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Video ad localization

Localize video ads without a reshoot. Dub the ad that already works.

Video ad localization doesn't have to start with a new shoot. Upload a finished ad or UGC clip you have the rights to and choose one of 28 languages. DubSync translates the speech, gives each speaker a voice created from their own, keeps your music and background sound, and returns a dubbed MP4. Lip-sync is an optional paid add-on for ads where a face speaks to the camera.

Translate my video intoUpload my ad

Pro: 7 days free for eligible new subscribers, with 60 minutes. Card required. Then $29.90/month; cancel before the trial ends to pay nothing. Trial minutes expire after 7 days.

Upload an MP4, MOV or M4V. You see the minutes and the cost before anything starts.

EnglishOriginal

What is said: I filmed this ad once. Now the same ad speaks Spanish, Portuguese, and more without a reshoot.

What is said: Filmaba este anuncio una vez. Ahora el mismo anuncio habla español, portugués y más sin volver a grabar.

What is said: Eu filmei este anúncio uma vez. Agora, o mesmo anúncio fala espanhol, português e mais, sem refilmagem.

Demo clip: an AI-generated scene with a fictional character. Dubbed with VDub v2, the model DubSync runs; lip-synced tracks use VSync v2.

Lip-sync shown in these examples is an optional paid add-on, separate from the dubbing trial.

28 target languages
Lip-sync as a paid add-on
Background audio kept
MP4 out, no visible watermark
Pay per input minute

Dub, don't reshoot

Keep the ad that works. Change the language.

Full localization adapts the speech, the text on screen, the offer and the legal lines, often with a local shoot or a new voice-over session in every market. When an ad already performs at home, there is a shorter first step: keep the picture, the edit and the music, and change only what is said.

A local reshoot and a dub of the same ad, side by side
	A local reshoot	A DubSync dub
What changes	Talent, set, script and edit	Only the spoken language
What the test tells you	Whether a new ad works there	Whether your proven ad works in the local language
Text on screen and the offer	Written for the market	Untouched: captions, prices and legal lines are yours to redo
Cultural fit	Built around local references	Carries the references of the original
What you pay for	A production in every market	Input minutes: the ad's length, once per language

Two published cases

A dub is the first test. Adaptation is the next step.

A June 2025 Think with Google article, written by Google staff, describes how advertisers took campaigns abroad.¹ Two of its cases are video ads, at different stages of the same job.

Dubbed ads: Amobear
- Germany and Spain
- Dubbed with Google's tool
The Vietnamese app developer used Google's dubbing tool to make German and Spanish video ads for its face-swapping app. Google reports that click-through rate rose 45% and return on ad spend 8% in Germany, and that return on ad spend grew 13% in Spain.¹
Adapted ads: Gaijin Entertainment
- Korea
- Translated against adapted
For its game War Thunder, the company made video ads with translated voice-overs and text, and others built around Korean landscapes, history and culture. Google reports that the adapted ads drew 16% higher conversion at a 14% lower cost per acquisition than the translated ones.¹

These are Google's figures, the first case is about Google's own tool, and the article gives no test details. Neither case involved DubSync, and neither is a forecast for your campaign. Read them as an order of work: dub first to see whether a market responds, then adapt the creative where it does.

Lip-sync

A face speaking to the camera is where lip-sync matters.

A typical UGC ad is one person talking into a phone. After a plain dub, the voice is in the new language while the mouth still forms the original words, and a close-up shows it.

A voice-over ad doesn't need lip-sync

This demo coffee commercial is narration over product shots. No speaker is on screen, so a plain dub is enough.

The clip at the top of the page is the opposite case: one person talking to the camera. Both of its dubbed tracks are labeled lip-synced. They also went through the paid add-on, so the mouth follows the new speech.

EnglishOriginal

What is said: One film, one voice, ready for every market where your coffee is sold.

Demo clip: an AI-generated scene with a fictional character. Dubbed with VDub v2, the model DubSync runs; lip-synced tracks use VSync v2.

Add lip-sync

UGC and testimonial-style ads where the speaker's face fills the frame.
Founder and spokesperson ads shot close up.

Skip it

Voice-over on product or lifestyle footage.
App demos, gameplay, animation and motion graphics.
Edits where the speaker appears only briefly: the whole video is charged, including scenes without a face.

Lip-sync is an optional paid add-on for a finished dub of up to 5 minutes. It is priced per minute, and you see the quote before it starts. It works best with a clearly visible face, so watch the result at full size before the ad goes live. How the lip-sync add-on works

What a dub doesn't translate

The speech changes. Everything you can read stays as it was.

DubSync replaces the speech and nothing else. Go through this list before the dubbed file goes live.

On-screen text
Titles, end cards and buttons drawn into the video stay in the original language.
Captions
Burned-in captions no longer match the voice. DubSync doesn't make caption files, so add new ones in your editor.
Prices and offers
A spoken price is translated as a sentence. Nothing converts the currency or checks that the promo code works in the new market.
Legal lines
Disclaimers and required wording differ by country and product category. Have someone who knows the local rules write them.
Ad copy and landing page
The headline, the primary text and the page behind the click are separate jobs. A German ad that leads to an English checkout is half localized.
The exact wording
There is no script editing, so you can't tune the hook word by word. Have a native speaker listen before you spend on media.

