What is AI lip sync software?
AI lip sync software generates mouth movement that matches a dialogue track, so a character on screen appears to speak the line. It works with recorded or synthetic voices and with live-action or animated faces. Ciaro Pro builds lip sync into the film timeline: you design or import the voice, place the take frame-accurately, and generate the speaking shot in context.
Definition
AI lip sync software, defined
Definition
AI lip sync software is a tool that drives a character’s visible mouth movement from speech audio so dialogue shots match the words being spoken.
How it works
How a line reaches the character’s mouth
Create or import the voice
Design a character voice, record on the timeline, or bring in your own take.
Place the take
Line up the audio against the shot with frame accuracy.
Generate the speaking shot
Mouth movement follows the performance for that character.
Benefits
Why lip sync belongs on the timeline
Lines stay with their character
Each performance belongs to the character who speaks it in the script.
Judged in context
You review the synced shot against the board and the surrounding edit.
Fewer round trips
No exporting clips to a separate app and re-importing the result.
FAQ
Frequently asked questions
How does AI lip sync work?
A lip sync model analyzes the speech audio, identifies the sounds being made, and generates matching mouth shapes and facial motion on the target face. Some tools re-render only the mouth region of existing footage; others generate the whole talking shot from an image. Results depend on clean audio, a clearly visible face, and a shot framed so the performance can read.
What kinds of AI lip sync tools are there?
There are standalone lip sync services such as sync., avatar and talking-head platforms such as HeyGen and Hedra, and lip sync built into production software. Standalone tools are quick for a single clip. Ciaro Pro is in the last group: voice design, recorded or imported takes, and lip-synced generation happen on the same timeline as the rest of the film.
When in production should you lip sync?
After the dialogue is final and the shot is framed. Syncing earlier means redoing the work every time a line changes or a shot is reframed. In practice, lock the script line, choose the take, board the dialogue shot so the face is visible, and then generate the synced version and review it in the cut.
Explore next
Related answers and features
Sync dialogue inside the film, not beside it
Ciaro Pro keeps characters, voices, takes, and lip sync on the same timeline as your edit.