OmniHuman 1.5 comes from ByteDance, whose research teams have pushed the state of the art in animating humans from minimal input. The model’s specialty is turning a single image of a person into video with convincing, natural movement — posture, gesture, and expression that read as human rather than puppet-like. On Flux 3 AI it is the go-to for building a digital presenter without a camera crew.
Using it is a short loop: upload the image that defines your avatar, describe the performance you want in the prompt, optionally pick a style preset, and generate. Clips run 4, 6, or 8 seconds, so the model suits presenter intros, character beats, and looping avatar content rather than long monologues.
Output arrives at 720p or 1080p in 16:9 or 9:16. Teams often pair it with its family neighbors: OmniHuman for expressive body animation, InfiniteTalk when an audio file needs exact lip-sync, and VolcEngine Lip-sync when existing footage needs new dialogue. All three share one credit balance on Flux 3 AI.
See what's possible on Flux 3 AI
Sample generations from the platform — write your own prompt to see what OmniHuman 1.5 does with it.
OmniHuman 1.5 vs similar AI video models
Specs from the live catalog — every model below is available on the same account.
| Spec | OmniHuman 1.5 | InfiniteTalk | VolcEngine Lip-sync |
|---|---|---|---|
| Max clip length | 8s | 8s | 8s |
| Durations | 4s, 6s, 8s | 4s, 6s, 8s | 4s, 6s, 8s |
| Resolutions | 720p · 1080p | 720p · 1080p | 720p · 1080p |
| Aspect ratios | 2 | 2 | 2 |
| Audio | |||
| Image to video | |||
| Reference images | up to 1 | up to 1 | up to 1 |
| Keyframes | |||
| Negative prompt |
Capabilities reflect what each model supports on Flux 3 AI today.
What makes OmniHuman 1.5 stand out
Single-image avatars
One picture of a person is the whole setup — OmniHuman 1.5 builds the moving performance from that alone.
Natural human motion
ByteDance’s human-animation research shows in the result: gestures and expressions that avoid the stiff, uncanny look.
Short-form durations
Generate 4, 6, or 8 second clips — sized for intros, avatar loops, and character moments in larger edits.
Prompt-directed acting
Your text prompt shapes the performance, and style presets adjust the visual treatment without prompt surgery.
Popular use cases
Why creators run OmniHuman 1.5 on Flux 3 AI
- One credit balance powers OmniHuman 1.5 alongside InfiniteTalk and the rest of the 41+ model catalog.
- Audition the same avatar image on OmniHuman and rival lip-sync models side by side.
- Watermark-free downloads mean presenter clips drop straight into client edits with nothing to remove.
OmniHuman 1.5 specs & capabilities
Output
- Clip duration4, 6, 8 seconds
- Resolutions720p · 1080p
- Aspect ratios16:9 · 9:16
- Generation modesImage to Video
Controls
- Image to video (start frame)
- Reference images
- First & last frame keyframes
- Audio generation
- Negative prompt
- Video input / editing
- Extend video
OmniHuman 1.5 prompt examples
Copy one as a starting point, or send it straight to the Create studio.
“The presenter greets viewers with open palms, says “welcome back to the channel,” leans in slightly, then gestures toward an imaginary screen on her left”
Presenter-style acting with directed gestures and eyeline
“A jazz singer sways to a slow rhythm, closes her eyes on the high note, raises the microphone, subtle stage light flickering across her face”
Expressive musical performance testing body rhythm and emotion
“An animated startup founder pitches excitedly, counting three points on his fingers, eyebrows rising for emphasis, finishing with a confident nod to camera”
Checks fine hand gestures and emphatic facial expression
Create with OmniHuman 1.5 in three steps
Describe your idea
Write a prompt or upload a starting image — the more specific the scene, motion, and style, the better OmniHuman 1.5 performs.
Pick OmniHuman 1.5 & settings
Choose duration, resolution, and aspect ratio. The studio shows the exact credit cost before you generate.
Generate & download
OmniHuman 1.5 renders in the cloud — track progress in your library, then download watermark-free or share with a link.
OmniHuman 1.5 questions, answered
What is OmniHuman 1.5?
OmniHuman 1.5 is ByteDance’s avatar-video model. From a single image of a person it generates short video with natural human movement, making it a practical way to create digital presenters and character clips on Flux 3 AI without filming anyone.
Who makes OmniHuman?
ByteDance — the company behind TikTok — develops OmniHuman as part of its human-animation research line. Version 1.5 is the release available to generate with on Flux 3 AI.
What input does OmniHuman 1.5 need?
An image of the person you want to animate, plus a text prompt describing the motion or scene. That image anchors the avatar’s identity while the model produces the movement.
How long and what quality are OmniHuman clips?
Each generation is 4, 6, or 8 seconds at 720p or 1080p, in 16:9 or 9:16. For longer avatar content, generate multiple clips and assemble them in an editor.
OmniHuman 1.5 vs InfiniteTalk — which one for my project?
Choose by input: OmniHuman 1.5 animates a person from an image with prompt-directed motion, while InfiniteTalk exists specifically to sync a face to an audio recording. Presenter with a script recorded? InfiniteTalk. Expressive avatar performance? OmniHuman 1.5.
Can I animate any photo with OmniHuman?
Technically the model works from a person image, but you must hold the rights to the likeness you animate. Flux 3 AI’s terms prohibit impersonating real people without consent, so use your own photos, licensed images, or generated characters.
Is there a watermark on OmniHuman videos?
Downloads from your Flux 3 AI library are watermark-free at full quality. New accounts get free credits, so you can produce a first avatar clip before choosing a plan.