LatentSync Video to Video
Input
Hint: you can drag and drop file(s) here, or provide a base64 encoded data URL Accepted file types: mp4, mov, webm, m4v, gif
Hint: you can drag and drop file(s) here, or provide a base64 encoded data URL Accepted file types: mp3, ogg, wav, m4a, aac
Customize your input with more control.
Result
Waiting for your input...
Your request will cost $0.2 for videos up to 40 seconds. For longer videos, you will be charged $0.005 per second of output video.
Logs
Readme
LatentSync - Advanced AI Lip Sync Animation
LatentSync is a state-of-the-art video-to-video model that generates high-quality lip sync animations from audio using advanced algorithms. Perfect for applications requiring realistic synchronization between video and audio content.
Overview
LatentSync delivers professional-grade lip synchronization through an end-to-end framework based on audio-conditioned latent diffusion models. Created by ByteDance, this model excels at creating natural, smooth lip-sync effects without intermediate representations, supporting both real-life and anime character video processing.
Key Benefits
Transform your videos with LatentSync's powerful capabilities:
Realistic Synchronization
- High-quality lip sync animations with natural mouth movements
- Temporal consistency through TREPA (Temporal REPresentation Alignment)
- Support for both real-life and animated characters
Developer Experience
- Simple REST API with comprehensive SDKs
- Straightforward video + audio input workflow
- Detailed documentation and examples
Enterprise Ready
- Production-grade reliability
- Flexible pricing for videos of different lengths
- Professional support available
Getting Started
Getting up and running with LatentSync takes just a few minutes. Here's how:
- Install the SDK for your platform:
JavaScript/TypeScript:
bash
npm install --save @fal-ai/client
Python:
bash
pip install fal-client
- Configure your credentials:
javascript
import { fal } from "@fal-ai/client"; fal.config({ credentials: "YOUR_FAL_KEY_HERE" });
- Make your first API call:
javascript
const result = await fal.subscribe("fal-ai/latentsync", { input: { video_url: "https://example.com/your-video.mp4", audio_url: "https://example.com/your-audio.mp3" } }); console.log(result.video.url);
Implementation Guide
LatentSync works with two primary inputs:
Video Input
- Supported formats: MP4, MOV, WebM, M4V, GIF
- Upload your source video containing the face/character to be synchronized
Audio Input
- Supported formats: MP3, OGG, WAV, M4A, AAC
- The audio file that will drive the lip synchronization
Error Handling
Always implement proper error handling:
javascript
try { const result = await fal.subscribe("fal-ai/latentsync", { input: { video_url: "your-video-url", audio_url: "your-audio-url" } }); } catch (error) { console.error("Lip sync generation failed:", error.message); // Implement appropriate fallback behavior }
API Parameters
`video_url`
(required): URL of the input video`audio_url`
(required): URL of the audio file for lip synchronization
Additional settings can be customized through the control panel when available.
Technical Specifications
Architecture
- End-to-end lip sync framework based on audio-conditioned latent diffusion models
- Uses Whisper model to convert speech into audio embeddings
- Integrates embeddings into U-Net through cross-attention layers
- TREPA technology for enhanced temporal consistency
Performance
- Processing time varies based on video length
- Maintains high-resolution video quality
- Smooth temporal consistency without frame discrepancies
Use Cases
LatentSync excels in various applications:
- Film & Video Dubbing: Create perfect lip sync for dubbed content
- Virtual Avatars: Animate digital characters with realistic speech
- Gaming: Sync NPC dialogue for immersive experiences
- Education: Create language learning content with accurate pronunciation visuals
- Advertising: Generate lip-synced content for virtual spokespersons
Pricing and Usage
Transparent, duration-based pricing:
- Up to 40 seconds: $0.20 per video
- Longer videos: $0.005 per second of output video
View detailed pricing or contact sales for enterprise solutions.
Queue Management
For asynchronous processing:
javascript
// Submit request const { request_id } = await fal.queue.submit("fal-ai/latentsync", { input: { video_url: "your-video-url", audio_url: "your-audio-url" } }); // Check status const status = await fal.queue.status("fal-ai/latentsync", { requestId: request_id }); // Get result const result = await fal.queue.result("fal-ai/latentsync", { requestId: request_id });
Support and Resources
We're here to help you succeed with LatentSync:
- Documentation: Comprehensive guides at docs.fal.ai
- Support: Technical support via support@fal.ai
- Community: Join our Discord for discussion and tips
- GitHub: ByteDance/LatentSync for technical details
About LatentSync
LatentSync represents a breakthrough in lip synchronization technology, diverging from previous diffusion-based methods by directly leveraging the capabilities of Stable Diffusion to model complex audio-visual correlations. The model is fully open source, providing researchers and developers the ability to reproduce and improve this technology.
Ready to Create Perfect Lip Sync?
Get started at fal.ai/login and start creating realistic lip sync animations today with LatentSync.