Use Cases | sync. labs

Sync Labs’ lip sync API enables four primary use cases: video dubbing, e-learning localization, personalized video messaging, and content creation. It fits into any workflow where you need to change what someone appears to say in a video — whether that means translating into a new language, personalizing a message, or creating entirely new dialogue. Here are the most common applications.

E-Learning & Training

Localize training content for global teams.

Record an instructor once. Then generate versions in every language your team needs — with lip movements that match the translated audio. Employees get training in their native language without hiring voice actors for each locale or re-shooting video.

Sync Labs’ lipsync models work with any language audio, so you can scale from one language to dozens without changing your pipeline.

Build a translation pipeline ->

Marketing & Personalized Outreach

Create personalized video messages at scale.

Record a single sales video. Use text-to-speech to generate a custom greeting for each prospect — “Hi Sarah, I noticed your team at Acme is…” — and lip sync it onto the original recording. One take becomes thousands of personalized videos.

This works for sales outreach, onboarding sequences, customer success check-ins, and event invitations.

See the personalized video guide ->

Content Localization & Dubbing

Dub content for global audiences.

Traditional dubbing produces mismatched lip movements that break immersion. With Sync Labs, the dubbed video shows lip movements that match the translated audio. Viewers in every language get the same natural viewing experience.

Use the built-in ElevenLabs integration to handle TTS and lipsync in a single API call, or bring your own translated audio.

Build a dubbing pipeline ->

Entertainment & Media

Studio grade post-production dubbing.

Sync Labs films and TV shows with natural-looking lip movements in any target language. sync-3 is the most advanced lipsync model to date with built-in intelligence to handle even the toughest studio edge cases. Side angles, low light, rapid movement and so much more, all handled by sync-3 out of the box. You can even edit dialogue in post without ADR sessions.

sync-3 builds a wide spatial context to not just lipsync the scene, but to understand it.

Explore sync-3 ->

Gaming & Animation

Lip sync for game characters and animated content.

Generate lip-synced dialogue for in-game characters from text or audio. Localize game cutscenes into multiple languages with matching lip movements. Create animated content where characters speak naturally in any language.

The API handles human-like faces, making it suitable for realistic and semi-realistic character styles.

Get started with the API ->

Social Media & Creator Tools

Build lip sync features into creator platforms.

Power translation features in video editing tools. Let creators dub their content into new languages with a single click. Build TTS-to-video features where users type text and get a talking head video.

The Batch API handles high-volume processing for platform-scale workloads.

See the TTS lip sync guide ->

Which model fits each use case?

Use Case	Best Model	Key Benefit
E-learning & training localization	lipsync-2	Fast, cost-efficient lipsync with solid quality across languages
Personalized video outreach at scale	lipsync-2 or lipsync-1.9.0-beta	General-purpose quality or legacy maximum-speed processing for simple videos
Content localization & dubbing	sync-3	Most advanced production-quality lipsync for complex scenes, obstructions, and extreme angles
Premium film & TV dubbing	sync-3	4K native output with global shot understanding and stronger performance preservation
Emotional performance editing	react-1	Emotion prompts + facial expressions + head movements (up to 15s)
Platform-scale creator tools	lipsync-2 + Batch API	Cost-efficient processing plus up to 500 generations per batch on Scale+ plans

Which Guide Should You Follow?

Goal	Guide
Translate a video end-to-end (transcribe, translate, TTS, lipsync)	Video Translation API Guide
Dub a video with pre-made translated audio	Video Dubbing API Guide
Generate talking head videos from text	Text-to-Speech Lip Sync Guide
Create personalized videos for outreach	Personalized Video Messaging
Process hundreds of videos at once	Batch API
Add emotion and expressions to short clips	React Models

Frequently Asked Questions

Can Sync Labs dub videos into other languages?

Yes. Sync Labs is designed for multilingual video dubbing. Provide a translated audio track in any language and Sync Labs generates lip movements that match the new audio naturally. You can combine Sync Labs with TTS services like ElevenLabs to build end-to-end translation and dubbing pipelines.

Which use case is cheapest?

Cost depends on video duration and the model you choose, not the use case. The lipsync-1.9.0-beta model offers the fastest and most affordable processing for simple videos. Use the cost estimation endpoint to check pricing before submitting a generation for any workflow.

Can I use Sync Labs for AI avatars?

Sync Labs is optimized for lip syncing real human faces in video, not for generating AI avatars from scratch. You can use Sync Labs to make a recorded person appear to say new dialogue by providing different audio, which is commonly used for personalized video messaging and content creation.