How to translate video to Chinese
- Open the dubbing card at opendub.app, in the browser on a computer or an Android phone. On an iPhone, see below.
- Choose the video. An MP4, MOV or WebM file from your own device, up to five minutes long.
- Leave Spoken in on Auto-detect, or choose English.
- Check that Dub into says 简体中文 (Simplified Chinese). The links on this page open the card with 简体中文 (Simplified Chinese) already chosen.
- Choose the free voice. On a computer it is the option marked Free voice and In this browser; on an Android phone it is the Free voice marked On this phone.
- Start the dub. The first dub downloads up to about 750 MB of models, once; your browser keeps them for the next video.
- Download the result. Downloading the dubbed video takes a free sign-in, and the download then continues on its own, with no re-dub.
An English to Chinese video translator on your own device
When you translate video to Chinese with the free voice, every step runs in the page. Whisper transcribes the English speech; each sentence is translated into Chinese, by Chrome's own translator where the browser has one, otherwise by an English-to-Chinese model (opus-mt-en-zh) that downloads once; a stock voice that speaks Chinese reads each line; and the lines are fitted back into the video, each one timed to the moment it replaces. Nothing needs a key, and trying it needs no account.
Simplified or Traditional Chinese
Dub into offers both 简体中文 (Simplified Chinese) and 繁體中文 (Traditional Chinese), and the free stock voice speaks both. The translation is written in Simplified Chinese first; for 繁體中文 the page converts it to Traditional characters on your device before the voice reads it and the subtitles are written. The links on this page choose 简体中文; switch Dub into to 繁體中文 if that is what your viewers read.
Where you can translate video to Chinese for free
- On a computer, in the browser. Free with the stock voice. If your browser cannot run it, the card says so before you start and suggests Chrome, Edge or Firefox.
- On an Android phone, in the browser. Free with the stock voice, which runs on the phone.
- On an iPhone. The free voice is still a preview there. To try it, open opendub.app/?phonevoice=1. Without that, the page on an iPhone offers to send the link to your computer.
Chinese to English works too
The other direction is free in the same way: a Chinese video can be dubbed into English in the same card, with a Chinese-to-English model (opus-mt-zh-en). Choose English under Dub into. For that direction, see Translate video to English.
What you get when you translate video to Chinese
- The dubbed video, with the speech in Chinese and Chinese subtitles in the picture.
- The dub audio as WAV.
- Subtitles as SRT, in Chinese and in the original language.
There is no watermark and no logo: OpenDub leaves the picture as it is, apart from the subtitles.
Limits when you translate video to Chinese for free
- It is a stock voice, not a clone of the speaker.
- The original voice is turned down under the Chinese, not removed.
- Up to five minutes per video in the browser. The OpenDub app on your computer has no length limit; see AI dubbing for long videos.
- The free translation models cover English to Chinese and Chinese to English. For Chinese and another language, the free route may have no translator for that pair.
- It does not change the lips in the picture.
- It works on a video file on your device, not on a link to a video online.
To keep the speaker's own voice in Chinese
A clone of the speaker's voice needs a different voice model: OmniVoice in the free OpenDub app on your computer, for non-commercial use, or your own Higgs Audio or ElevenLabs key in the browser, paid to that provider. The video translator page explains each one, and Local AI dubbing covers the app.
Is the video uploaded?
No. When you translate video to Chinese with the free voice, speech recognition, translation and the voice all run in your browser, and the video stays on your device. The privacy page has the details.
This is the same AI dubbing as on the OpenDub home page, which is open source under AGPL-3.0-or-later. The OpenDub home page is also in 简体中文 and 繁體中文. To change a video into another language, see the video language changer.
Questions
Can I translate video to Chinese for free?
Yes, from English. In the browser on a computer or an Android phone, an English video can be dubbed into Chinese for free in a stock voice, with no key and no account to try, for videos up to five minutes; downloading the dub takes a free sign-in. The first dub downloads up to about 750 MB of models, once.
Do I need a subscription?
No. The free voice in the browser needs no subscription, no payment and no API key. Downloading the dub takes a free sign-in.
Is there a watermark on the dubbed video?
No. OpenDub adds no watermark and no logo to the dubbed video. The picture is left as it is; the only thing drawn on it is the subtitles in the new language.
Can I translate a Chinese video to English?
Yes, for free in the same way. Choose English under Dub into.
Does it work on my phone?
On an Android phone, yes, in the browser. On an iPhone the free voice is still a preview, at opendub.app/?phonevoice=1.
Will the Chinese voice sound like the original speaker?
Not with the free voice: it is a stock voice, and the original voice is turned down under it. To clone the speaker, use OmniVoice in the OpenDub app on your computer, or your own Higgs Audio or ElevenLabs key.
Do I get Chinese subtitles?
Yes. They are in the picture of the dubbed video, and you also get them as an SRT file, together with an SRT file in the original language.
Can I dub into Traditional Chinese?
Yes. Choose 繁體中文 under Dub into. The free stock voice speaks it, and the subtitles are written in Traditional characters.