sync/sync/lipsync/v2/pro
Produce lifelike lip-synced videos, preserving identity and style, with flexible sync modes, multilingual support, and 4K-ready super-resolution.
Introduction to Sync Lipsync
Launched by Sync Labs in 2025, Sync Lipsync is an advanced AI generation tool that redefines lip synchronization for creators worldwide. Built on research from the team behind Wav2Lip, Sync Lipsync offers zero-shot performance for both video-to-video and audio-to-video generation, syncing lip movements naturally without prior speaker training. The Pro version, Lipsync-2-Pro, enhances fidelity with 4K super-resolution, realistic facial detail preservation, and robust multilingual dubbing. It is crafted for creators seeking seamless integration of dialogue replacement, translation, and animation re-speech at studio level quality. Sync lipsync video-to-video, audio-to-video lets you transform any static character or existing footage into lifelike, speech-synced visuals. You can easily align dialogue, animate portraits, or localize content with authentic mouth movements, all while keeping the speaker’s original style. Perfect for filmmakers, animators, and developers, it delivers expressive, high-resolution lip-sync results in seconds.
What makes Sync Lipsync stand out
Sync Lipsync v2 Pro delivers studio-grade lip synchronization for live-action, animation, and AI-generated footage, scaling up to 4K. With Sync Lipsync, mouth movements align to the target audio while preserving identity, speaking style, and fine facial details (teeth, moustache, beard). A diffusion-based super-resolution stage in Sync Lipsync improves clarity around the mouth and cheeks for crisp, production-ready results. Key capabilities with Sync Lipsync:
- Zero-shot identity/style preservation: Sync Lipsync requires no speaker-specific training and maintains articulation idiosyncrasies.
- Strong viseme accuracy: Sync Lipsync reliably renders closures, bilabials, and natural coarticulation.
- Temporal stability: Sync Lipsync uses active speaker cues and is robust to brief occlusions.
- Broad modality support: Sync Lipsync works with cinematic footage, webcam clips, stylized characters, and AI portraits.
- High-resolution delivery: Sync Lipsync scales cleanly to 4K for editorial, ads, and localization.
Usage and prompting guide for Sync Lipsync
Provide a base video (the face to be synced) and the target audio (the speech). Sync lipsync adapts lip motion to the audio while keeping identity and framing intact.
Input preparation for Sync Lipsync
- Video: choose stable shots with a clear view of the mouth; minimize motion blur and heavy compression.
- Audio: use clear, noise-reduced tracks with consistent loudness; trim long leading/trailing silence.
- Framing: frontal or 3/4 views work best; avoid persistent occlusions (hands, props) covering the lips.
- Lighting: keep illumination consistent to reduce flicker around the mouth in Sync Lipsync outputs.
Practical tips for better results with Sync Lipsync
- Keep the mouth visible; brief occlusions are fine, continuous coverage degrades alignment.
- Prefer higher-bitrate source video; avoid aggressive sharpening/denoise pre-sync.
- If the audio has fast plosives or sibilants, ensure the base clip is sharp (no motion blur).
- Split long takes at natural pauses, then batch with Sync Lipsync for consistent results. With the right inputs and mode choices, Sync Lipsync produces natural, temporally consistent lip motion that holds up for 1080p–4K deliveries, making Sync Lipsync a dependable choice for creators, studios, and brands.
Examples of Sync Lipsync in Action
Sync Lipsync on X: Updates and Community Content
Frequently Asked Questions
What is Sync Lipsync and how does it relate to image-to-video generation?
Sync Lipsync is an AI-driven model that performs precise lip synchronization, aligning mouth movements in any given video or image-to-video sequence with new audio. It enables creators to produce realistic talking avatars and natural video dubbing without manual animation work.
How does Sync Lipsync handle audio-to-video dubbing for multilingual content?
Sync Lipsync can take any input speech track and sync it to an existing speaker’s video (audio-to-video), preserving their unique lip movement style. This helps localization teams create polished multilingual or dubbed content with accurate mouth motions.
What are the main features that set Sync Lipsync apart from other image-to-video tools?
Unlike simpler image-to-video generators, Sync Lipsync uses a zero-shot style-preserving model to reproduce natural lip motion and facial detail. It supports multiple formats, high-resolution output, and automatic detection of active speakers in complex scenes.
Is Sync Lipsync free to use, or does it require credits for image-to-video projects?
While Sync Lipsync offers free trial credits for new users, full access to its image-to-video and audio-to-video capabilities requires spending platform credits on Runcomfy’s AI playground, depending on the chosen plan and video resolution.
What kind of users benefit most from Sync Lipsync’s audio-to-video and image-to-video functions?
Sync Lipsync is designed for content creators, filmmakers, animators, and localization professionals who want high-fidelity lip synchronization in their image-to-video and audio-to-video workflows, from dubbing to character re-animation.
What output quality can be expected from Sync Lipsync and its Pro version?
The base Sync Lipsync model delivers realistic results for most cases, but the Lipsync-2-Pro version enhances image-to-video fidelity through diffusion-based super resolution, producing sharper teeth, beards, and fine face details.
On what platforms can I access Sync Lipsync for image-to-video or audio-to-video generation?
Sync Lipsync is available on the Runcomfy website’s AI playground, accessible through desktop or mobile browsers. Users must log in to access image-to-video tools, and can manage projects through web-based interfaces.
Does Sync Lipsync support both static images and full video clips for audio-to-video syncing?
Yes. Sync Lipsync can operate on either still portraits (for image-to-video applications) or pre-recorded video clips (for audio-to-video dubbing), making it versatile for both animated avatars and dialogue replacement.
What are the known limitations or caveats when using Sync Lipsync for image-to-video animation?
Although Sync Lipsync provides highly realistic lip synchronization, image-to-video outputs may vary depending on lighting, occlusion, or head pose angles. Extremely obstructed faces or low-resolution source media may reduce fidelity.