Video-to-audio lipsync
Generates lip-synced video from any video and audio pair, with the product positioned as a single API for lipsync workflows.
sync-3
Sync-3 is Sync’s lip-sync model for generating video that matches a target audio track. It is built for creators and teams that need performance-aware lipsync across varied footage and integration workflows.
Overview
Sync-3 is Sync’s lip-sync model for generating video that matches a target audio track. The product page describes it as the company’s most intelligent model and says it uses spatial reasoning to understand the scene, not just the mouth region.
It is positioned for creators and teams that need lip-syncing across a range of real-world footage, including movies, podcasts, games, and animations. The site also frames it as a way to reduce retakes and manual fixes while preserving acting performance across languages.
Core capabilities
Performance-aware sync
Built to preserve acting performance across languages, rather than only matching mouth movement in simple shots.
Spatial context handling
The homepage emphasizes spatial reasoning so the model can account for scene context, not just the face in frame.
Handles challenging shots
The model is presented as working across difficult footage such as sharp angles, side faces, close-ups, multiple speakers, low lighting, and shaky camera material.
Multiple workflows
Sync documentation and pricing reference multiple access paths, including web studio, API, SDKs, Premiere plugin, and a ComfyUI node.
Tiered usage controls
The pricing page lists usage-based billing and plan-based limits, including longer video length, more concurrent jobs, and batch API on higher tiers.
Practical use cases
Audio replacement for finished video
Generate lip-synced versions of existing footage when the audio track changes, without rebuilding the whole scene from scratch.
Cross-language dubbing
Localize spoken video across languages while trying to keep performance and timing aligned to the original acting.
Editor and workflow integration
Run lipsync inside editing or node-based workflows through the documented Premiere and ComfyUI integrations.
Challenging shot cleanup
Process footage with harder visual conditions such as angled faces, low light, or multiple speakers, where simple mouth matching may be less reliable.
API-driven generation pipelines
Build product or creator workflows around a single lipsync API, including higher-volume usage on paid plans.
Pros and Cons
Pros
- Supports a wide range of footage types, including movies, podcasts, games, and animations.
- The homepage highlights difficult visual conditions such as side faces, close-ups, multiple speakers, low lighting, and shaky camera footage.
- Multiple access options are documented, including API, SDKs, web studio, Adobe Premiere, and ComfyUI.
- Pricing includes a free Hobbyist tier plus paid plans for higher limits and team use.
Cons
- The documentation scope shown here is split across product pages and integration guides, so setup details are not centralized in one place.
- The pricing page shows usage-based billing, so costs depend on output length and plan tier rather than a flat rate.
FAQ
How can I use Sync-3?
Sync-3 is available through Sync’s web studio and API, and the pricing page also includes SDK access on paid plans. The Premiere plugin and ComfyUI node are documented separately as integrations.
What kinds of video does it support?
The homepage says Sync-3 is intended for any video content in the wild, including movies, podcasts, games, and animations.
What is Sync-3 designed to handle well?
The homepage describes Sync-3 as preserving acting performance across languages and handling difficult visual conditions such as sharp angles, side faces, close-ups, multiple speakers, low lighting, and shaky camera footage.
Is there a free plan or paid pricing?
The pricing page shows a free Hobbyist plan, paid subscription tiers, and usage-based billing per second of generated video. Higher tiers add longer video limits, more concurrency, and batch API access.
What do I need to install the Premiere plugin?
The Adobe Premiere guide lists Adobe Creative Cloud, Adobe Premiere 2025 v25.6 or later, and a Sync Labs account as prerequisites for the plugin.
Quick Facts
- Category
- AI lipsync
- Primary product
- sync-3
- Website
- sync.so
- Access
- Web studio, API, SDKs, Adobe Premiere plugin, ComfyUI node
- Pricing model
- Usage-based with subscription tiers
- Primary use
- Lip-syncing video to audio
sync-3 대안
Caplo
Caplo is an iPhone app companion that turns audio from other apps into real-time translated captions in a floating Picture-in-Picture window. It helps users follow live streams, anime, sports, podcasts, courses, news, and other live audio when subtitles are missing or not usable.
CAMB.AI Streams
CAMB.AI Streams dubs live audio in multiple languages in real time for broadcasts on platforms like YouTube, Twitch, and X. It plugs into existing live workflows using common streaming protocols and avoids a post-production step.
Wallie
Wallie is an open-source AI streamer that watches your screen, hears chat, and generates live commentary in a configurable persona. It runs locally on your machine with your own keys and is aimed at faceless content, autonomous streams, and real-time reactions.
HeyGen Developers
Official HeyGen API documentation for building AI avatar videos, translations, lipsync, and interactive video-agent sessions. It supports direct API use plus MCP and CLI-style workflows for developers and AI agents.
MagicSlides
MagicSlides is an AI presentation generator that turns text, topics, documents, URLs, and videos into slide decks. It creates presentations in Google Slides by default and supports PowerPoint export, with multilingual output and AI-assisted editing.
Microsoft Translator
Microsoft Translator is a Bing translation web app for translating short text between English and more than 100 languages. It also supports image capture translation and basic output actions like listen and copy.