AI video transformation

AI Lip Sync: Replace the Audio, Keep the Lips in Sync

Keep the footage you shot. Add a new recording, voice-over or AI voice, and the person on screen speaks it.

How it works

One video, lips matched to whatever audio you bring

1
Upload the video
A clip with one person facing the camera, up to 30 seconds. Framing, motion and camera moves stay as shot; only the mouth is redone.
2
Upload the new audio
Your own recording, a voice actor's track or speech from the AI voice generator all work. A clear voice with little background noise gives the best result.
3
Generate and schedule
The finished video is saved to your asset library with the new soundtrack in place, ready for a caption and a slot in each platform's publishing queue.

Synced versions go straight into the publishing queue. One original take can carry several different audio tracks, each with its own caption and account.

Where it is used

Same footage, new audio, a new post.

Short drama & commentary

A voice actor re-records a line and the actor on screen now mouths the new dialogue, with no return to set.

Script fixes without a reshoot.

Online courses

An instructor slips up or the syllabus changes; re-record only that passage and the on-screen instructor delivers it.

Course updates cost only recording time.

Ads & spokesperson videos

One spokesperson take re-issued with a new price, selling point or promo date, lips matching in every version.

One shoot, several scripts to test.

Local business

An owner films one talking clip, then swaps in a new recording for each holiday offer or menu change.

Fresh posts without getting back on camera.

What it can and cannot do

Try one short clip before you generate a batch.

Works best with one person facing the camera or close to it. This is the range we show on this page.
Each video can be up to 30 seconds. Results look most natural when the new audio is close to the video's length; trim it first if the gap is large.
Side profiles, looking down, or a hand or microphone covering the mouth reduce lip accuracy.
The audio should be a clear voice. Loud background music, overlapping speakers or heavy noise make alignment worse.
Only the mouth and the area around it are regenerated. Expressions, gestures and camera motion stay as shot.
Use it only for yourself or people who have given permission. Do not use it to put words in someone's mouth.

More than a lip sync tool

Built for teams that keep producing and publishing.

Voice and lip sync in one place

No audio yet? Generate speech with the AI voice generator and use it for lip sync right away, without moving files between tools.

One take, many audio tracks

Pair the same footage with different scripts. Each version is its own asset, so you can rotate and test which one works.

Publish when it finishes

Results land in the asset library and open in the publishing editor for scheduling across platforms and accounts.

Pricing

Billed by the length of the generated video. Talking-head clips are short, so trying a few scripts costs little.

See plans

Questions about lip sync

What creators ask before swapping the audio

How is lip sync different from video translation?

Video translation turns the original speech into another language and creates the voice-over. Lip sync uses audio you provide, with no translation: it replaces the soundtrack and matches the lips to it. Use lip sync when you already have the recording.

What audio can I use?

Common recording and voice-over files can be uploaded, or you can use speech from the AI voice generator. A single, clear voice with little background sound works best.

How long can the video be?

Up to 30 seconds per video. Split longer content into passages, lip sync each one, then join them.

Does it work with more than one person on screen?

One person facing the camera is the most reliable case today. With several people in frame or frequent head turns, test a short section first.

Is the original sound kept?

The original soundtrack is replaced entirely by the new audio. To keep background music, mix it into the new audio before uploading.

What if the lips do not line up?

Check that the audio is clear and the mouth is not covered. Regenerating with cleaner audio or a clip with more of the face toward the camera usually helps a lot.

Can I use the result commercially, and what rights do I need?

Yes, as long as the person on screen is you or has given permission, and you own or have licensed the audio. Do not use it to make anyone appear to say something they did not say.