It adjusts the mouth movement in existing video so it matches a different audio track. The face and performance stay; only the speech alignment changes, which is what makes dubbing look convincing rather than dubbed.

Can I use it to dub into another language?

Yes, and it is the main reason to use it. Translated audio with unchanged mouth movement reads as badly dubbed; re-syncing the mouth removes that.

Does it work on real footage or only generated video?

Both. Real footage is the more common input, since generated presenters are already synced when they are produced.

What audio can I feed it?

A recording or a generated voice track. Either way the mouth follows the audio.

Sync your first clip

Open Studio

Match any voice to any face

A lip sync generator matches mouth movement in video to an audio track, so a face can appear to speak words it was never filmed saying.

Sync a video

1pass to re-sync an entire clip

video · 16x9tools/lip-sync/hero-sync-16x9.mp4A face re-synced to a different audio track

Examples

Re-synced clips

video · 16x9tools/lip-sync/sample-dub-16x9.mp4Clip dubbed into another language

video · 9x16tools/lip-sync/sample-vertical-9x16.mp4Vertical clip with replaced narration

Process

How it works

Supply the video

Footage of a person speaking, real or generated.

Supply the audio

A recording, or a script that becomes speech.

Sync

Mouth movement is rebuilt to match the new track.

Capabilities

What it is for

Dubbing that does not look dubbed

Mouth movement follows the translated audio.

Replacing a line

Fix a word without reshooting the take.

Any audio source

Recorded or generated — both drive the sync.

Comparison

Compared with reshooting

	Traditional	With Votocon
A changed line	Refilm the take	Re-sync
Another language	Refilm or accept bad dubbing	Re-sync to translated audio
Turnaround	Days	Minutes

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FAQ

Frequently asked questions

What is an AI lip sync generator?