# AI Lip Sync Generator

> AI lip sync redraws a speaker's mouth and lower face so the lips match a new audio track. Dubbing swaps the language, talking photos animate a still — lip sync is the step that makes either believable. In Kenerate's Avatar Talk (video mode) you upload a video and an audio file and pick one of 7 engines: VEED Lipsync 2 (up to 5 min), Sync Lipsync 3 and LatentSync (5 min), Sync React-1 (15 s, with emotion control) and InfiniteTalk (up to 10 min, including a two-speaker version). It works on the free plan. The demo below: an English podcast clip, dubbed to Spanish, then lip-synced.

URL: https://kenerateai.com/ai-lipsync-generator
Publisher: Kenerate AI (https://kenerateai.com)
Last updated: 27 September 2026

## Key facts
- Engines: 7
- Longest clip: 10 min
- Two speakers: Yes
- Free plan: Yes
- VEED Lipsync 2 (VEED): Video + audio, up to 5 min → Lips matched to the audio. Everyday dubbing and fixes.
- Sync Lipsync 3 (Sync Labs): Video + audio, up to 5 min → Five sync modes. Control when audio and video lengths differ.
- Sync React-1 (Sync Labs): Video + audio, up to 15 s → Lips, face or head. Emotion-controlled performances.
- LatentSync (ByteDance): Video + audio, 3 s–5 min → Lips matched to the audio. Open diffusion lip sync.
- InfiniteTalk Fast · Video (WaveSpeed): Video + audio, up to 10 min → Lips + natural head motion. Long talks and lessons.
- InfiniteTalk Duo · Video (WaveSpeed): Video + two audio tracks → 480p or 720p. Two-person conversations.

## Steps
1. Open Avatar Talk in video mode — Sign in — lip sync works on the free plan.
2. Upload the video — A clear, front-facing speaker works best. Up to 200 MB.
3. Add the new audio — A dub, a corrected line or a song. Up to 50 MB.
4. Pick an engine and generate — VEED Lipsync 2 by default; InfiniteTalk for up to 10 minutes; React-1 for emotion control.

## In depth

### How lip sync models work
The model reads the audio — ByteDance's LatentSync uses Whisper audio features — and regenerates the mouth region frame by frame to match, keeping the rest of the face and the scene untouched.

### Dub, then sync
For a translated video, dub the audio first (Kenerate's dubbing tool does 33 languages), then lip sync the video to the new track. The demo on this page is exactly that pipeline.

## FAQ
Q: What is AI lip sync?
A: AI that redraws a speaker's mouth and lower face so the lips match a new audio track — for dubbing, dialogue fixes or music.

Q: How is lip sync different from dubbing?
A: Dubbing replaces the voice with another language; lip sync changes the mouth to match audio. The demo shows both: the Spanish dub alone, then the dub with lip sync.

Q: What is a lip dub?
A: Originally a one-take music video where a crowd lip syncs to a song; today it also means AI dubbing with the lips re-synced.

Q: Does lip sync work in any language?
A: Yes — it follows the sounds in the audio, so any spoken language works.

Q: How long can the video be?
A: Up to 10 minutes on InfiniteTalk, 5 minutes on VEED Lipsync 2, Sync Lipsync 3 and LatentSync, 15 seconds on React-1.

Q: Can I lip sync a photo instead?
A: Yes — that's a talking photo. Use Avatar Talk in photo mode (19 engines).

Q: Is AI lip sync free?
A: It works on the free plan with sign-up credits; longer videos use one-time credit packs that never expire.

## Related pages
- AI video translator: https://kenerateai.com/ai-video-translator-and-dubbing
- Talking photo AI: https://kenerateai.com/talking-photo-ai
- Translate audio: https://kenerateai.com/translate-audio
- AI video generator: https://kenerateai.com/ai-video-generator

## Sources
- Kenerate video studio: https://kenerateai.com/app/video
- Sync Labs — lipsync models: https://sync.so/docs/models/lipsync
- VEED — Lip Sync API: https://www.veed.io/tools/lip-sync-api
- ByteDance — LatentSync: https://github.com/bytedance/LatentSync
- Wikipedia — Lip dub: https://en.wikipedia.org/wiki/Lip_dub