AutoDub User Guide

AutoDub is a free browser extension that dubs YouTube videos in real time. It translates the video into the language you choose and speaks it in a natural AI voice, in sync with the video.

Before you start

AutoDub works on YouTube videos. Use desktop Chrome, Edge, Brave or Firefox with an internet connection. Live streams, the YouTube mobile app and dubbed-video downloads are not supported.

Installation Guide

Install AutoDub — Chrome, Edge, Brave & Firefox

How to Use

1. Find the AutoDub Button

After installation, reload an open YouTube video. Move your pointer over the player to reveal the controls, then click AutoDub on the right.

2. Select Target Language

In the panel, choose the language you want to hear and a voice. AutoDub detects the video’s original language automatically.

3. Press Play

After you pick a language, just press play. AutoDub translates as the video plays, so there is no waiting for the whole video to process.

Adjust Settings

Dubbing
Choose “Off, subtitles only” to read the translation without a dubbed voice. The original audio stays unchanged.
Voice
Pick from male and female voices for each language
Dubbing volume
Adjust the volume of the translated dubbing
Original audio
Choose “Lowered while dubbing” (default), “Lowered the whole time”, “Unchanged” or “Muted”. For the first two, the “Original audio volume” slider sets how loud the original stays.
Translated subtitles
Choose “Show above YouTube captions” for both languages, “Show instead of YouTube captions” for the translation alone, or “Don't show” to hide translated subtitles. Subtitle size is under “More settings”. Hiding translated subtitles is available only while dubbing is on.
Dubbing speed
Find “Dubbing speed” under “More settings”. This adjusts the dubbed voice; it is separate from YouTube’s video playback speed.
Transcript
Under “More settings”, enable “Transcript” to read the translated transcript beside the video. Click a line to jump to that point. Opening the panel also translates the remaining sections.
Auto-dubbing
Under “More settings”, choose “Start automatically on foreign-language videos” to start on videos whose language differs from your target language. Choose “Off” to start each session yourself.

Frequently Asked Questions

Why isn't AutoDub showing on the video page?

Make sure the extension is installed, then refresh the YouTube page. If the button still does not appear, open your browser's extensions page and check that AutoDub is enabled.

The video has subtitles, but AutoDub says none are available

Text burned into the picture isn’t a selectable caption track. Check which tracks the video offers under YouTube’s Settings → Subtitles/CC, then reload the page and turn AutoDub on again. If the message stays, try another video.

The translation is loading, but I cannot hear the dub

Make sure the video is playing, dubbing is on, and neither the tab nor your device is muted. Check the dubbing volume too. Wait for the first section to load. If it keeps loading, check your connection and reload the page; if it still fails, send us the video URL and error message.

Why does dubbing not start automatically?

Automatic start applies to videos in a different language from your target. Check the automatic-dubbing setting under “More settings”. For a same-language video, start manually. You can return to “Off” to keep control of when translation starts.

What if the translation is wrong or hard to follow?

Dub quality follows the source speech. Unclear audio can make the translation less accurate, so videos with clean speech translate best.

Does it support offline use?

No. AutoDub needs an internet connection to translate and generate the dub.

Privacy Protection

How AutoDub handles your data:

Privacy Policy

Technical Support

If you run into a problem, there are three ways to get help: