Coloso Video Translator hear any class in your language, on any Coloso site.
DubTab is a Coloso translate extension that works in real time: it listens to the instructor and speaks the lesson in English or your language with an AI voice, while translated captions follow on screen. Korean, Japanese, Chinese or English instructor, any of the three Coloso sites, whatever subtitles the class came with — or none.
Free 15-minute trial · No credit card · Works on all three Coloso sites
The class ships with a few subtitle languages. Not with yours — and not as a voice.
A Coloso class comes with the languages it was released in: on coloso.global that's English subtitles plus [Auto] Traditional Chinese and Thai, on coloso.jp Japanese, on coloso.co.kr Korean. If yours isn't on the class page, it isn't in the class.
Even when your language is there, it's text. A 30-hour painting class is a 30-hour demo — every second you spend on the subtitle bar is a second you're not watching the brush.
Coloso's own dubbed versions cover a few classes in one language each — an English [Dubbed] class on coloso.global, a Japanese 吹き替え version on coloso.jp — and on coloso.jp the dubbed audio can't be switched back to the instructor's own voice.
An AI voice speaks the lesson in your language while the video plays — keep your eyes on the canvas, the viewport, the timeline. Translated captions are one click away when you want to read along.
DubTab listens to the instructor, not to the subtitle file — so a class with [Auto] subtitles, subtitles in a language you don't read, or none at all works the same, on all three Coloso sites.
The instructor's own voice stays underneath the dub, at a volume you set — you still hear how they talk through a stroke, instead of a synthetic voice on its own.
Translate a Coloso class in 3 clicks
1. Add DubTab to Chrome
One click from the Chrome Web Store — the free trial is included.
2. Open your class on any Coloso site
coloso.global, coloso.jp or coloso.co.kr — open the classroom in Chrome as usual. The trailer on a class page works too.
3. Turn on dub & captions
Pick your language once. The AI voice and translated captions start within seconds.
Built for classes you watch, not read
Real-time AI dubbing
The voice speaks while the video plays — not a file you upload and wait for. A 26-video, 30-hour class works the same as a two-minute trailer.
Bilingual captions
Translated captions alongside the original, or your language alone. Read along with the dub, or use captions on their own — both follow the lesson live.
Works from the audio, not the [Auto] track
DubTab listens to the instructor, so a class with [Auto] subtitles, subtitles you can't read, or no subtitles at all works the same. Korean, Japanese, Chinese or English — the spoken language is detected automatically.
All three Coloso sites
coloso.global, coloso.jp and coloso.co.kr all play in the browser, and DubTab dubs whatever the tab is playing — including classes that were only ever released on one of them.
Stays in sync automatically
Auto catch-up keeps the dub aligned with the video, so the voice never lags behind the instructor — even after you scrub back to rewatch a stroke.
Any instructor language, yours out
The class can be taught in Korean, Japanese, Chinese or English — you pick what you hear, from 60+ languages. And the instructor's own voice stays underneath, at a volume you set.
What people learn on Coloso with DubTab
Coloso classes are long, close-up demos — a hand drawing, a viewport turning, a timeline scrubbing — taught by Korean, Japanese and Chinese artists who rarely teach in English. That's exactly where a voice beats a subtitle bar.
Anime-style character illustration
Coloso's biggest category: character design, coloring, rendering and finishing, mostly taught by Korean and Japanese illustrators in their own language. Hear the reasoning behind each stroke while you watch it happen.
Comics and webtoons
Storytelling, paneling, line work and production pipelines from working comic artists — including the Chinese-taught classes on coloso.global that ship with [Auto] English subtitles only.
3D, VTuber and Live2D
Modeling, rigging, texturing and VTuber model production — classes where the instructor's cursor is the lesson, and the subtitle bar sits right on top of the viewport.
Animation and motion
2D animation, motion design and cinematics, frame by frame. Follow the timing notes in your language without pausing to read them.
Concept art and game art
Characters, environments, props and game FX from studio artists. Terminology-heavy, demo-heavy — the dub carries the terms while you watch the painting.
Design, crafts and everything else
Graphic and UX design, figure painting, pastry, hair — Coloso's catalog goes well past drawing, and every class plays in the same browser player. Same DubTab, same three clicks.
Doesn't Coloso translate its classes?
It does — per site, per class, per language, and it says so on every class page: any subtitle or audio marked [Auto] is automated translation, and "some content may not be translated". On coloso.global that means English subtitles plus [Auto] Traditional Chinese and Thai; on coloso.jp, Japanese; on coloso.co.kr, Korean. A few classes have an AI-dubbed version, in one language. Everything else — your language, as a voice, on any class — is what DubTab adds.
| What you're watching | What Coloso gives you | DubTab |
|---|---|---|
| A Korean- or Japanese-taught class on coloso.global | English subtitles, plus [Auto] Traditional Chinese and Thai — text only | ✓ Real-time dub + captions in your language, 60+ languages |
| An English- or Chinese-taught class on coloso.global | [Auto] subtitles only — English included — machine-made, and the audio stays as recorded | ✓ Works from the audio — dubs it into any of 60+ languages |
| A [Dubbed] class on coloso.global | AI English dub — a few classes, English only | ✓ For the other 60+ languages — and for every class without a dubbed version |
| A class on coloso.jp or coloso.co.kr | Japanese or Korean subtitles — and on coloso.jp, an AI dub on a minority of classes that can't be switched back to the instructor's voice | ✓ Dubs it into English or your language, with the instructor's voice still underneath |
Coloso translates what it ships. It doesn't ship your language.
A class arrives with a fixed set of tracks, decided when it was released on that site: English plus [Auto] Traditional Chinese and Thai on coloso.global, Japanese on coloso.jp, Korean on coloso.co.kr. Spanish appears on some classes as an [Auto] track; Portuguese, French, Vietnamese, Arabic — not on the list, on any site. DubTab doesn't work from the list. It listens to the instructor and speaks your language, on every class, on every site.
Subtitles are for reading. A drawing class is for watching.
Coloso classes often run 20 to 40 hours, and almost all of it is a close-up of someone working — a stroke, a rig, a keyframe. The subtitle bar sits on top of exactly that. With the dub carrying the explanation, you watch the hand; translated captions stay one click away for the moments you'd rather read. And because most Coloso classes are unlimited access, you'll come back to the same lesson for years — in a language you hear, not one you decode.
One AI voice, one language, a few classes — isn't the same as your voice on every class.
Coloso's own dubs exist: an English [Dubbed] version of a few classes on coloso.global, a Japanese 吹き替え version of a minority of classes on coloso.jp — sold as separate versions, in one language, and on coloso.jp the audio replaces the instructor's and can't be switched back. DubTab dubs every class into any of 60+ languages and keeps the instructor's own voice underneath, at a volume you choose.
Frequently asked questions
Your next Coloso class, in your language.
Install once — the dub starts the moment the instructor starts talking, on any class, on any Coloso site.
Add to Chrome — FreeFree 15-minute trial · Works on Edge too · Windows app available