How to Localize AI Video Ads Into 29 Languages

The fastest way to localize a video ad with AI is to keep the footage and change only the words: translate the script, generate a new voice track in the target language, and re-sync the speaker's lips to match — no reshoot, no new actor booking per market. On Flovaly, that's exactly what Re-voice mode does, and because the underlying voice model speaks 29 languages, one clip can become a dozen localized versions for a flat 25 credits each.

What "localizing with AI" actually means

Video localization used to mean three separate jobs: a translator for the script, a voice actor (or several) for each target language, and a video editor to match new audio to the speaker's mouth. AI collapses the last two into one step. You still need a decent translation of your script — that part is still a human or LLM translation task, not something Flovaly does for you — but turning that translated script into a lip-synced clip is now one generation instead of a studio booking.

The workflow on Flovaly

1. Start with an ad that already works. Open the Studio and switch to the Re-voice tab, then upload the source video — MP4 or MOV, up to 100MB, with a clearly visible speaking face.
2. Write (or paste) the translated script for your target market, up to 1,000 characters. This is the step where the language actually changes — Flovaly doesn't auto-translate, so bring a script you already trust, whether that's from a translator or an LLM pass you've checked yourself.
3. Pick a voice from the curated list. Every voice runs on the same multilingual speech model, so any voice can speak any supported language — you're choosing a tone (warm, authoritative, friendly), not a language.
4. Leave Burn captions into the output on if you want on-screen text in the same language as the new script — useful for sound-off placements, which is most short-form social inventory.
5. Generate. sync-lipsync v2 Pro re-syncs the mouth to the new audio and leaves the rest of the shot — framing, camera work, the speaker's appearance — untouched. Repeat per target market with a new script each time.

No existing footage to start from? Talking Actors mode builds a clip from a still image and a script instead, from 7 credits — see how OmniHuman 1.5 powers Talking Actors for the from-scratch path. Re-voice is the better fit specifically for localization, because it reuses a hook that's already proven rather than generating a fresh take per language.

How many languages does this actually cover?

Every Flovaly voiceover — Talking Actors and Re-voice alike — runs on ElevenLabs' eleven_multilingual_v2 speech model, which ElevenLabs' own documentation lists as supporting 29 languages, including Spanish, French, German, Portuguese, Italian, Japanese, Korean, Mandarin, Hindi, Arabic, and Polish. The honest caveat: Flovaly's curated voice list is eight voices, all tagged with American or British English accents — there's no dedicated library of native French, Japanese, or Arabic voice talent to pick from. The multilingual model still produces intelligible, natural speech in the target language from those same voices, but a native speaker may notice the underlying English-trained accent more than they would from a voice recorded natively in that language. For localization at real volume with native-accented voice options, see how Flovaly compares to a platform built specifically for that in Flovaly vs HeyGen— HeyGen's 175+ language library with dedicated translation tooling is a genuine advantage there.

What it costs to localize into many markets

Re-voice is priced at a flat 25 credits per clip regardless of language, resolution, or duration, since the output length matches your source video. Localizing one 15-second ad into ten markets costs 250 credits — about $48 on the $29 Starter plan's 150 monthly credits (so it would need to span two billing cycles, or an upgrade), or comfortably inside a single month on the $99 Pro plan's 500 credits. For the fuller unit-economics picture across every Flovaly generation type, see how much AI video ads cost in 2026. Building each language version from scratch with Talking Actors instead runs 7 credits per language at 5 seconds, 720p — cheaper per clip, but only worth it if you don't already have working footage to reuse.

Getting a translated script right

• Keep sentences short.Long, clause-heavy sentences are harder for the lip-sync model to match convincingly to your original footage's pacing.
• Avoid idioms and wordplay. A hook built on an English pun rarely survives translation — write (or ask your translator for) a version that lands the same emotional beat natively, not a literal word-for-word rendering.
• Have a native speaker check it. Machine translation is a reasonable first pass, but a script that reads as slightly off in the target language will undercut an otherwise strong ad — this is worth the extra review step before you spend the 25 credits.
• Match the register to your source read. If the original clip is casual and direct-to-camera, keep the translated script casual too — a stiffly formal translation of a casual hook reads as obviously localized rather than native.

When to localize vs. re-shoot

Re-voice is the right call when the visuals in your ad don't need to change market to market — a product demo, a hook that works on tone rather than cultural reference, a testimonial-style read. It's the wrong call when the ad leans on a visual joke, a location, or a cultural reference that won't travel — that needs a different clip, not just a different script. And whichever route you take, the same authenticity habits apply across every language version — see AI UGC ads that don't look AI for what makes a delivery sound spoken rather than read, in any language.

FAQ