LongCat Video Avatar: Lip-Sync Presenter Videos
The LongCat engine is now live on ArtAny AI. Upload a portrait and audio track to generate lip-synced presenter videos for explainers, training, and social content. You must have rights to all uploaded materials and may not impersonate real persons without consent.
See our Content Policy and Terms of Service.
How to Use Our LongCat-Video-Avatar Generator
On the ArtAny AI platform, creating a lip-synced presenter video is straightforward. Upload a portrait and audio you have rights to use, and let the LongCat-Video-Avatar engine handle lip sync and motion.
Upload Your Source Portrait
Select a clear, front-facing photo of a character you have rights to use (yourself, licensed talent, or original artwork). No custom model training is required. Higher-resolution images typically yield clearer facial detail.
Upload Your Audio Track
Upload an audio file (MP3, WAV, or M4A) containing the speech or narration. Our generator uses advanced Audio-to-Motion technology to precisely synchronize lip movements with the sound. Beyond just lip-syncing, the engine also infers natural head tilts and blinking patterns based on the tone and rhythm of the audio.
Configure Generation Parameters
Fine-tune the settings to achieve the best results for your creation:
Resolution:
Choose between 480p and 720p. 480p is ideal for quick previews, while 720p provides standard HD quality suitable for social media and professional presentations.
Seed:
Used to control the randomness of the generation. Enter a specific number to try and replicate a certain style, or enter -1 to use a random seed for unique variations every time.
One-Click Synthesis & Review
Click "Generate" and let the ArtAny AI high-performance cluster handle the rendering. Within minutes, you can preview the generated long-sequence video. You can play and review the results online directly to ensure every micro-expression aligns with your creative vision.
Pro Tip: Capture the perfect look!
If a particular generation stands out, save its Seed. Using this seed with the original assets ensures you can recapture that unique vibe in future creations.
LongCat Avatar Key Capabilities
| Feature Module | Description | Technical Highlight |
|---|---|---|
| Stable Visual Continuity | Helps keep facial appearance consistent across longer clips for presenter-style videos. | Long-context temporal consistency |
| Quick Start | Generate from an uploaded portrait and audio without custom per-person model training. | Pre-trained avatar video pipeline |
| Refined Expressive Nuance | Precisely replicates eye contact, lip movements, and micro-expressions, avoiding a "robotic" feel. | High-fidelity Geometry-Aware Module |
| Native HD Output | Every frame delivers 720p-level clarity, meeting professional video production standards. | Multi-scale Super-resolution Generator |
Stable Visual Continuity
Helps keep facial appearance consistent across longer clips for presenter-style videos.
Long-context temporal consistency
Quick Start
Generate from an uploaded portrait and audio without custom per-person model training.
Pre-trained avatar video pipeline
Refined Expressive Nuance
Precisely replicates eye contact, lip movements, and micro-expressions, avoiding a "robotic" feel.
High-fidelity Geometry-Aware Module
Native HD Output
Every frame delivers 720p-level clarity, meeting professional video production standards.
Multi-scale Super-resolution Generator
Open Source & Resources
Open Source & Community Empowerment
The core technology of LongCat-Video-Avatar originates from the open-source contributions of the Meituan Tech Team. We invite developers to explore the endless possibilities of long-video avatars within the community.
Official Showcase & Community Voice
Official Showcases
Experience LongCat's superior performance in handling long-sequence motions, complex lighting adaptations, and precise audio synchronization.
Community Feedback
"This is the best open-source model I've seen for temporal consistencyâvisuals stay steady across longer clips."
â Senior VFX Artist
"The audio-driven movements in LongCat are incredibly natural, finally making lip-synced presenter videos feel less robotic."
â Independent Content Creator
Technical Comparison
| Metrics | LongCat-Video-Avatar | Standard Diffusion Models |
|---|---|---|
| Temporal Stability | Exceptional (Excellent) | "Lower, noticeable flickering" |
| Max Video Duration | Native support for minutes of video | Limited to 5-10 second clips |
| Visual Consistency | Strong across longer clips | More flicker on extended sequences |
| Training Requirement | No custom training required | Often requires person-specific fine-tuning |
Temporal Stability
Max Video Duration
Visual Consistency
Training Requirement
Call to Action
Create lip-synced presenter videos on ArtAny AI. Upload materials you have rights to use and follow our Content Policyâno impersonation of real persons without consent.