) · Russian (Русский) · Turkish (Türkçe) · Arabic (العربية) · Hindi (हिन्दी) · Thai (ไทย) · Vietnamese (Tiếng Việt) · Japanese (日本語) · Korean (한국어) · Chinese Simplified (简体中文) · Chinese Traditional (繁體中文) Good for

Lectures, online courses and coding tutorials, where you need your eyes on the slides or the code rather than on a subtitle line.
Long interviews and podcasts.
Documentaries, news and video essays.
Creators, travel and gaming videos from countries whose language you don't read.
Anything you watch while cooking, commuting or fixing something, when you're only half looking at the screen.
Language practice. Listen in your language and read the original captions, or do it the other way round.

Website: https://autodub.net