A market test, step by step

Short ads keep the test cost low.

Input minutes are the length of the original, counted by the second and once for each target language. A 30-second ad uses half a minute per language.

Pick a proven ad
Choose a clip with a track record at home. Cut any line that only makes sense there: a local holiday, a store name, a pun.
Upload the clean export
MP4, MOV or M4V, up to 150 minutes and 1 GB. The spoken language is detected for you. There is no link import.
Dub one language first
Choose one of the 28 target languages, check the minutes and the cost, confirm your rights and every speaker's consent, and start. Each further language is its own project.
Finish the ad by hand
If a face talks, add lip-sync as a separate paid step. Then redo what the dub left alone: captions, end card, price, legal line, ad copy and landing page.
Get a native check, then test small
Ask a native speaker to check the brand name, the offer and the call to action. Run the ad on a small budget, and adapt or reshoot only where the market responds.

AI labels

Check the label rules wherever the ad runs.

A lip-synced dub shows a real person speaking a language they didn't record. Platforms and laws treat that edit differently, and the rules change.

What three platforms and EU law say today

TikTok ads: significantly edited media needs TikTok's AI-generated content label or your own clear disclaimer, caption, watermark or sticker. One listed example is AI voice cloning that makes the main subject say something they didn't actually say. TikTok says it rejects or restricts an ad when it finds AI-generated content that wasn't disclosed.⁵
YouTube: creators must disclose realistic AI content that makes a real person appear to say or do something they didn't. Its examples exempt cloning your own voice for a voice-over or dub.⁶ That page is guidance for creators who upload videos, so check your ad platform's policy for a campaign as well.
Meta ads: Meta labels ads made or significantly edited with its own generative AI tools. In a June 2026 update it said it would also begin detecting ads created or edited with third-party AI tools, through industry-standard signals, and label them on the About this ad screen in the ad's menu.⁷ For ads about social issues, elections or politics, the advertiser must already disclose image, video or audio created or edited with AI.⁸
European Union: the AI Act's transparency obligations apply from August 2, 2026. Whoever uses generative AI to make a deepfake has to disclose that it is artificially generated or manipulated. The term covers image, audio or video that resembles a real person and would wrongly appear authentic.⁹ Ask a lawyer whether your dubbed ad falls under it.

None of these rules treats a translated dub of a hired creator's voice as its own case, and YouTube's exemption covers only your own voice. TikTok's advice when you are unsure is to label.⁵ Follow it wherever someone else's voice or mouth has been changed.

Questions

Questions before you start

What is video ad localization?

Adapting a video ad for another market: the spoken language, the text on screen, the offer, the legal lines and sometimes the creative idea itself. DubSync does one part of that job. It replaces the speech with a dub in the new language and returns an MP4. Text, prices and legal wording stay with you.

Can I import an ad from an ad account or paste a link?

No. You upload the video file itself: MP4, MOV or M4V, up to 150 minutes and 1 GB. Use the original export from your editor or your asset library.

Can I change the translated hook or call to action?

No. DubSync doesn't offer script editing, so you can't rewrite a line of the dub. If the hook lands badly, change the line in the source ad and dub it again. That is a new project and uses the ad's minutes again.

What does it cost to localize one ad into five languages?

A dub is paid in input minutes: the length of the ad, once for each language. Five languages are five projects, and there is no batch upload. Lip-sync is a separate add-on priced per minute. You see each cost before it starts.

Can I dub a UGC creator's ad without asking them?

Only if your agreement with them already covers it. The dub creates a voice from theirs, and you confirm every speaker's consent before each project. Check that the agreement names an AI voice, the new languages and the countries where the ad will run. If it doesn't, ask the creator first.

Will a dubbed ad perform like the original?

Nobody can promise that. A dub carries the same creative into a new language, and a market can still react differently to the humor, the references or the offer. Treat the first dubbed ad as a test on a small budget.

Plans from $4.90/month. You see the minutes and the cost before anything starts. See pricing

Sources

Think with Google. How businesses use AI to gain a local edge and succeed abroad. Published Jun 24, 2025; accessed Oct 5, 2026.
Davis+Gilbert LLP. Importance of Digital Replica Consents Under the SAG-AFTRA Commercials Contract. Published Jan 20, 2026; accessed Oct 5, 2026.
Tennessee Office of the Governor. PHOTOS: Gov. Lee Signs ELVIS Act Into Law. Published Mar 21, 2024; accessed Oct 5, 2026.
US Federal Trade Commission. FTC's Endorsement Guides: What People Are Asking. Accessed Oct 5, 2026.
TikTok Business Help Center. Misleading and false content: TikTok Advertising Policies (last updated April 2026). Accessed Oct 5, 2026.
YouTube Help. Disclosing use of GenAI content. Accessed Oct 5, 2026.
Meta Newsroom. Expanding GenAI Transparency for Meta's Ads Products (updated June 1, 2026). Published Feb 3, 2025; accessed Oct 5, 2026.
Meta Help Center. How AI-generated images in ads are identified and labeled on Meta. Accessed Oct 5, 2026.
European Commission. Code of Practice on Transparency of AI-generated Content. Accessed Oct 5, 2026.

Start with one ad

Take your best ad to one new market.

Upload it, see the minutes, then decide.

Only upload videos you have the rights to, with every speaker's permission.