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  3. Lipsync Speed

Dub Videos in Seconds with Lipsync Speed

Lipsync Speed takes any video you have and replaces its audio with a new track, automatically reshaping the speaker's lip movements to match. If you've ever dubbed a clip into another language or swapped a voiceover after recording, you know how much manual work that normally takes. This model cuts that process down to a single upload. It handles audio replacement and automatic duration adjustment, so if your new audio track is slightly longer or shorter than the original, the output adapts without cutting content. You can also strip background music from the source video before re-syncing, which gives the speech processing a cleaner signal. An optional speech clarity pass sharpens vocal quality in the final result. This fits cleanly into any content production workflow: record your video once, then swap the audio for different languages, updated scripts, or revised narrations without reshooting. Creators, translators, and marketing teams working with video at scale will find it especially practical. Upload your files and get a lip-synced result in seconds.

Official

Heygen

11 runs

Lipsync Speed

2026-04-16

Commercial Use

Dub Videos in Seconds with Lipsync Speed

Table of contents

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

Lipsync Speed takes a source video and a replacement audio file, then re-animates the speaker's mouth to match the new track with frame-accurate sync. If you've recorded a video in one language and need a dubbed version, or if your voiceover no longer fits the original clip, this model fixes that in a single pass. You upload both files, adjust a few settings, and get back a finished video where the lip movements match the audio as if it was recorded that way from the start. On Picasso IA, the whole process runs in your browser without installing anything.

How It Works

  • Upload your source video file containing the speaker whose lip movements you want to re-animate.
  • Upload the replacement audio track you want the video to sync to.
  • Choose your optional settings: strip background music from the original video, allow the output to adjust its length automatically if the new audio differs in duration, or turn on speech quality processing for cleaner audio in the final clip.
  • Submit the job and wait while the model analyzes the audio and re-renders the lip movements frame by frame.
  • Download the finished video with the new audio matched precisely to the on-screen speaker.

Frequently Asked Questions

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

Is it free to try? Yes, you can run Lipsync Speed without a paid subscription to test results. Credit usage depends on video length and settings, so check the pricing tab before submitting long clips.

How long does it take to get results? Processing time scales with your video's length. Short clips of 30 seconds or under typically finish in under a minute. Longer videos take more time, but the model prioritizes speed without sacrificing sync accuracy.

What video formats are supported? The model accepts standard video file formats. Upload your clip directly through the interface and the platform handles the rest. If you run into a format issue, converting to MP4 first usually resolves it.

Can I dub a video into a different language? Yes. Record or generate the translated audio separately, then upload it alongside the original video. The model re-animates the lip movements to fit the new language without any manual frame editing.

What does "enable dynamic duration" do? When turned on, the output video adjusts its total length to match the new audio. If your replacement audio is slightly longer or shorter than the original, the clip reflects that difference instead of cutting off or leaving silence.

What if the lip sync does not look right? Try running the model again with the speech quality option turned on, or trim your audio so it aligns more cleanly with the on-screen speaker. Small adjustments to audio timing often produce noticeably better results.

Credit Cost

Each generation consumes 10 credits

10 credits

or 50 credits for 5 generations

Features

Everything this model can do for you

Audio replacement

Swap the original audio track on any video file with a new one in a single upload.

Automatic lip re-animation

The model reshapes mouth movements frame by frame to match the replacement audio precisely.

Duration flexibility

Output length adjusts automatically when the new audio is longer or shorter than the original.

Background music removal

Strip background music from the source video before re-syncing for a cleaner final result.

Speech clarity processing

Sharpen vocal quality in the output without any manual audio editing.

Fast turnaround

Get a lip-synced video back in seconds rather than waiting through a manual editing session.

No video editing needed

Upload two files and the model handles all the frame-level animation work.

Use Cases

Dub a video from one language into another by uploading the translated audio and letting the model re-animate the speaker's lips to match.

Swap a recorded voiceover in a marketing video without reshooting the footage, just replace the audio file.

Correct a narration mistake in a finished video by uploading a clean re-recording and syncing the lips automatically.

Localize product demo videos for different regional markets by providing a new audio track for each language version.

Remove background music from a source video and apply a clean lip-synced voice track for podcast-style or educational content.

Create a version of a talking-head video with improved vocal clarity by enabling speech processing on the output.

Adjust the pacing of a video presentation by uploading a revised audio track with different timing, letting the output duration adapt automatically.

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