Dialogue from a text prompt
Write the spoken line directly in your prompt — the model generates both the voice and the matching lip movement. No microphone, no voice actor, no separate audio file to import and align.
Lip Sync Video AI
Lip sync video AI generates a speaking character whose mouth movements match spoken audio automatically. Instead of recording a voice, building an avatar, and aligning phonemes by hand, you describe the line in plain text and the model renders voice and synchronized lip motion together. On Sunra this runs on the same generators you already use — pick the engine that fits the shot rather than learning a separate dubbing tool.
Features
What you can do
Pick the engine for the shot
Kling 3.0 gives frame-accurate phoneme mapping for talking-head dialogue; Veo 3.1 layers speech into a full ambient soundscape. Compare both on Canvas and keep the better take.
Speak in any language
Generate the same character delivering a line in English, Chinese, Japanese, Spanish, and more — each with phonetics-aware lip shapes. Launch one script across every market without re-recording.
Emotion and tone control
Direct the delivery in the prompt — whisper, shout, laugh, choke up. Facial micro-expressions move with the vocal tone, so the performance reads as intentional, not robotic.
Up to 15 seconds per clip
Long enough for an ad read, a product pitch, or a line of dialogue. For longer scenes, chain clips in Flow — character identity carries across cuts.
Get started
How to use
1
Open the video generator
Go to Sunra Video. For dialogue-first shots pick Kling 3.0; for scenes with rich ambient sound pick Veo 3.1.
2
Write the spoken line in your prompt
Include the dialogue in quotes — e.g. *A news anchor looks at the camera and says "Breaking news: the future of video is here."* The model generates the voice and matching lip motion.
3
Set language and tone
Name the language (English, Japanese, Spanish…) and the emotional register (calm, excited, whispering). The model adjusts phoneme mapping and expression to match.
4
Generate and review the sync
Generate, then watch with audio on. Check consonant clusters and emotional transitions; regenerate with slightly reworded dialogue if any syllables drift.
5
Download or extend in Flow
Download the clip with embedded audio. For longer dialogue, chain clips in Flow to hold character identity across cuts.
Showcase
Built for creators
Whether you're a solo creator, an agency, or a brand — every model adapts to how you work.
Talking-head delivery to camera
A young woman in a flowing summer dress walks through a sunflower field and speaks to camera: "This is what creative freedom looks like." Warm golden hour light, 50mm lens. 16:9.
Street style with spoken narration
A model in a vintage leather jacket walks down a graffiti-lined alley and narrates: "Style isn't about what you wear — it's how you move." Lo-fi hip-hop ambient. 16:9, 35mm.
Product pitch with synced voice
A luxury perfume bottle rotates on marble as a presenter says: "Essence — captured in light." The voice syncs to brand text appearing on screen. Studio lighting, dark background. 16:9.
Who it's for
Use cases
Multi-language product demos
Generate one spokesperson delivering your pitch in English, Japanese, and Spanish — each with native lip sync. No voice actors, no dubbing studio, no re-shoots.
Talking-head social content
Create AI presenters for TikTok, Reels, and Shorts that speak directly to camera with natural mouth movement. Publish daily without filming yourself.
Turn writing into video
Drop a blog intro or podcast key point into a prompt and get a character delivering it on screen. Repurpose written content into video without a studio.
Dialogue-driven shorts
Write a script, generate each character's lines as separate clips, and edit them together — multi-shot mode keeps faces consistent across cuts.
Compare
Lip Sync Video AI vs Traditional Dubbing
| Sunra Lip Sync AI | Record + Dub + Align | |
|---|---|---|
| Sync method | Voice and lips generated together — sync is built in | Audio recorded separately, then aligned by hand or by a second tool |
| Setup time | Zero — describe the line in your prompt | Record audio → import → align → render (30+ min per clip) |
| Multi-language | Native phoneme mapping per language, one prompt | Separate dubbing pass or re-recording per language |
| Emotion control | Expression follows vocal tone automatically | Manual keyframing or fixed preset emotions |
| Cost | Free daily credits cover it — no add-on fee | Voice actor fees + dubbing-tool subscription |
Community
Loved by creators worldwide
Join thousands of creators, agencies, and brands who use Sunra every day.
FAQ
Questions & answers
What is lip sync video AI?
It's AI that generates a character whose mouth movements match spoken audio automatically. You write the line as text, and the model produces both the voice and the synchronized lip motion in a single render — no recording, no manual frame alignment.
How do I make a lip sync video on Sunra?
Open Sunra Video, select a model with native audio (Kling 3.0 or Veo 3.1), and write the spoken line in quotes inside your prompt. Generate, review the sync with audio on, and download the clip with embedded voice.
Which model gives the best lip sync?
Can I lip sync in languages other than English?
Yes. State the language in your prompt (e.g. "speaks in Japanese") and the model uses that language's phoneme set for accurate mouth shapes. The same script can be generated across English, Chinese, Japanese, Spanish, Portuguese, and more.
How long can a lip sync clip be?
Up to 15 seconds of continuous dialogue per generation — enough for an ad read or a short scene. For longer sequences, chain clips in Flow, which carries character identity across cuts.
Is lip sync video AI free?
Yes. Free daily credits cover lip sync generation on Sunra — there's no separate feature charge. See pricing for higher-volume plans.