Get started for free · Unlimited dubbing every day

Open YouTube and understand foreign-language videos

AI combines context-aware subtitle translation with natural voice-over that follows video playback. From the first play, dubbing stays as closely synced to the video pace as possible.

Add to ChromeSee how it worksFree plan: unlimited dubbing every day · up to 40 minutes per video
The player shows CCDub's real panel: you can control toggles, subtitles, dubbing, speed, and translation source directlyCCDub works inside the YouTube player: translated subtitles and synced AI dubbing (use the panel on desktop)
20,000+Users
4.3 / 5Chrome Web Store rating
75+Supported languages
Why install it

Not understanding isn't the problem. Staring at subtitles is.

Reading subtitles and watching the screen compete for the same attention. The longer the video, the more it costs you.

With YouTube captions alone

  • Your eyes are stuck on the caption bar, so whatever is being demonstrated on screen only registers peripherally
  • Auto-captions are translated line by line, so technical content often needs a second read and a rewind
  • Videos with no caption track are simply off the table
  • Finding one sentence again means dragging the scrubber and guessing
  • An hour-long course leaves you more drained than reading a paper

With CCDub installed

  • AI dubbing reads along with the video, so your eyes can stay on the picture
  • Translation uses the surrounding context, so terms and long sentences read like real language
  • Videos without a caption track are not supported yet; real-time transcription is planned
  • The full transcript is searchable, and exports to SRT / TXT for later review
  • Listen while doing something else — long videos finally get finished in one sitting
How it works

Three steps, all inside the YouTube page

Nothing to upload, no waiting for the whole video to process — translation and dubbing happen as it plays.

01Get the captions

Detects and fetches the video's existing caption track. Videos without one are not supported yet; real-time transcription is planned.

caption trackspeech recognitiontimeline
02Translate in context

Whole passages go to the model rather than one line at a time — that is the only way terms and long clauses survive the translation.

contextconsistent termstranslation
03Dub as it plays

The translation becomes natural speech aligned to the timeline; it speeds up to keep pace with fast passages and steps aside during ads.

speech synthesisalignmentauto speed
What it does

Everything you need to watch a video in another language

Every item below already ships in the extension. None of it is a roadmap.

Real-time AI dubbing

Turns the translation into a natural voice that plays along with the video. Original and dubbed volume are set separately, so you can drop back to the original any time.

Bilingual subtitles

Original and translation on screen together, so you can check the wording at a glance.

Voice cloningPRO

Record seven seconds of your own voice, and the dubbing speaks the foreign language in it.

7s

Word explanation assistant

Click any word in the subtitles and an explanation streams in, read aloud on request — no need to leave for a dictionary.

Caption track required

CCDub currently requires an existing caption track. Videos without captions are not supported yet; real-time transcription is planned.

16 kHz

Transcript sidebar

Search the whole transcript, follow along as it plays, and export to TXT / SRT in original, translated or bilingual form.

TXTSRT

Adaptive dub speed

Speeds up to catch fast speech and settles back into the stable range afterwards, so the dub never drifts further and further behind.

0.8× – 1.5×

Word-by-word highlight

Subtitles highlight word by word, karaoke style, making it much easier to follow along by ear.

Subtitle styling

Set font, size and color separately for the original and the translation, and drag the subtitle block wherever it suits you.

Learning mode

Mark the languages you are learning, and those videos ask first: train your ear on the original, or just listen to the dub.

Ads stay out of the way

Dubbing pauses when YouTube rolls an ad and resumes afterwards, so the ad copy never gets read out too.

Bring your own keyoptional

Plug in your own DeepSeek, OpenAI or Gemini translation key and Azure speech key. Configuring none of them is perfectly fine.

DeepSeekOpenAIGeminiAzure
Translation source

Choose the translation method that fits you best

You can watch right away with the default settings. When needed, switch translation methods based on the content or your preferences.

Google TranslateChatGPTDeepSeekGemini
Plans & pricing

Start free, upgrade when you need more

Free planFree forever
$0
Google TranslateUnlimited
AI translationPaid plans only
AI dubbingUnlimited daily use · up to 40 minutes per video
Add to Chrome for free
Monthly plan30 days
$5/ month
Google TranslateUnlimited
AI translationUp to 20 videos per day
AI dubbingNo duration limit

Advanced users can also use their own AI or voice service keys.

The free plan includes Google Translate and AI dubbing; AI translation is available on paid plans.

FAQ

Still on the fence?

Can I use my own API key?
Yes. Translation accepts your own DeepSeek, OpenAI or Gemini key, and dubbing accepts a Microsoft Azure speech key. It is entirely optional — CCDub works with no keys configured at all.
DeepSeekOpenAIGeminiAzure Speech
Keys stay in this browser. CCDub does not keep them as account data.
Does it work on videos with no captions?
Not yet. CCDub currently requires an existing caption track. Videos without captions are not supported yet; real-time transcription is planned.
Will the dubbing drift out of sync?
The dub is aligned to the caption timeline. When the original speech runs fast it speeds up to catch back up, then settles into the stable range, which keeps the error from accumulating.
How far does the free plan go?
The free plan has no daily cap on dubbing, allows up to 40 minutes per video, and includes five standard Microsoft voices plus a basic translation allowance. Upgrade when you need longer videos or heavier AI translation use.
Does it work on my phone?
On Android, yes — through a browser that supports Chrome extensions. iPhone and iPad cannot run browser extensions, so they are not supported for now.
What happens to my voice cloning recording?
The recording is used to build your personal voice. The resulting voice list is stored in this browser, and you can delete any clone from the extension whenever you want.
Can I cancel my subscription?
Yes. Turn off auto-renewal any time under "View bill" — everything keeps working until the period you already paid for ends.
Before you start

Supported devices and known limitations

Better to be upfront before you install.

Device support
DesktopGoogle Chrome ✓
AndroidCompatible browser ✓
iPhone / iPadNot supported yet

On Android, you need a compatible browser that supports Chrome extensions; CCDub is not a standalone Android app.

Before you install

Results are best when a caption track exists; translation quality depends on the original captions, and recognition errors in YouTube auto-captions carry into the translation.

Videos without a caption track are not supported yet; real-time speech recognition is planned for a future release.

Live streams are not supported yet.

If you're a creator, YouTube Studio lets you add a free CCDub translation and dubbing link to your video description in one click.

Get started now

Open YouTube and understand foreign-language videos instantly

Start for free. The free plan includes unlimited dubbing per day, with a 40-minute limit per video.

Chrome Web Store 4.3 / 5 · 944+ user ratings
CCDub — YouTube Subtitle Translation & AI Dubbing