Vocnu for course creators

What you get for each lesson

• The lesson video, in the format you uploaded (or MP4), with the voice-over as its main audio track, your original sound as a second one, and subtitle tracks in both languages.
• Or the voice-over audio alone, as M4A, MP3, WAV, FLAC or OGG, as long as the lesson, for a player that takes a separate audio track.
• The subtitles in the new language as SRT, VTT and ASS files, and a transcript of what you said, as an SRT file.
• On request, subtitles burned into the picture for 1 more credit a minute, for a platform that shows no subtitle files. They are always visible and cannot be turned off.
• On request, SDH subtitles for 1 more credit a minute, which also write out sounds, speaker names and songs.

When we checked on 10 November 2026, a 60-second video came back as an MP4 with the voice-over as the default audio, the English original as a second track and two subtitle tracks, and its audio file ran 60.000 seconds, the same as the video.

Have a native speaker check one lesson first

Vocnu has no editor for changing the translation line by line before it is voiced. So before you translate a whole course, make one lesson and send its share link to someone who speaks the language: anyone with the link can play the voice-over and download its files without an account, until you turn the link off or the files expire.

If they find a line in the subtitles they would write differently, you can fix the SRT file in any subtitle editor, but the voice stays as it was made. If you need to correct what the voice says, line by line, a dubbing tool with an editor fits better, such as Maestra AI.

What 60 lessons cost, and how rounding adds up

Vocnu rounds each upload's minutes up. 60 lessons of 5 minutes 30 seconds are 330 minutes of video, but uploaded one by one they are billed as 360:

In Standard, the same 330 minutes as one file would cost €22 to €33, but you would then cut the result into lessons yourself. For lessons of several minutes the difference is small; it grows with very short ones, since a 20-second clip is billed as a whole minute.

The prices run from the largest credit pack to the smallest. You see the quote before a job starts and are never charged more, and failed or cancelled jobs are refunded in full.

A whole course at once

• Each file can be up to 10 GB and 5 hours long.
• A job usually takes less than the length of the video: on our measurements, about 4 minutes for a 5-minute video and 20 for an hour, from the start of processing. A short lesson you talk through from start to finish can take about twice that, and you can close the page while it works.
• For a course of dozens of lessons, the command line uploads a lesson, shows the price, translates it and saves the results next to the file in one command, so a script can work through a folder.
• One job makes one language. For the next, start a new job from the same upload, without uploading again.
• Vocnu deletes uploads after 7 days and finished files after 30, so download the results and keep your own copies.

When Vocnu is not the right pick

• You want the lessons in your own voice. Vocnu reads with its own voices; Rask AI and ElevenLabs can clone yours.
• You teach on camera and want your lips to match the new language. Vocnu does not lip-sync.
• Your slides and screen recordings are full of text that must be translated too. Vocnu translates what is said; the text in the picture stays as it is.
• You want to edit the translation line by line before it is voiced. Vocnu has no editor for that.
• You need a translation a person signs off, for example for accredited training. Vocnu's translation is made by AI.
• Several teachers or guests talk and each should keep a voice of their own. One voice reads every speaker.

Taking someone else's course in your language is a different job: see Vocnu for online courses.