Lip Sync AI for Video Dubbing and Talking Avatars

Turn written dialogue or a WAV recording into synchronized mouth movement on an existing face video. Upload a 2–10 second MP4 or MOV, choose text-to-speech or local audio, and create a downloadable lip-synced video with Sync Lipsync 2.

Create a Lip Sync Video in One Focused Workflow

The generator keeps video upload, speech creation, synchronization, status tracking, and download in one job. Text mode first creates a WAV speech track, then automatically passes that track and the source video into the lip-sync model.

1. Upload a clear face video

Use a 2–10 second MP4 or MOV with a visible mouth and stable facial detail. A front-facing or three-quarter view with limited obstruction gives the model a clearer target.

2. Add generated or recorded speech

Write dialogue and choose a voice and speaking speed, or upload a WAV file up to 30 seconds. Both paths use the same synchronization stage after the audio is ready.

3. Review and download

Styvid tracks both stages under one job, migrates the completed video to persistent storage, and returns a browser preview with a download link.

Source Footage That Produces Cleaner Lip Sync

Lip synchronization changes mouth motion; it does not reconstruct an unreadable face. Source quality and shot selection remain important.

Keep the mouth visible

Avoid hands, microphones, extreme shadows, masks, and frequent profile turns that cover the lips. Moderate natural head movement is easier to preserve than rapid motion.

Use a continuous short shot

Choose one person and one readable shot rather than a clip with cuts, several speakers, or dramatic changes in scale. Active-speaker mode can help when more than one face is present.

Match dialogue length to the shot

Short, naturally paced dialogue is easier to fit into a 2–10 second source. The current workflow uses cut-off synchronization so audio that exceeds the available shot does not create an endless loop.

Useful for Dubbing, Avatars, and Dialogue Revisions

Start from footage whose performance and framing already work, then change the spoken content without filming the shot again.

Localized social clips

Create alternate spoken versions of a short presenter, creator, or campaign clip while keeping the original visual performance.

Talking characters and avatars

Add dialogue to live-action faces, animated characters, and AI-generated presenters for short explanations, reactions, and story moments.

Post-production dialogue changes

Revise a line after recording when the shot is worth keeping but the spoken wording, timing, or voice direction needs another version.

FAQs

Lip Sync AI FAQ

Practical details about inputs, speech generation, and output.

The current Styvid workflow accepts MP4 and MOV source videos from 2 to 10 seconds, with a maximum upload size of 100 MB.

Yes. Text mode creates a WAV speech track with MiniMax Speech 2.8 Turbo, then automatically uses that audio with Sync Lipsync 2. Audio mode skips TTS and accepts an uploaded WAV file.

The model exposes active-speaker detection, which can prioritize the person who is speaking. A clean single-speaker shot remains the most predictable input.

The generated speech or uploaded WAV is the synchronization track for the result. Use a clean dialogue track and perform any broader music mix in a later editing step.

Video synchronization uses sync/lipsync-2 on Replicate. Text-to-speech uses minimax/speech-2.8-turbo before the lip-sync stage.

Give an Existing Face Video New Dialogue

Upload a short, clear shot and create synchronized speech from text or WAV audio.

Start Lip Sync