Introducing WaveSpeedAI InfiniteTalk Fast Video-to-Video on WaveSpeedAI

Introducing InfiniteTalk Fast Video-to-Video: Transform Any Video with Perfect Lip Sync

The ability to create realistic talking and singing videos has never been more accessible. WaveSpeedAI is thrilled to announce the availability of InfiniteTalk Fast Video-to-Video, a groundbreaking audio-driven model that transforms silent videos into perfectly lip-synced productions with unprecedented quality and speed.

Whether you’re dubbing content for global audiences, creating engaging marketing materials, or producing educational videos, InfiniteTalk Fast delivers professional-grade results through a simple REST API—no complex pipelines or manual editing required.

What is InfiniteTalk Fast Video-to-Video?

InfiniteTalk Fast Video-to-Video is an advanced AI model developed by MeiGen-AI that takes an existing video and an audio track as inputs, then generates a new video with precise lip synchronization. Unlike traditional dubbing tools that only modify the mouth region, InfiniteTalk goes further—it aligns head movements, facial expressions, and body posture with the audio to create natural, cohesive results.

Built on the robust Wan 2.1 video diffusion foundation, the model leverages a novel sparse-frame video dubbing paradigm. Instead of processing every frame independently, InfiniteTalk maintains a rolling context window of 81 frames (approximately 2.7 seconds at 30fps) while generating strategic “motion anchors.” This approach ensures seamless transitions and consistent identity preservation across extended sequences.

The result? Videos up to 10 minutes long—three times longer than most competing solutions—with no drift in visual identity or quality degradation.

Key Features

• Pixel-Perfect Lip Synchronization: Advanced audio encoding via Wav2Vec captures the nuances of speech including rhythm, tone, and pronunciation patterns, matching lip movements precisely to every syllable
• Full-Body Coherence: Goes beyond lips to synchronize head pose, facial micro-expressions, and upper body gestures with the audio, creating natural movement that matches how people actually speak
• Identity Preservation: Maintains consistent visual identity across all frames, eliminating the “identity drift” problem that plagues many video generation models
• Mask Control: Optional mask images let you define exactly which regions can move—perfect for preserving specific background elements or limiting animation to particular areas
• Prompt Guidance: Text instructions can guide style, pose, or behavioral elements while maintaining audio synchronization
• Extended Duration: Support for clips up to 10 minutes, far exceeding the 5-10 second limits of traditional lip-sync tools
• Multi-Resolution Output: Compatible with both 480p and 720p resolutions to match your quality and speed requirements

Real-World Use Cases

Content Localization and Dubbing

Transform videos into any language while maintaining the original speaker’s appearance. Marketing teams can create localized versions of product videos, testimonials, or training materials without reshooting. Educational content creators can reach global audiences by dubbing lectures and tutorials into multiple languages.

Social Media and Marketing

Create engaging talking-head content from existing video footage. Add new voiceovers to product demonstrations, generate personalized video messages at scale, or repurpose silent B-roll into narrated content.

Music and Entertainment

Produce lip-synced music videos from static or silent video inputs. Artists can create visual content that perfectly matches their audio tracks, while content creators can generate singing videos for viral social content.

Corporate Communications

Update training videos with new audio without reshooting. Localize executive communications for international offices. Create consistent video messaging across regions with different language requirements.

Accessibility

Add synchronized narration to silent video content, making it accessible to broader audiences. Generate videos with clear lip movements that support lip-reading.

Getting Started on WaveSpeedAI

WaveSpeedAI makes it simple to integrate InfiniteTalk Fast into your workflow:

1. Upload your audio file: Provide the speech, narration, or song you want synchronized
2. Upload your base video: Supply the silent video you want to animate
3. (Optional) Add a mask image: Define which regions should be animated if you need precise control
4. (Optional) Write a prompt: Guide the style, pose, or expressions for additional customization
5. Set your parameters: Choose your resolution and optionally set a seed for reproducibility
6. Submit and download: Receive your generated video in seconds to minutes depending on length

The API is fully documented and ready to integrate into your existing applications. With WaveSpeedAI’s infrastructure, you get:

• No cold starts: Instant availability without waiting for model loading
• Consistent performance: Processing approximately 10-30 seconds of wall time per 1 second of video
• Affordable pricing: Starting at just $0.15 per 5 seconds at 480p or $0.30 per 5 seconds at 720p
• Scalable throughput: Handle production workloads with reliable, consistent API performance

Why Choose WaveSpeedAI?

The landscape of AI lip-sync technology has grown increasingly competitive, with solutions ranging from open-source projects like Wav2Lip and MuseTalk to enterprise platforms like HeyGen and Synthesia. InfiniteTalk Fast stands out by combining the technical excellence of state-of-the-art research with the production-ready reliability of WaveSpeedAI’s infrastructure.

Comprehensive evaluations on industry-standard datasets including HDTF, CelebV-HQ, and EMTD demonstrate InfiniteTalk’s superior performance in visual realism, emotional coherence, and full-body motion synchronization. The model significantly reduces hand and body distortions compared to previous multi-character approaches while achieving exceptional lip-sync accuracy.

WaveSpeedAI’s platform eliminates the complexity of self-hosting and infrastructure management. Whether you’re processing a single video or thousands, you get consistent, predictable performance without managing GPU resources, model weights, or scaling concerns.

Start Creating Today

InfiniteTalk Fast Video-to-Video represents a significant step forward in audio-driven video generation. The combination of extended duration support, full-body synchronization, and identity preservation opens new possibilities for content creators, marketers, and developers alike.

Ready to transform your videos with professional-grade lip synchronization? Try InfiniteTalk Fast Video-to-Video on WaveSpeedAI and experience the future of audio-driven video generation.

For multi-character conversations or image-to-video generation, explore our single-character and multi-character versions as well.