YouTube now dubs videos by itself, for free, and switches it on for eligible channels without being asked. Here is what it does, how to control it, what it supports, and the specific places it falls short of a recorded voice.
What auto-dubbing does
Auto-dubbing takes the speech in your video, translates it, and generates a synthetic voice track in another language. It is enabled by default for eligible creators, it runs on videos you have already published, and viewers see an auto-dubbed label in the description of any video where the track came from YouTube rather than from you.
It costs nothing and it needs no work from you. For a channel with no localisation at all, that is a real gain: a video that spoke one language now speaks several.
Which languages it covers
From an English original, YouTube lists more than twenty target languages, including Arabic, Bengali, Dutch, French, German, Hebrew, Hindi, Indonesian, Italian, Japanese, Korean, Malayalam, Polish, Portuguese, Punjabi, Russian, Spanish, Tamil, Telugu and Ukrainian. Non-English originals are narrower: Spanish dubs to Arabic, English and Portuguese; Portuguese to English and Spanish; Hindi to Bengali and English; Korean to English and Indonesian. Most other source languages dub to English only.
How to turn it on, off, or hold it for review
In YouTube Studio, go to Settings → Content → Automatic dubbing and use the toggle. In the same place you can choose Publish manually, which generates dubs but holds them until you release them.
Per video, the Languages screen in Studio lets you preview the dubbed audio, read the transcript it was built from, and publish, unpublish or delete any dub. If a dub is wrong, embarrassing or in a language you do not want represented on your channel, deleting it is one click.
Turning auto-dubbing off is also what you do before uploading your own track in that language: if an automatic dub already exists for a language, YouTube requires you to delete it before you can upload your own.
What it is not eligible for
YouTube excludes videos longer than 120 minutes, videos without enough speech, and videos containing copyrighted material. If auto-dubbing is missing on one video but present on others, check those three first.
Where it falls short
YouTube is candid about this in its own documentation: dubs “might contain errors due to mispronunciations, accents, dialects, or background noise”, and proper nouns, idioms and jargon are hard. Quality varies by language, and only some languages get expressive speech that follows the original pitch and intonation.
In practice, on channels built around a voice, four things separate an auto-dub from a recorded one:
- Performance. A synthetic read is even. Your channel probably is not — the pause before the punchline, the drop before the reveal, the pace of a story being told. That timing is what the audience came for, and it is the first thing lost.
- Names and jargon. Case numbers, place names, brands, the running in-jokes of a channel. These are exactly the words a machine mangles, and exactly the words your regulars notice.
- The mix. An auto-dub replaces the speech. A recorded dub is mixed back into your music and effects at the original level, so the video still sounds like your video.
- The label. Auto-dubbed tracks say so in the description. Viewers in those languages know they are hearing a machine before they press play.
The honest way to choose
This is not one decision for a whole channel. Auto-dubbing is a reasonable default for the long tail: old uploads, secondary languages, videos that are mostly information. Recorded voices earn their cost where your delivery is the product and where a language is already showing up in your analytics with real watch time.
A practical pattern: leave auto-dubbing on so nothing is left unspoken, then replace it language by language, starting with the one or two that your own numbers say are worth it. Our guide on which languages to dub first shows how to read that from your analytics rather than from a top-ten list.
Replacing a track is not destructive: delete the auto dub in that language, then upload your own in its place. The video keeps every view it already had.
What a recorded dub costs you to try
We dub the first minute of one of your videos into a language you pick, free, for serious inquiries — a real voice actor, mixed with your own music, so you can put it next to the auto-dub of the same minute and decide with your ears. Ask for a sample.
Sources: YouTube Help — Automatic dubbing; YouTube Help — Multi-language features.