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  3. Lipsync Precision

Dub Any Video with Lipsync Precision, Free Online

Lipsync Precision takes any video and replaces its audio with a new track, then re-animates the speaker's lip movements frame by frame to match. This solves a real problem for video creators who need to dub content into a new language, update spoken copy after filming, or replace a damaged audio track without reshooting. The model uses avatar-inference lip sync to match mouth shape to speech with high frame-level accuracy. You can strip background music from the original video before processing, so the new audio sits cleanly in the output. Optional audio processing sharpens the final voice track, and the output duration automatically adjusts when your new audio runs longer or shorter than the original. This fits naturally into post-production workflows: record your voiceover, upload the video, and get a dubbed version back in minutes. No studio, no reshooting, no manual rotoscoping. If the first result doesn't sit right, adjust the settings and run it again.

Official

Heygen

20 runs

Lipsync Precision

2026-04-16

Commercial Use

Dub Any Video with Lipsync Precision, Free Online

Table of contents

  • Overview
  • How It Works
  • Frequently Asked Questions
  • Credit Cost
  • Features
  • Use Cases
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Overview

Lipsync Precision replaces or dubs the audio in any video while re-animating the speaker's mouth to match the new track, frame by frame. If you have ever watched a dubbed film and noticed the lips never quite match the words, this model solves that problem directly. It works on any video with a visible face, making it practical for voiceovers, content localization, and correcting audio mistakes without reshooting footage. On Picasso IA, you upload your source video and replacement audio, and the model handles the rest without any technical setup.

How It Works

  • Upload your source video file containing the speaker whose lips you want re-synced.
  • Upload the replacement audio, whether that is a dubbed track, a corrected take, or a generated voiceover.
  • Choose whether to strip the original background music before processing begins.
  • Turn on dynamic duration if your new audio runs shorter or longer than the original, so the output length adjusts to match.
  • Optionally activate audio clarity processing to sharpen the dubbed voice in the final output, then download the result.

Frequently Asked Questions

Do I need programming skills or technical knowledge to use this? No, just open Lipsync Precision on Picasso IA, adjust the settings you want, and hit generate.

Is it free to try? Yes, you can run Lipsync Precision without a subscription to test it on your footage. Credits are consumed per generation, and the free allocation on your account covers your first runs.

How long does it take to get results? Processing time depends on the length of your video. Most short clips return within a minute or two, and longer videos may take a few minutes more.

What output formats are supported? The model returns a video file with the re-animated lip movements baked in. Download it and drop it into any editing or publishing workflow without extra conversion steps.

Can I adjust the output if the sync looks slightly off? Re-trimming the audio to align precisely with the start of speech often helps. You can also regenerate with slightly adjusted settings to get a tighter result.

What happens if my audio is longer or shorter than the original video? Enable the dynamic duration option before running the model. It adjusts the output length to match the new audio, so the video does not cut off early or run past it.

Can I use the output video for commercial projects? Yes, the output is yours to use in client work, social media, or professional productions. Check the usage terms on your Picasso IA account for any plan-specific conditions.

Credit Cost

Each generation consumes 20 credits

20 credits

or 100 credits for 5 generations

Features

Everything this model can do for you

High-accuracy lip sync

Matches mouth movements to the replacement audio frame by frame using avatar inference.

Background music removal

Strip the original music track from the source video before processing.

Dynamic output duration

Automatically extends or trims the output to match the runtime of the new audio.

Speech quality mode

Optional processing sharpens the spoken voice in the final dubbed video.

Simple two-input workflow

Upload a video and an audio file and the model handles the animation.

Instant online access

Run the model directly in a browser with no software installation or technical setup.

Use Cases

Dub a talking-head video into a new language by swapping the original audio for a translated voice recording

Replace a recorded voiceover with a corrected take without going back on set or reshooting the scene

Sync a presenter's lip movements to a revised script after filming is already finished

Convert a recorded interview into a dubbed version for audiences who speak a different language

Strip background music from the source video before syncing in a cleaner studio voiceover

Update a product demo video's narration after the script changed, without re-recording the presenter on camera

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