AI Lip Sync - Natural Mouth Movement
AI lip-sync aligns the audio track you provide to the mouth movements in your video, frame by frame — so dubbed and localized videos no longer look off.
See the Difference
Experience the quality enhancement powered by AI
Who uses AI Lip Sync
Real workflows from teams creating for global audiences
Post-dub Lip Sync
When you dub a video into another language, mismatched lips break immersion. Lip sync makes characters' mouths follow the new audio naturally.
Cross-border Product Videos
Dub the same product walkthrough in multiple languages and sync lips for each. Overseas shoppers feel like it was filmed in their native language.
Film & Short Drama Localization
After translating short films or drama clips, keep the actors' lips in sync with the target language so the viewing experience stays seamless.
Digital Avatars & Virtual Hosts
Apply any voice-over to a digital avatar or virtual character with frame-level lip matching for more convincing broadcasts.
Core Features
Precision Sync
Frame-accurate lip matching
- ✓High-precision alignment
- ✓Language-agnostic — aligns to the audio
- ✓Natural expressions
Fast Processing
Quick generation times
- ✓Fast preview
- ✓Optimized pipeline
- ✓Batch processing
HD Quality
Maintains facial detail
- ✓No blurriness
- ✓High resolution support
- ✓Artifact-free
How it works under the hood
A look inside the pipeline — every step is driven by real engines
Upload Video & Audio
Provide the original video and the dubbed audio track to align
Face & Mouth Detection
Automatically locates each character's mouth area in every frame
Frame-level Lip Generation
Redraws mouth shapes frame by frame to match the dubbed audio's phonemes
Composite & Export
Seamlessly blends the new mouth region into the original footage and exports in HD
User Guide
Upload Video & Audio
Select your source files
Syncing
AI aligns lip movements to audio
Download
Get your lip-aligned video
Specs and limits
The hard facts you need before submitting, at a glance
vs. Traditional Lip Matching
Re-shoot or manually frame-correct: Mismatched lips, easy to spot
Oiiyao: Frame-level alignment follows every phoneme
Re-shoot or manually frame-correct: Actors re-record or frame-by-frame hand-editing
Oiiyao: Upload and auto-generate
Re-shoot or manually frame-correct: Re-record for every language
Oiiyao: Swap the audio track and re-sync
Frequently Asked Questions
Tools that work together
Chain the next step in your real workflow
Video Translation
First translate the video into the target language, then sync the lips.
Learn more →Text to Speech
Generate a voice-over with TTS, then pair it with lip sync to finish the video.
Learn more →Face Swap
Swap the on-screen face, then align the new face's lips to the audio.
Learn more →