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AI Lip Sync Avatar | Audio-Driven Talking Head Generator
Generate realistic talking avatar videos by uploading a portrait image and an audio file. Trellis 3D's AI lip sync tool uses three specialized models — Kling Avatar Standard (720p), Kling Avatar Pro (1080p), and Latiai Lip Sync (480p/720p with seed control) — to synchronize mouth movements, facial expressions, and head motion to your audio. Supports JPG/PNG/WebP portraits up to 10MB and MP3/WAV/AAC/M4A/OGG audio up to 10MB and 15 seconds. Ideal for marketing videos, e-learning narration, social media content, and multilingual dubbing.
What is AI Lip Sync Avatar?
AI Lip Sync Avatar is an audio-driven video generation tool that creates realistic talking head videos from a single portrait image and an audio file. The AI analyzes the audio waveform to extract phoneme timing, pitch contour, and speech rhythm, then generates frame-by-frame mouth movements, jaw motion, and subtle facial expressions that stay synchronized with the audio track.
Trellis 3D offers three AI Avatar models optimized for different lip sync video quality tiers. Kling Avatar Standard delivers 720p lip sync output using Kuaishou's AI avatar pipeline. Kling Avatar Pro produces 1080p results with higher fidelity for professional lip sync video production. Latiai Lip Sync supports both 480p and 720p resolution with seed reproducibility, allowing you to reproduce consistent lip sync AI results across multiple generations.
AI Lip Sync Key Features
Professional lip sync capabilities powered by multiple AI models.
Three Lip Sync Models
Choose from Kling Avatar Standard (720p), Kling Avatar Pro (1080p), or Latiai Lip Sync (480p/720p). Each AI Avatar model is optimized for different lip sync video quality and resolution needs.
Audio-Driven Animation
Upload any audio file and the lip sync AI extracts speech patterns to drive lip movements, jaw motion, and facial expressions. Create AI avatar videos without manual keyframing or rigging.
480p to 1080p Output
Scale from 480p draft quality to full 1080p production output. Kling Avatar Pro delivers the highest resolution, while Latiai Lip Sync offers flexible 480p/720p options.
Seed Reproducibility
Latiai Lip Sync model supports seed values (10000-1000000) for deterministic output. Lock a seed to reproduce consistent results across multiple generations with the same inputs.
Full-Body Lip Sync
The lip sync AI generates natural head movements, shoulder sway, and body gestures alongside mouth animation. AI Avatar results look more natural than head-only talking avatar solutions.
Flexible Audio Formats
Accepts MP3, WAV, AAC, M4A, and OGG audio files up to 10MB and 15 seconds. Upload your audio and the lip sync AI handles the rest — no format conversion needed.
How to Create a Lip Sync Avatar
Generate talking avatar videos in three simple steps.
Upload Portrait Image
Upload a clear portrait photo in JPG, PNG, or WebP format (max 10MB). Front-facing photos with visible face and shoulders produce the best lip sync results.
Upload Audio File
Upload your audio in MP3, WAV, AAC, M4A, or OGG format (max 10MB, max 15 seconds). Clear speech recordings with minimal background noise work best.
Generate & Download
Select an AI Avatar model and resolution, optionally set a seed (Latiai Lip Sync only), then generate your lip sync video. Download the finished lip sync avatar when processing completes.
Lip Sync Avatar Use Cases
Discover creative and business applications for AI lip sync avatars.
Marketing Videos
Create spokesperson content at scale
Generate talking head videos for product launches, testimonials, and ad campaigns. Use AI lip sync avatars to create personalized marketing content without scheduling live talent.
E-Learning & Training
Build engaging course narration
Create instructor AI avatars that narrate educational content with lip sync AI. Upload lesson audio and a presenter image to generate lip sync video for online courses and training modules.
Social Media Content
Produce viral short-form videos
Generate lip sync video clips for TikTok, Reels, and YouTube Shorts. Turn voiceovers into engaging AI avatar content without recording on camera.
Customer Support
Humanize automated responses
Create lip sync avatar videos for FAQ responses, onboarding guides, and help center content. Provide a human face to automated customer interactions with AI avatar technology.
Multilingual Dubbing
Localize content across languages
Record audio in different languages and generate lip sync avatars for each. Create multilingual lip sync video versions with consistent AI avatar visual presentation.
Podcast Visualization
Turn audio into video content
Convert podcast clips and audio interviews into lip sync video content. Repurpose audio for video platforms with AI avatar lip sync technology.
Best Practices for AI Lip Sync
Portrait Image Tips
- Use front-facing portraits with visible mouth and jaw area
- Ensure even lighting without harsh shadows on the face
- Avoid accessories that cover the mouth (masks, scarves)
- Higher resolution source images produce sharper lip sync output
Audio Recording Tips
- Record in a quiet environment to minimize background noise
- Maintain consistent volume and distance from the microphone
- Keep audio under 15 seconds for optimal processing
- Clear speech with natural pacing produces the most realistic sync
Technical Specifications
Available Models
- Kling Avatar Standard: 720p, Kuaishou AI avatar pipeline
- Kling Avatar Pro: 1080p, higher fidelity lip sync
- Latiai Lip Sync: 480p or 720p, seed reproducibility
Input Requirements
- Portrait image: JPG/PNG/WebP, max 10MB
- Audio file: MP3/WAV/AAC/M4A/OGG, max 10MB, max 15s
- Optional: text prompt for style guidance
- Optional: seed value 10000-1000000 (Latiai Lip Sync only)
Output Specifications
- Resolution: 480p / 720p / 1080p (model dependent)
- Duration: matches audio length (up to 15s)
- Format: MP4 video output
- Processing: typically 1-5 minutes
More AI Video Tools
AI Lip Sync Avatar FAQ
Common questions about AI lip sync and talking avatar generation.
Create Your AI Lip Sync Avatar Now
Upload a portrait and audio to generate realistic lip sync video. Choose from three AI Avatar models, adjust resolution from 480p to 1080p, and download your lip sync avatar in minutes.