Workroom's AI lip sync tool syncs a voiceover to a face in an existing video or photo. You pick a source file, attach a voiceover, and Workroom generates a new video with audio-driven lip movements.

Before you begin

You need two files:

A source file — a video with a visible face (Lipsync Video Labs, Sync.co Lipsync) or a portrait photo (LTX Lipsync, Lipsync Image Labs). See Lipsync models to choose the right model for your input.
A voiceover — an audio recording. You can create one in Voice Studio.

Select your source

Click the Video button in the control bar (or Image if you're using LTX Lipsync or Lipsync Image Labs). A modal opens with three tabs: All, Favorites, and Uploaded. Click any thumbnail to select it, or use Upload new file to add a file.

Add a voiceover

Click the Voiceover button. The modal lists your saved voiceovers with a preview play button and duration display. Select one, or use Upload new file to add an audio file.

Generate

When both inputs are selected, the Generate button activates. Click it to start processing.

Generation time depends on the length of your source.

Output length matches your source video, not the voiceover. If the voiceover is longer than the video, it gets cut at the video's end. With image input (LTX Lipsync, Lipsync Image Labs), the voiceover length drives the output duration instead.

View your result

The generated video appears directly on the Lipsync page. Use the playback controls to preview it. To generate again with different inputs, swap the video or voiceover and click Generate once more.

To find and download your results later, see Lipsync result actions. For common issues, see Lipsync troubleshooting.

Create a lip-sync video

Before you begin

Select your source

Add a voiceover

Generate

View your result