What is AI lip sync and how does it work?

AI lip sync is a technology that takes a face — from a photo or video — and an audio track, then generates realistic mouth, jaw, and facial movements that match the spoken words. On invideo, you upload your face input and audio, and the AI analyzes the speech waveform to map phonemes to corresponding mouth shapes frame by frame. It also adds subtle secondary motion like head tilts, blinking, and eyebrow raises so the result looks natural rather than robotic. The entire process runs in your browser and typically renders a clip in under a minute.

Can I lip sync a still photo instead of a video?

Yes. This is one of the most popular use cases. You upload a single portrait photo and pair it with an audio file or AI-generated voiceover. The AI animates the face from scratch — generating head movement, blinking, and precise lip sync from a completely static image. The output is a full video clip that looks like the person in the photo is actually speaking. It works best with front-facing portraits where the mouth and jaw are clearly visible, but it handles slight angles too.

Does AI lip sync work in languages other than English?

Yes. invideo supports 50+ languages for voiceovers and voice cloning, and the lip sync feature handles all of them. The AI maps audio phonemes to mouth shapes regardless of language — so it works equally well with Spanish, Hindi, Mandarin, Arabic, Japanese, and others. A common workflow is to record your audio in one language, use invideo's dubbing tools to translate it, and then run lip sync on the translated audio so the mouth movements match the new language. This is especially useful for creators and businesses producing content for international audiences.

Is the AI lip sync generator on invideo free?

You can start using lip sync on invideo for free. The free tier gives you access to the lip sync feature and a limited number of generative credits. Each lip sync generation consumes credits based on the length of the clip. For higher-volume work, invideo offers Plus, Max, and Generative paid plans with more credits, faster rendering, and 4K export. No credit card is required to sign up and try it.

What kind of audio input does the lip sync tool accept?

You can upload pre-recorded audio files (MP3, WAV, etc.), record a voiceover directly inside invideo, or generate speech using invideo text-to-speech in 50+ languages. You can also clone your own voice with just a 30-second recording and use that cloned voice as the audio input. The feature works with spoken dialogue, narration, and singing — though spoken word generally produces the most accurate sync.

Can I use AI lip sync for commercial projects?

Yes. All content generated on invideo paid plans is cleared for commercial use. This includes lip sync videos used in ads, marketing campaigns, product demos, e-learning courses, and client deliverables. Just make sure you have the rights to the face and audio you use, if you're using your own likeness or an AI avatar you created, you're covered. invideo's identity verification for avatars and AI Twins adds an extra layer of compliance.

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AI Lip Sync

Make any face speak. Upload a photo or video, drop audio file or clone your voice, and invideo syncs lip movements to match perfectly, in 50+ languages. Free to start.

What You Can Do with AI Lip Sync

Sync Audio to Any Face

Upload a photo or video of a face and pair it with any audio. AI generates realistic mouth movements, jaw motion, and expressions that match the speech.

Dub Videos in 50+ Languages

Record once, lip sync in any language. AI re-animates the speaker's mouth to match translated audio — no reshooting, no awkward mismatches.

AI Avatars & Twins

Create an AI Twin of yourself and have it deliver any script with synced lip movements, natural expressions, and your cloned voice.

Animate Still Photos

Turn a single portrait into a talking head video. Invideo adds realistic lip movement and subtle facial motion to a completely static image — blinking, head tilts, and jaw movement included.

Music & Song Videos

Sync characters to songs and create engaging music video content. Upload any track, pair it with a face, and watch invideo match every syllable to realistic mouth movements for scroll-stopping musical content.

Fix Audio in Videos

Re-sync lip movements where audio doesn't match — useful for dubbing, voiceover replacements, and post-production fixes. Save hours of reshooting by letting AI handle the correction.

Features of AI Lip Sync

Photo-to-Video

Upload a single still image and an audio clip, and invideo generates a full video with natural head motion, blinking, and accurate lip sync — not just mouth movement. The result looks like a real person talking.

Multi-Lingual

Works with 50+ languages out of the box. Combine with invideo's voice cloning or AI voiceover tools to dub and lip sync in one seamless workflow — no third-party tools required.

Identity Preservation

The speaker's face stays consistent across the entire clip. No warping, no drift, no identity shifts — even on longer audio tracks. What goes in is exactly what comes out, just animated.

Accurate Mouth Mapping

Handles complex phonemes, fast speech, and whispers. Jaw, lips, and teeth move independently for realistic articulation across languages. Every syllable is mapped to the correct mouth shape.

Expression & Emotion Transfer

Invideo reads the tone of the audio — emphasis, pauses, emotion — and reflects it in facial expressions. Eyebrows, cheeks, and eyes respond naturally alongside the mouth for truly lifelike delivery.

Works with Any Face Input

Accepts front-facing portraits, webcam recordings, AI-generated faces, and existing video clips. No special formatting or resolution requirements — upload and go.