What is AI Lip Sync?
AI lip sync technology automatically synchronizes facial and lip movements with dubbed audio across 34+ languages. Perso AI achieves 98.5% accuracy — including faces partially covered by hands or microphones — by processing video at the frame level using ESTsoft's in-house pipeline engine. Lip sync is one step in the broader AI dubbing workflow — see our complete guide if you're new to how AI dubbing works.
Traditional lip sync requires manual animation taking 7~14 days per minute. Perso AI completes the same workflow in under 3 minutes, with no voice actors, reshoots, or editing skills required. For a deeper look at the technology behind natural-looking lip sync, see the science behind how AI lip sync makes dubbed videos feel natural.
How to Use Perso AI Lip Sync
Developed by ESTsoft,
an Advanced AI Research
Trained on diverse multilingual datasets to ensure realistic phoneme-to-mouth matching
Optimized with deep neural rendering models for highly natural visual transitions
Designed to handle real-world variability—lighting, occlusions, facial types—without breakin sync
Continuously improved by in-house researchers, engineers, and production experts
Built in-house with enterprise-grade encryption, our pipeline processes your video and voice data securely.
> For details on how we handle your content — and how to evaluate any AI dubbing platform's safety standards — see our guide on whether AI dubbing is safe to use.
Built for Global Storytelling
- In Any Content Style
Creators
Marketers & Brands
Training & Education
Podcast & Narration
Scale Your Voice
AI Lip sync FAQ
What is AI lip sync?
AI lip sync automatically adjusts a speaker's mouth movements to match dubbed audio in a different language, making dubbed videos look naturally spoken rather than translated. ✨ ✅ Voice Cloning: AI analyzes and replicates the original voice from the video, maintaining the same voice and tone even when translating into another language. ✅ Separation & Translation: A audio is separated and automatically translated into 32+ different languages, including English, Spanish, Chinese, French, and more. ✅ Dubbing & Lip Sync: Translated audio is automatically dubbed, and lip movements are synced to provide a natural viewing experience.
