AI Video Translator and AI Dubbing

How does an AI video translator work?

An AI video translator replaces the speech in a video with the same words in another language. OnVid runs four steps on your upload. First it separates the speech from everything else in the soundtrack. Then it transcribes the speech with timestamps and detects the original language. Next, each line is translated into the language you picked and sized to fit the time the speaker originally took. Finally every line is spoken by a voice and mixed back over the untouched background, so the new speech starts where the old speech did. You download one MP4, ready to post. If you want to change the picture too, the AI video editor works on the visuals, while the translator only changes what is said. Some creators also search for free AI video dubbing tool. Some creators also search for AI video translator voice cloning. Some creators also search for AI video translator app online. Some creators also search for best AI video dubbing 2026.

Tip: Check proper names and acronyms in the source transcript beforehand to ensure accurate pronunciation across languages.

Can AI translate a video and keep my voice?

Yes. Choose My own voice and OnVid clones the person who speaks the most in the video, using their own lines as the sample. It needs about 10 seconds of their speech. The cloned voice then speaks the translation, and it's saved to your voices so you can reuse it on the next video. Other speakers get matched AI voices. Only clone your own voice or a voice you have permission to use.

What is AI dubbing, and how is it different from subtitles?

AI dubbing replaces the spoken words with new speech in another language, so viewers listen instead of read. That keeps attention on the picture and works on platforms where people scroll with the sound on. OnVid makes dubbed videos; it doesn't add subtitles or captions to the video.

Info: Cloud-based translation processes files remotely so your computer hardware never slows down during export.

Does the translated voice match the lips?

By default the new voice is placed over the original picture, which works well for narration, vlogs and clips where the speaker isn't in close-up. Turn on Lip sync and OnVid also re-animates the mouth so it moves with the new words. Lip sync costs extra and takes a few minutes longer.

What videos translate best?

Clips up to 60 seconds with clear speech: talking to camera, short tutorials, product demos, interviews with one or two people. Loud music over the voice, people talking over each other or very fast speech make the transcript less accurate. Use the free preview to check the translation and fix anything before you generate. A quick checklist before you upload: trim the clip to the part you want translated, make sure the voice is louder than the music, and keep one person speaking at a time where you can. Then run the free preview. Reading the translated lines takes a minute and catches the few things any video translator can get wrong, like a product name, a nickname or a number said out loud. Fix those lines, pick the voices you like, and the AI video translation that follows will sound like it was recorded in that language.

Can you edit the transcript and translation before dubbing?

Yes, and it's worth doing for names, brands and technical words. Press Preview translation and the video translator lists every line with its timestamp, who speaks it, the original words and the translation. Change any line, delete a line you don't want voiced, or swap the voice for a speaker. Nothing is charged for the preview; credits are only used when you press Translate video. If you change the target language after previewing, preview again or let OnVid translate it fresh when you generate.

How to translate video to English with AI

To translate video to English, upload the video, choose English as the language to translate into, and pick a voice option. The original language is detected for you, so a Spanish, Hindi or Portuguese clip works the same way. The English version keeps the original music and timing, and speaks each line where the speaker spoke it. The same steps work in the other direction, for example to translate English videos into Spanish or Portuguese for new viewers.

AI dubbing or a voice actor: which should you use?

A professional voice actor is still the right call for a film or a big campaign where every line is directed. For social clips, product demos, short lessons and quick tests in a new market, AI dubbing is faster and cheaper: a 30-second clip is translated in a minute or two for 600 credits, and you can make five language versions in the time it takes to book one session. Many creators test a market with AI dubbing first and only hire a voice actor once a language proves itself. You can make your first test on OnVid with a Pro plan.

Can you use it as a YouTube video translator?

Yes, for your own clips. OnVid works as a YouTube video translator for Shorts and short clips: download the video from your channel, upload the file (MP4 or MOV, up to 60 seconds), pick the language and voice, and post the dubbed version as a new Short or a translated upload. OnVid doesn't take YouTube links, so you need the video file, and you should only translate videos you own or have the rights to. Creators often publish a Spanish, Portuguese or Hindi version of their best Shorts to test new audiences before translating longer videos.