1
Upload your video
Drop an MP4 or MOV clip with a clearly visible face — up to 10 seconds and 100MB. Front-facing framing and an unobstructed mouth give the AI lip sync engine the cleanest tracking signal.
AI lip sync video generator · Kling Lip Sync inside
AI Lip Sync Video Generator
Upload a video with a visible face, add speech audio — or generate it with the built-in text to speech — and the AI lip sync engine re-animates the mouth, jaw, and expressions to match the new track. Cost is shown before every generation.
Lip Sync
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MP4/MOV • 2-10s • 720p-1080p • Max 100MB
Click or drag to upload
MP3/WAV/M4A/AAC • Max 5MB
Balance: 0
Cost: 0 (~3.6/s)
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Video + audio in, synced talking video outBuilt-in text to speech with voice and speed controlCredit cost shown before every generation
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Open toolWhat AI Lip Sync Delivers
One source video and one speech track go in — a talking video where the subject appears to genuinely speak the new audio comes out.
Sync that follows the speech
The AI lip sync engine reads the timing and rhythm of your audio and generates matching mouth shapes, jaw articulation, and supporting facial movement, so the lip sync video reads as spoken, not dubbed-on.
Any voice track — recorded or generated
Upload an MP3, WAV, M4A, or AAC file, or skip the microphone entirely: the built-in text to speech turns your script into a voice track with selectable voices and speed, right inside the lip sync editor.
New languages without a reshoot
Reuse one spokesperson clip across markets: swap the audio for another language and the AI lip sync re-syncs the mouth to the new track — no second take, no new presenter, no manual animation.
Controls before credits
The editor shows the audio duration, the credit cost, and a live preview before anything is billed. Output keeps your source resolution and downloads as an MP4 ready to edit or post.
How the AI Lip Sync Generator Works
From source footage to a synced talking video — the four parts of the workflow, and what each one does for you.
Upload a Video, Add Any Speech Track
Everything starts from two files: a video with a clearly visible face and a speech track. The AI lip sync generator accepts MP4 and MOV clips up to 10 seconds and 100MB — talking-head footage, spokesperson clips, animated characters, or avatar renders — and MP3, WAV, M4A, or AAC audio up to 5MB. Front-facing or lightly angled faces with an unobstructed mouth give the sync engine the cleanest signal, and the editor validates both inputs before you spend a credit.
Mouth Movement That Follows the Voice, Not Just the Beat
A convincing lip sync video needs more than an opening and closing mouth. The AI analyzes the speech waveform — phoneme timing, pauses, and emphasis — and renders coordinated mouth shapes, jaw motion, and cheek movement that track the dialogue continuously across the clip. The subject's identity, lighting, and background stay untouched; only the speech-related facial movement is re-animated. Review the result frame by frame in the preview and rerun with a cleaner track when a transition looks off.
Built-In Text to Speech — Script to Talking Video in One Flow
No microphone, no problem. Switch the audio source to text to speech inside the same editor: paste your script, pick a voice, adjust the speaking speed, and generate the voice track in place. The confirmed track feeds straight into the lip sync pass, so a written script becomes a finished talking video without leaving the page or stitching tools together. TTS credits and lip sync credits are itemized separately before you generate.
Dub One Clip Into Every Market's Language
Localization is where AI lip sync pays for itself. Keep the spokesperson clip you already have, record or generate the same script in the target language, and generate a new lip sync video per market — the presenter appears to speak each language natively. E-commerce sellers use this to turn one product video into regional ad variants; educators use it to offer the same lesson in multiple languages. Rights to the footage, voice, and likeness remain your responsibility, as with any dubbing workflow.
Make a Lip Sync Video in Three Steps
No animation software, no motion capture — a source video and a voice track are the whole setup.
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Add speech audio or text to speech
Upload an MP3, WAV, M4A, or AAC track up to 5MB, or open the built-in text to speech tab to generate the voice from your script with selectable voices and speed.
3
Generate and review
Check the credit cost, generate, and preview the lip sync video in the browser. Download the MP4 when the sync reads naturally, or adjust the track and rerun — iteration uses the same two inputs.
Who Uses AI Lip Sync?
From solo creators to e-commerce teams, AI lip sync serves anyone who needs a talking video without a reshoot.
Content Creators
Add clean voiceover to footage where the original audio was noisy, re-record a flubbed line without refilming, or make a character deliver custom dialogue. The AI lip sync video generator turns existing clips into fresh talking videos for YouTube, TikTok, and Reels.
E-commerce & Marketing Teams
Film one product spokesperson clip and lip sync it into every campaign's script and every market's language. Regional ad variants, seasonal re-voicing, and A/B message testing all start from the same source video.
Educators & Course Builders
Offer the same lesson in multiple languages: record the instructor once, then dub each language track with AI lip sync so the teacher appears to speak every version naturally — keeping the instructor-student rapport that makes video courses work.
Corporate Training
Update training and announcement videos by replacing the audio instead of scheduling an executive reshoot. New policy, new script, same presenter — the lip sync generator keeps internal content current at a fraction of the production cost.
Game & Animation Studios
Prototype character dialogue scenes with real voice tracks before committing to manual animation. AI lip sync gives animatics and production drafts synchronized mouth movement for review, and scales to multilingual character voices.
Virtual Spokesperson Builders
Pair a digital avatar or AI-generated presenter with text to speech to produce talking-head content entirely from a script — no camera, no microphone, no actor booking. Ideal for always-on brand spokesperson formats.
AI Lip Sync FAQ
How AI lip sync works, what inputs get the best results, language support, credits, and what to expect from a generated talking video.
AI lip sync generates new mouth and facial movement in a video so the subject appears to speak a different audio track. You provide a video with a visible face and a speech track; the model analyzes the audio timing and renders matching mouth shapes, jaw motion, and supporting expressions while keeping the subject's identity, lighting, and background intact. The output is a generative adaptation — review the result and rerun with a cleaner track when a transition needs another pass.
Start Creating Today
Give Your Video a New Voice
Upload a clip with a visible face, add a speech track or generate one with text to speech, and review your first AI lip sync video in minutes — the credit cost is always shown before you generate.
Video + audio in, synced MP4 outBuilt-in text to speech voicesAny spoken language trackCredit cost shown before generationSource resolution preserved