Upload the base media
Choose a video or a portrait image containing the face that should speak.
AI lip sync online
Audio-driven AI lip sync
Upload a base video or image and an audio clip. Medux generates a video where the face speaks your audio with matching lip movements.
Try it now
Open in Playground Choose your base media and audio
01
Base video or image
Pick the face that should speak.
No base media selected.
02
Audio
Upload the speech the face should say.
No audio selected.
The latest task appears below. Processing continues on the server if you leave this page.
Result preview
Your result will appear here
No lip sync video yet. Generate one to see it here.
One connected workflow
How AI lip sync works
Move from two source files to a reviewable video in three clear steps.
Add the audio
Upload the speech or voice-over that drives the lip movement.
Generate and review
Medux creates an asynchronous task. Preview the completed video before downloading it.
Creative control
What you can make with lip sync
Talking portraits
Turn a still photo and a voice recording into a speaking video for presentations, greetings, or social content.
Dubbing and voice-over
Replace the audio of an existing clip and let the mouth movements follow the new speech.
Avatar and character videos
Pair a character image with generated speech from Medux AI voices to create presenter-style videos.
Better source material
Get a more natural lip sync
Use a clear face
Choose a sharp, well-lit, front-facing face. Sunglasses, masks, and hands covering the mouth reduce quality.
Use clean audio
Speech with little background noise or music gives the model clearer timing to follow.
Test a short clip first
Try a short segment before a long video, then review mouth shapes and timing in the result.
Frequently asked questions
AI lip sync FAQ
What do I need to make a lip sync video?
Provide one base video or image containing the face that should speak, and one audio file with the speech. Medux generates a video where the face moves its lips to match the audio.
Can I use an image instead of a video?
Yes. Upload a clear portrait image to create a speaking video from a still photo, or upload a video to re-animate the mouth in an existing clip.
Which file formats are supported?
Video: MP4, MOV, WebM, AVI. Image: JPG, PNG, WebP. Audio: MP3, WAV, M4A, AAC, OGG, FLAC.
How can I get better lip sync results?
Use a sharp, front-facing face that stays visible and unobstructed, and clean speech audio with little background noise or music. Test a short clip before processing longer media.
How long does it take?
Processing time depends on the media length and current service load. The result panel shows the latest task status, and Account Results lets you follow every submitted task.
Can I keep working while it processes?
Yes. The task runs on the server after submission. Return to this page or open Account Results to see the status and the finished video.
Where can I find my finished video?
When processing succeeds you can preview and download the video on this page. The task is also saved in Account Results.
Can I use lip sync through an API?
Yes. This page uses the same audio-driven lip sync service as the Medux Playground, so you can try it there and integrate it into your own app or agent workflow.
Can I generate the audio first?
Yes. Create speech with the Medux AI voice tools, download the audio, and upload it here as the driving audio.
Example team feedback
Why teams use Medux for lip sync videos
Talking portraits, voice-over revisions, and presenter clips built from an image or video and a speech track.
Illustrative workflows, not verified customer reviews.