Sync.so
A professional AI lip-syncing and video localization platform focusing on film and television-grade lip synchronization. It can be used via a web studio or an API, and its official website introduces its self-developed synchronization model and watermark verification technology.
Updated: 2026-10-26
What is Sync.so?
Sync.so (sync.labs) does one very narrow yet extremely difficult thing: aligning audio with the lip movements of people in video footage. Its official website positions it as "ai lipsync and visual dubbing," targeting film, television, advertising and professional content production rather than short video entertainment. Structured information shows that its operating entity is Synchronicity Labs Inc. based in San Francisco, founded in 2023.
Who is it for?
- Post-production teams for film and television and advertisements: Converting already edited films into versions in another language while keeping the lip movements consistent.
- Localization suppliers for cinema or brand advertisements with strict requirements for image quality and delivery specifications.
- Post-production studios that need to batch-perform lip-sync across multiple videos can integrate via APIs.
- Producers who want to protect character performances and preserve the actors' original microexpressions.
Key features
5Sync-3 Model
Described on the official website as the "most intelligent lip-syncing model," it is adapted for different shooting environments.
Complex Scene Handling
The official website clearly lists that it can handle scenarios such as facial occlusion by objects, multiple faces, multiple camera angles, low light conditions, fast camera movements, and rapid dialogues.
4K ProRes Output
The official website lists 4K ProRes as one of the supported delivery specifications.
Pipeline Integration
Supports APIs and editing plugins, and the official website emphasizes "work in your usual way".
Watermark Verification
The official website introduces its proprietary watermark technology, which can be used to verify whether a certain video has been processed by Sync.
How to use Sync.so
- The official website emphasizes that the system will "adapt to each actor's performance", so when changing languages, prioritize preserving the original performance and do not sacrifice lip-sync material for copy rewriting.
- The official website states that for projects requiring absolute precision, you can directly contact the team for collaboration.
- For film and television-grade delivery, it is recommended to first conduct a sample test.
- When integrating with an existing post-production pipeline, first confirm the compatibility between the plug-ins and your own editing software.
- The watermark verification capability can be used to inform clients or platforms whether the material has undergone AI processing, which is very useful when disclosing the source of the content.
- You must obtain explicit authorization to use an actor's portrait and performance materials, and pay special attention to the scope of the contract for dubbing projects.
- The official website provides a pricing page and a "Contact Sales" portal.
- For enterprise purchases, it is recommended to confirm the delivery specifications and liability boundaries with the official in advance.
- The official FAQ mentions that the processing target is scenes with "existing actor performances", so it is recommended to keep a sufficiently clear mouth area in the original footage.
- The pronunciation rhythm varies across different languages.
- First, test a short sentence for dubbing and confirm that the lip-sync effect is acceptable before processing the entire video.
- For film and television level delivery, be sure to confirm the resolution, codec and timecode requirements with the technical team in advance.
Traffic & popularity
Data month Sep 2026
Sync.so receives about 588.9K visits per month and ranks #63,369 worldwide.
Monthly visits
12 monthsTraffic sources
- Direct55.1%
- Search21.5%
- Referrals12.3%
- Social5.1%
- AI assistants4.1%
- Other1.9%
Top countries
- United States25.1%
- India10.6%
- Brazil8.1%
- Ukraine4.9%
- Philippines4.8%
Estimated from third-party traffic data.
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