Vocnu for languages YouTube does not dub
YouTube's automatic dubbing turns English videos into 20 languages and most other videos only into English. Of the 35 languages Vocnu reads, 20 never get a YouTube dub, Lithuanian, Czech, Greek, Swedish and Turkish among them. In any of them, the Vocnu extension for Chrome, Brave and Edge reads a YouTube video aloud as it plays, over the lowered original. On 10 November 2026 a NASA briefing gave us its first Greek line 26 seconds after we switched Vocnu on, and its first Swedish line in 24. A 20-minute video costs €1.32 to €2.00 in Standard quality.
For Chrome 120 or newer, Brave and Edge on a computer.
The 20 languages, as of 10 November 2026
YouTube's help page on automatic dubbing lists, for each language a video can be in, the languages YouTube can dub it into. We read it on 10 November 2026 and set it beside Vocnu's 35. Twenty of them are never a target:
- Not on YouTube's list at all: Lithuanian, Latvian, Estonian, Swedish, Danish, Norwegian, Finnish, Czech, Slovak, Slovenian, Croatian, Bulgarian, Hungarian, Greek and Malay.
- Dubbed from, never into: Romanian, Turkish, Vietnamese, Thai and Chinese. A Turkish video can get an English dub; an English video cannot get a Turkish one.
Vocnu's other 15 languages get a YouTube dub only from some videos. English ones can be dubbed into Arabic, Dutch, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Polish, Portuguese, Russian, Spanish and Ukrainian. Videos in 29 languages can be dubbed into English, and a few pairs besides: Hindi into Bengali, Korean into Indonesian, Portuguese into Spanish, and Spanish into Arabic and Portuguese. So a German viewer of a Polish video gets no dub either. Vocnu vs YouTube auto-dubbing compares the two in more detail.
The same page says: "We are gradually expanding support for new languages and improving dub quality. As a result, some channels might have access to new languages sooner." The list will change, and a channel may get a language before others do, so look in a video's audio track menu before you go by this one.
What YouTube gives a viewer in these languages
On 10 November 2026 we opened NASA's "Moon Base: November 2026 Update" on YouTube, 1 hour 36 minutes long. Its audio track menu offered the English original and 20 automatic dubs, none of them in a language from the list above. Its subtitle menu could auto-translate the English captions into 156 languages, all 20 included. A Czech or Lithuanian viewer could read the video in their language, but not hear it.
Vocnu adds the listening. The extension translates the video's captions, or what it hears when there are none, and a voice reads the translation over the lowered original, with subtitles in your language over the picture. If a video already has a dub in your language, use that: it is free.
A NASA briefing in Greek and Swedish
On 10 November 2026 we played NASA's "Artemis Acceleration" briefing of 23 October 2026 on YouTube, 2 hours 5 minutes long with English captions from NASA, and switched Vocnu on at two points of it. YouTube offered no dub in any language: the video is over YouTube's 120-minute limit for dubbing.
| Language | Started at | First line after | A line Vocnu read | Our English back-translation |
|---|---|---|---|---|
| Greek | 30:00 | 26 seconds | πώς να τα φτιάξουμε σε τέτοια κλίμακα και να αντέξουν. | how to build them at that scale and make them last |
| Swedish | 1:00:00 | 24 seconds | Vi gör likadant med SLS-raketen. | we do the same with the SLS rocket |
The last column is ours, not NASA's caption. The briefing is NASA's and in the public domain; NASA does not endorse Vocnu. A Lithuanian test on a two-hour conference talk with no captions at all is on Vocnu for lectures and talks.
What it costs in these languages
Every language costs the same. With the extension you pay for the minutes Vocnu voices: a 20-minute video costs €1.32 to €2.00 in Standard, €2.64 to €4.00 in Premium and €0.66 to €1.00 in Economy, from the largest credit pack to the smallest. Slovenian and Croatian have no Economy voice yet, so their voice-overs are Standard or Premium.
A new account's free credits cover 40 minutes of Standard, enough to hear how your language sounds on a video you know. If reading is enough for you, YouTube's auto-translated subtitles cost nothing.
When Vocnu is not the right pick
- You are happy to read. YouTube's auto-translated subtitles cover all 20 of these languages for free.
- You follow the original language well enough. A translation adds little then.
- Your language is Bengali, Hebrew, Malayalam, Punjabi, Tamil or Telugu. YouTube dubs English into them, and Vocnu does not read them.
- You watch on a phone, a tablet or a TV. The extension runs in Chrome, Brave and Edge on a computer.
- You run the channel and want your videos in these languages for everyone. That is an upload job: see Vocnu for YouTube creators.