Free AI Lip Sync Generator
Match any audio to any video with HeyGen's AI-powered lip sync and get realistic lip-sync results in minutes. Paste a script, pick a face, and download polished video content ready to share.
Match any audio to any video with HeyGen's AI-powered lip sync and get realistic lip-sync results in minutes. Paste a script, pick a face, and download polished video content ready to share.
Text or audio to lip sync video
Paste a script or drop in a voice file. HeyGen's text to video engine aligns every word to natural mouth movements in videos and renders a finished talking video. Transform your videos with no editing skills.
Voice cloning preserved across languages
Clone your voice from a 15-second sample with AI voice cloning and keep the same tone in every lip-synced video. Translate the script into 175+ languages without re-recording a single line.
Talking photo from a single image
Turn any portrait into a speaking presenter and create realistic talking videos from a still. The AI photo avatar talking avatar generator animates the face with perfect lip sync, natural movement, and expressive delivery.
Multi-speaker and multi-face sync
Lip syncing for every face in a scene, not only the main speaker. The platform handles dialogue, group videos, and duet scenes without losing alignment. Each face gets its own audio track, perfectly matched to its own dialogue, frame by frame.
Studio-grade realism with Custom Motion
Direct the performance, not only the lips. This advanced lip sync AI technology takes prompts for gestures, gaze, posture, and expression, then plays the line with expressive AI delivery for lifelike talking output. The same script reads as a calm explainer or a social hook.
Use cases of AI lip sync
Manual dubbing takes weeks per language. Upload a video, pick a language, and the AI video translator re-voices and lip syncs to perfectly match new audio. Ship across 30 markets in an afternoon.
Need a localized soundtrack without re-rendering the face? Use AI dubbing for audio-only output that preserves the original voice. Online AI rendering, faster turnaround, same script across every language.
Repurpose one English upload into native lip-synced videos for every market. The YouTube video translator flow handles voice cloning, lip sync, and captions for fast video creation across channels.
Policy changed? Edit the script, regenerate with lip sync, and republish. The AI video editor lets you swap a paragraph or a language without booking talent again.
Take one UGC hook and personalize it across regions with AI talking variants. Use the AI lip sync generator to dub each variant to the local audience, then A/B test in days instead of months.
Make a singing photo from any portrait and bring videos to life. Drop in a vocal track, pick a face, and the AI lip sync animation syncs audio to mouth shapes. Great for promos, fan edits, and personalized birthday videos.
How to Lip Sync Videos with AI in 4 Easy Steps
Create an AI lip sync video in four steps, from upload to share-ready download with realistic results.
Drop in your video, image, or avatar. Files render in HD, with 4K available for finished work.
Paste a script for AI narration, upload an existing voice track, or clone your own voice.
The model aligns every phoneme to lip movements with natural AI accuracy, re-rendering the face.
Preview, tweak the timing, and export as MP4. Send straight to social, an LMS, or your team.
AI lip sync technology uses artificial intelligence to match lip movements and mouth movements in videos to any audio track. The lip sync engine performs lip synchronization phoneme by phoneme. That's how AI lip sync works in practice.
Yes. HeyGen offers a free AI lip sync video plan with lip-synced videos included, no credit card required. The free lip sync tier covers short clips for testing, social posts, and personal projects. Upgrade only when you need longer videos or commercial output.
Paste your script into the AI lip sync generator, pick a voice, choose a video or photo for the face, and click generate. The AI lip sync tool writes the audio, syncs the lips, and renders the finished video. Short videos finish in under five minutes.
The best lip sync AI tools track more than the lips. HeyGen's Avatar V advanced AI handles upper-body movement, jaw and tongue dynamics, and Custom Motion to produce realistic AI talking avatars that lip sync perfectly.
Modern AI lip syncing matches or beats hand-animated dubbing for most footage. Sync accuracy is frame-level: high-quality lip alignment to facial movements adapts to head turns and lighting. Accurate lip output is the default.
Yes. HeyGen supports lip sync in 175+ languages with voice cloning that preserves the speaker's tone. Wurth Group shipped a 65-min presentation in 8 languages in 4 days, cutting translation costs 80%.
Final ready-to-share video files export as MP4 in 16:9, 9:16, and 1:1 ratios, with optional captions from the subtitle generator. Vertical 9:16 fits TikTok, Reels, and Shorts; 16:9 is ready for YouTube, LinkedIn, or an LMS.
Yes, that's the most common use case. The same pipeline translates the script, clones the voice, syncs audio in the target language, and re-syncs the lip-sync to match. Dub videos in 30 markets without splitting AI tools or workflows.
Both work. Upload an audio file and the AI syncs the lips to it directly to synchronize lip movements with your track. Or clone your voice from a 15-second sample and have the model speak any script in your own voice across every language.
Yes. Combine lip sync with AI face swap to replace the on-screen talking head and re-sync the audio in the same pass. Useful for UGC, paid ads, and marketing videos when you want to test a new face without reshooting.
ChatGPT itself does not generate video or lip sync output. HeyGen runs natively inside the ChatGPT App Store, so you can prompt ChatGPT to create talking videos with lip sync and get the finished MP4 back. The video model does the lip sync work; ChatGPT is the front door.
Short lipsync clips (under one minute) render in two to five minutes. Longer videos and high-res exports take 10 to 20 minutes. Multilingual batch jobs (one script, ten languages) finish in roughly the time of a single render plus translation overhead.
Yes. The HeyGen API offers pay-as-you-go pricing at $0.05 per second for Avatar V and Avatar IV lip sync output, with a $5 minimum top-up. No subscription required for API access. Use it for personalization at scale, in-app video generation, or batch dubbing pipelines.
Yes, on any paid plan. Generated videos can be used in ads, client deliverables, paid social, and published content. Voice cloning requires consent from the voice owner. Avatar use follows the standard usage license shipped with your plan.
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