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Dubbing in over 25 languages
Spanish, English, French, German, Portuguese, Japanese, Chinese, Arabic, Hindi and many more, including regional variants.
100% free · No account · No subscription
Watch any course in your own language
Paste the links to your course lessons. Course DUB AI downloads them, writes down what the teacher says, translates it, adds a natural dubbed voice and gives you a new MP4 for every lesson.
Download free for WindowsWindows 10/11 · 64-bit · nothing to install
How it works
- 1
Paste the links
All the lessons at once, in any format: one per line, with titles, commas… Course DUB AI sorts them out.
- 2
Choose language and voice
Pick the final language and the voice. The original language is detected automatically.
- 3
Press Start
It downloads, transcribes, translates, dubs and exports. You can pause and continue whenever you want.
- 4
Watch your MP4s
A new dubbed video per lesson and per language. The originals are always kept.
Everything in one program
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Accurate transcription
Whisper AI runs on your own computer: fast with an NVIDIA graphics card, and it also works on the processor alone.
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Natural voices
Neural voices by Microsoft Edge, with offline Windows voices as an automatic backup. Adjust speed, volume and pitch.
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Synchronized with the video
The dub is fitted to the teacher's timing, so what you hear matches what you see.
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Pause and resume
Downloads resume where they stopped. If you close the program, the next time it continues where it was.
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Subtitles included
Export .srt or .vtt subtitles, or embed them in the video. Keep the original audio at low volume if you wish.
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Private by design
Your projects live on your computer. Only plain text is sent to the translation and voice services.
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The program speaks your language
The interface is available in 29 languages and starts in the language of your Windows.
See it in action
Only for content you can legitimately access
Course DUB AI does not bypass DRM or access controls. Protected content is detected and reported, and you confirm you are authorized before adding any link. Use it for courses you have bought or are allowed to watch.
Download Course DUB AI
Version 1.0.0 for Windows · free forever
Download (.rar, 1.4 GB)The download will be available very soon.
SHA-256 checksum:
- Extract the WHOLE folder to your PC (do not run it from inside the .rar). Free tools such as 7-Zip open .rar files.
- Double-click CourseDUBAI.exe. Nothing needs to be installed.
- If Windows says “Windows protected your PC”, click “More info” and then “Run anyway”. It appears because the program has no paid digital signature; it is not a virus.
Requirements
- Windows 10 or 11, 64-bit
- Internet connection (to download, translate and generate the voice)
- 10 GB or more of free disk space
- NVIDIA graphics card: optional, makes transcription much faster
Frequently asked questions
Is it really free?
Yes. There are no payments, no accounts, no ads and no time limit.
Does it work with any course?
It works with the video sources that allow authorized downloads. Videos protected with DRM cannot be processed. Use “Diagnose all” in the queue to check every link without downloading anything.
Do I need a graphics card?
No. With an NVIDIA card transcription is much faster; without one, the program uses the processor automatically.
Where are my videos saved?
In the folder of each project (Documents\CourseDubProjects by default), inside “output”. You can open the folder from the queue.
Which languages can I dub into?
More than 25, including Spanish (Mexico, Spain, Argentina, Colombia, US), English, French, German, Italian, Portuguese, Japanese, Korean, Chinese, Hindi, Arabic, Russian, Turkish and Ukrainian.
Is there a version for Mac or Linux?
Not for now. Course DUB AI is for Windows 10 and 11.
How can I check the file is safe?
Compare the SHA-256 checksum shown in the download section with the one of your file (in PowerShell: Get-FileHash file.rar).