AI Lip Sync
Sync the lip movement of a character to any audio input. Give a face new speech, a translated voice or a recorded script without filming it again.
- Any audio track as the driver
- Works on video and generated characters
- Keep the picture, change the speech
- Results saved to your library
How to lip sync a video
You provide two things, a face on screen and the audio it should speak, and the tool reconciles the two.
- 01
Upload the video or image with the face
Choose a clip where the face is clearly visible and reasonably large in frame. The tool follows the mouth, so a clear, well-lit face gives the cleanest result.
- 02
Add the audio that should be spoken
Upload a recording, a voice-over you generated, or a translated track. The mouth movement is matched to whatever this audio says.
- 03
Run it and check the result
Play the result with sound on. Watch the mouth against hard consonants and pauses, and rerun with a cleaner audio file if the match drifts.
What lip sync is useful for
New speech on existing footage
Change what a person says without refilming. The picture stays, and the mouth follows the new audio.
Pairs with a translated voice
Combine a translated or generated voice track with the original footage so the dub does not look out of sync.
Brings generated characters to life
A character from an image or a generated clip can be made to speak a script, which turns a still concept into a presenter.
Audio-driven, so you control the script
Because the audio drives the mouth, you decide the words, the language and the timing, and can swap the track and run again.
Where lip sync fits into a workflow
Localised videos
Match the mouth to a translated voice so a viewer in another country is not watching a mismatch.
Corrections and re-takes
Fix a line that was misspoken or needs to change, without calling everyone back for another take.
Presenter and explainer videos
Give a generated or illustrated character a voice and a script for a repeatable series.
Product and ad creatives
Test several scripts on the same footage and compare which one performs.
Training and course content
Update a spoken instruction in a recorded lesson without re-recording the whole session.
What decides whether a lip sync looks right
In VerseIn lip sync takes two inputs: a video or image with a clearly visible face, and the audio it should speak. That audio can be a recording, a voice-over you generated or a translated track, and the mouth movement is matched to it. The result is saved to your library, so you can swap the audio, run it again and compare the versions side by side.
People are extremely sensitive to mouths that do not match speech. A delay of a fraction of a second, or a mouth that stays still on a hard consonant, registers as wrong before the viewer can say why. That is the standard a lip sync tool is held to, and it is why the result needs to be watched with sound on rather than judged from a still frame.
The video you start from matters. A face that is large in the frame, evenly lit and mostly facing the camera gives the tool a clear mouth to work with. Profile views, strong shadows over the mouth, hands in front of the face or a very small face in a wide shot all make the match harder, and the result will lean on more guesswork.
The audio matters just as much. Clean speech with little background noise gives a clear signal for each sound. Music mixed under the voice, several people talking at once or heavy echo blur the signal, and the mouth movement follows that blur. If the match looks loose, the first thing to try is a cleaner recording of the same line.
Think about the length of the line too. A short, well-paced sentence is easier to match than a long unbroken paragraph, and a clip that is split at natural pauses is easier to review than one that runs for a minute. Working a line at a time also makes it cheap to redo just the part that needs it.
Finally, use the tool honestly. Sync speech to footage of yourself, people who have agreed to it or characters you created. Do not use it to put words in the mouth of a real person who has not consented, and label synthetic speech where the platform you publish on requires it.
AI lip sync FAQ
What do I need to lip sync a video?
A video or an image with a clearly visible face and an audio track containing the speech you want. The accepted formats and limits are shown on the upload step.
Does it work on characters I generated?
Yes. A generated or illustrated character with a visible face can be driven by an audio track, which is a quick way to turn a concept into a speaking presenter.
What makes the match better?
A large, well-lit, front-facing face and clean speech with little background noise. If a result looks loose, try a cleaner recording of the same line first.
Can I use it with a translated voice?
Yes. Pair a translated or generated voice with the original footage. If you want translation and lip sync together in one step, the video dubbing tool does both.
Is there anything I should not use it for?
Do not make a real person appear to say something they have not agreed to. Use your own footage, footage of people who consented, or characters you created.
Where to go next
Give a face new words
Any audio track as the driver, and every result saved to your library.