There’s a market sitting right in front of you and there’s a good chance you’re not talking to it.
In the US alone, over 67 million people speak a language other than English at home. Across the UK, Canada, and Australia, multilingual communities account for tens of millions more potential customers. If your marketing videos only exist in English, you’re effectively invisible to a significant portion of the market you could be reaching.
The problem isn’t ambition. It’s cost. Hiring translators, re-booking studios, re-recording voiceovers, and re-editing footage for each language has traditionally been the kind of budget that only large brands could absorb. For most SMBs, multilingual video marketing has felt firmly out of reach.
That calculation is changing and fast.
→ Try Synthesia free no credit card required.
(This article will show you exactly how to use it.)
The Multilingual Market Opportunity SMBs Are Missing
The business case for multilingual marketing isn’t aspirational it’s statistical. Video marketing has reached near-universal adoption, with 91% of businesses now using video as a marketing tool, and 93% of marketers reporting strong ROI. But here’s what most SMB owners overlook: the businesses winning that ROI in multilingual markets are increasingly doing it with AI not agencies.
AI video generation has moved from experimental to production-ready, with 34% of marketing teams now using these tools a rapid scaling from just 18% in 2025. AI tools are delivering 40% cost reductions in video production.
The competitive window for early movers is still open. If you serve immigrant communities, run an e-commerce brand with international reach, or market in multicultural metros like London, Toronto, or Miami, multilingual video marketing videos for small businesses using AI is the most practical lever you haven’t pulled yet.
How Synthesia Handles Language Switching
Synthesia is an AI video platform used by over one million users and trusted by over 90% of the Fortune 100. For SMBs, its core appeal is straightforward: you type a script, pick an avatar, choose a language, and Synthesia renders a polished video in minutes no camera, no microphone, no green screen required.
The language coverage is what makes it genuinely useful for multilingual marketing. Synthesia supports 160+ languages and accents, with 240+ diverse and expressive AI avatars. The platform’s video player can automatically display videos in each viewer’s preferred language.
For AI dubbing, Synthesia supports 140+ languages including right-to-left scripts and regional variants with popular options including English, Spanish, French, German, Portuguese, Italian, Dutch, Russian, Mandarin Chinese, Japanese, Korean, Arabic, Hindi, Bengali, Turkish, Vietnamese, Thai, Indonesian, Polish, and Swedish.
Synthesia Language Coverage: Quick Reference
| Language Group | Examples | Notes |
| European | Spanish, French, German, Italian, Dutch, Polish, Swedish | Regional accents available (e.g. Castilian vs. Latin American Spanish) |
| Asian | Mandarin, Japanese, Korean, Vietnamese, Thai, Indonesian | Right-to-left scripts supported |
| South Asian | Hindi, Bengali | Natural-sounding TTS |
| Middle Eastern | Arabic | RTL script, multiple dialects |
| Slavic | Russian, Polish | Multiple accent variants |
| African & Others | Swahili + 100+ more | Growing library |
AI Dubbing covers 30+ languages with lip-sync, while Enterprise plans include 1-click translation to 80+ languages. The same avatar can speak any supported language.
Step-by-Step: Creating Multilingual Marketing Ads with Synthesia
Step 1 – Write Your Core Ad Script in English
Start with English. Keep your script tight between 30 and 90 seconds for most ad formats. Focus on a single customer problem and a single call to action. Avoid idioms that don’t translate cleanly (“hit the ground running” means nothing in a direct translation to Mandarin).
Practical tip: Write as if you’re explaining to someone who has never heard of your product. Plain language translates better and performs better across all audiences.
Draft your script inside Synthesia’s built-in AI script assistant, which is available from the Starter plan upward, or paste in your own. Either way, the English script becomes your master template.
→ Start your free Synthesia video here
Step 2 – Use Synthesia to Clone the Script Into Target Languages
Once your English video renders, Synthesia’s translation workflow allows you to generate versions in your target languages without rewriting anything from scratch. After a dubbed video finishes generating, you can open it in the editor and correct any line in the translated script and retranslating does not consume additional credits, so you can iterate on accuracy without worrying about the cost.
For SMBs, the practical sequence looks like this:
- Create your English master video
- Select your target languages (Spanish, Mandarin, Arabic, etc.)
- Let Synthesia generate translated versions the avatar’s lips and voice sync to each language automatically
- Review and fine-tune the translated script inside the editor
Organizations can generate a single master video and translate it into multiple languages within minutes, significantly cutting costs and time compared to traditional subtitling or dubbing.
Step 3 – Select a Region-Appropriate Avatar and Voice
This step matters more than most guides acknowledge. Showing a South Asian avatar in your Hindi ad and a Latin-presenting avatar in your Spanish ad isn’t just good optics it signals cultural familiarity to your audience. It’s the difference between a translation and a localization.
Synthesia’s library of over 230 stock AI avatars offers a diverse range of ethnicities and genders. Browse by appearance and select avatars that visually reflect the community you’re speaking to. Then pair the avatar with a voice that carries the right regional accent Latin American Spanish rather than Castilian, for instance, if you’re targeting a US Hispanic audience.
High-quality voice cloning technology creates an accurate and expressive copy of a voice, and with built-in AI tools and an AI video assistant, no video editing skills are needed.
