AI Video Lip Sync Tool
Perfectly sync lip movements with new voiceovers in one click — multi-language dubbing, audio replacement and expression fine-tuning for translated shows, explainers and VTubers
Tool Interface
Interactive tool will be available soon
Features
- ✓ Auto lip sync for voiceovers in 30+ languages
- ✓ Preserves original expressions and emotions, natural and fluid
- ✓ Supports audio track replacement, speed and voice tone adjustment
- ✓ Precise mouth tracking for front faces, side faces and multi-person scenes
- ✓ Exports 1080P/4K HD video in multiple formats
How to Use
- Upload a video or paste a video link
- Choose/upload a voiceover track, or type text to generate dubbing
- AI analyzes the mouth movements and generates lip sync
- Preview the result and export the video
FAQ
What is AI Video Lip Sync Tool?
An online AI lip sync tool. It makes a speaker's lip movements match a new voiceover or translated audio track perfectly, with multi-language dubbing, audio replacement and expression fine-tuning. Input: a video file or link plus a voiceover track or text. Output: a lip-synced HD video with 1080P/4K export.
Which video formats are supported?
MP4, MOV, MKV, WebM and other mainstream formats, plus links from YouTube, Bilibili and more. Output supports MP4, MOV and others.
How natural does the lip sync look?
Powered by advanced mouth-generation models that sync precisely to facial structure, speech rhythm and emotional tone. Results are fluid and natural for front faces, side faces and multi-person scenes.
Can I customize the voiceover?
Yes. Upload your own voiceover track or type text for AI-generated multi-language dubbing. You can also adjust speed, voice tone and emotion for full control.
How long does processing take?
It depends on duration and resolution. A 1-minute video typically finishes in 1-3 minutes. Long videos run in a background queue with download notification on completion.
Is there a resolution limit?
Up to 4K input and output is supported. The free plan exports 720P; paid plans unlock 1080P and 4K HD export for professional production.