Step 4 – Fine-Tune Pronunciation and Lip-Sync
AI-generated voices occasionally stumble on brand names, product names, or technical terms. Synthesia’s script editor lets you adjust phonetic spelling directly if your product name is “Zyrox,” you can type “Zy-rox” or a phonetic approximation until the voice pronounces it correctly.
Synthesia’s October 2025 Express-2 release introduced full-body movement, natural co-speech gestures, and micro-expressions at 1080p/30fps with no length cap the era of stiff-looking AI avatars is largely over.
Review each language version before export. Pay attention to:
- Pronunciation of your brand or product name
- Pacing (some languages naturally run longer than English at the same word count)
- Subtitle accuracy if you’re enabling captions
Subtitles are auto-generated for dubbed videos and viewers can toggle them on or off in the Multilingual Player.
Step 5 – Export and Deploy Across Ad Platforms
Once your videos are reviewed and approved, export them as MP4 files (available on all paid plans). Here’s how to deploy them effectively on the platforms most relevant to SMBs:
Facebook & Instagram Ads Facebook remains one of the most powerful platforms for multilingual targeting. Use Facebook’s detailed targeting to reach audiences by language preference you can target Spanish speakers in the US, Arabic speakers in the UK, or Mandarin speakers in Australia as distinct audience segments. Upload the corresponding language version of your video to each campaign.
YouTube Ads YouTube allows language targeting within Google Ads. Create separate ad campaigns for each language, upload the Synthesia-generated video for that language, and set audience targeting to match. YouTube is the most widely used video marketing platform, with 82% of marketers using it.
TikTok TikTok’s algorithm self-selects by language community. A Spanish-language video will naturally surface to Spanish-speaking users. Keep exports at vertical (9:16) format for TikTok and Instagram Reels.
Landing Pages Landing pages with embedded video convert at 86% higher rates than text-only equivalents. Embed the language-appropriate version of your video on language-specific landing pages for maximum impact.
Cost Comparison: Synthesia vs. Hiring a Multilingual Production Agency
Here’s where the numbers get stark.
For a 3-minute video, localization into five languages adds $3,000 to $10,000 on top of the original production cost. That’s per round of localization and it doesn’t account for reshoots when your product changes or your offer updates.
Content localization through an agency typically runs $600 to $2,000 per language per video.
So a single 60-second ad in five languages English, Spanish, Mandarin, Arabic, and French could cost you $3,000 to $10,000 on top of the original production fee, with a 2-4 week turnaround per agency project.
Compare that to Synthesia:
| Scenario | Traditional Agency Route | Synthesia |
| 1 video in English | $1,000-$5,000 | Included in subscription |
| + 4 language versions | $2,400-$8,000 | Included (Starter/Creator) |
| Turnaround | 2-6 weeks | Minutes to hours |
| Script change/update | Re-bill from scratch | Edit and re-render at no extra cost |
| Monthly subscription | N/A | $18-$89/month (annual billing) |
The Starter plan, now at $18/month when billed annually, makes Synthesia accessible for small businesses. Starter is probably the best overall value for most users it often replaces several separate workflows at once.
Organisations report savings of up to 80% on video production costs when switching from traditional to AI-assisted workflows.
Tips for Cultural Sensitivity in AI-Generated Ads
Translation is the floor, not the ceiling. A word-for-word translated script in the wrong cultural register can still alienate your audience. Here’s what to layer on top of Synthesia’s technical capabilities:
1. Research before you script. Colours, gestures, and references carry different meanings across cultures. White is associated with mourning in several East Asian cultures; thumbs-up is offensive in some Middle Eastern contexts. If you’re using visual elements alongside your avatar, review them with cultural awareness.
2. Adapt the offer, not just the words. A discount framing that resonates in the US (“Save 30% today!”) may feel cheap or distrustful in markets where relationship and trust are primary purchase drivers. Consider softening urgency-based CTAs for certain audiences.
3. Use regional accent options intentionally. Many languages include regional accent options you can target British or American English, Latin American or Castilian Spanish rather than defaulting to a generic regional variant. Audiences notice, and they respond better to the accent that sounds like home.
4. Have a native speaker review the output. Synthesia’s translations are strong, but AI can miss idioms, brand-unfriendly phrasing, or tone mismatches. A 15-minute review from a bilingual colleague or a low-cost freelance proofreader (not a full translator) is worthwhile for any campaign you’re investing ad spend behind.
5. Match avatar presentation to your market. Professional attire reads differently across cultures. A formal suit works for financial services globally; a casual look may be more effective for lifestyle and consumer brands in Western markets.
Conclusion: Multilingual Marketing Is Now Within SMB Reach
You don’t need a production agency, a translation team, or a six-figure budget to market in multiple languages. Synthesia lets anyone with zero video production experience create studio-quality content at scale with support for 140+ languages and 160+ AI avatars.
The opportunity is real, the tools are affordable, and the competition among SMBs in multilingual markets is still thin. The question isn’t whether multilingual marketing videos for small businesses using AI are worth pursuing the data makes that clear. The question is whether you act on it before your competitors do.
→ Create your first multilingual video free on Synthesia no credit card required.
Affiliate disclosure: The AI Outlier may earn a commission if you purchase a Synthesia plan through links in this article. Our editorial opinions remain independent.