Seedance 1.5 Pro is the mature, battle-tested member of ByteDance’s video lineup, prized for dependable prompt adherence and clean motion at a friendlier credit cost than the 2.0 flagship. Its standout spec is duration flexibility: 4, 8, or 12 seconds per generation, with the 12-second option giving room for a complete beat — setup, action, payoff — in a single render.
One page in the Create studio covers both of its workflows. Type a prompt for text-to-video, or attach up to two input images to steer an image-to-video generation. A fixed-lens switch locks the virtual camera in place for tripod-style shots — invaluable for product tables and talking scenes — and a generate-audio toggle adds sound to the render when you want it.
Where Seedance 1.5 Pro really separates itself is framing: eight aspect ratios, from 21:9 ultrawide through 3:2 and 2:3 photo formats down to 9:16 vertical, at 480p, 720p, or 1080p. If your deliverable list spans print-style crops and phone screens, this is the rare model that natively covers all of them.
See what's possible on Flux 3 AI
Sample generations from the platform — write your own prompt to see what Seedance 1.5 Pro does with it.
Seedance 1.5 Pro vs similar AI video models
Specs from the live catalog — every model below is available on the same account.
| Spec | Seedance 1.5 Pro | Seedance 2.0 | Seedance V1 |
|---|---|---|---|
| Max clip length | 12s | 15s | 10s |
| Durations | 4s, 8s, 12s | 4s, 5s, 8s, 10s, 15s | 5s, 10s |
| Resolutions | 480p · 720p · 1080p | 480p · 720p · 1080p · 4k | 480p · 720p · 1080p |
| Aspect ratios | 8 | 6 | 7 |
| Audio | |||
| Image to video | |||
| Reference images | up to 9 | up to 1 | |
| Keyframes | |||
| Negative prompt |
Capabilities reflect what each model supports on Flux 3 AI today.
What makes Seedance 1.5 Pro stand out
12-second duration
Choose 4, 8, or 12 seconds — the long option fits a full scene beat without chaining multiple generations.
Eight aspect ratios
From 21:9 ultrawide to 2:3 portrait, the widest framing menu in the Seedance family covers every placement.
Fixed-lens control
Lock the camera for perfectly static shots — ideal for product spins, interviews, and stop-motion styles.
Audio when you want it
A generate-audio toggle adds sound to the pass; skip it and renders complete faster at lower cost.
Two-image input
Attach up to two images to guide image-to-video generations toward your exact subject and look.
Efficient credit cost
Delivers near-flagship quality below Seedance 2.0 pricing, making it the family’s value workhorse.
Popular use cases
Why creators run Seedance 1.5 Pro on Flux 3 AI
- Compare Seedance 1.5 Pro against Seedance 2.0 or Hailuo on the same prompt, side by side.
- Every 12-second render downloads watermark-free into the same library as your other models.
- The built-in prompt-enhance tool sharpens your scene description before you commit credits.
Seedance 1.5 Pro specs & capabilities
Output
- Clip duration4, 8, 12 seconds
- Resolutions480p · 720p · 1080p
- Aspect ratios16:9 · 9:16 · 1:1 · 4:3 · 3:4 · 3:2 · 2:3 · 21:9
- Generation modesText to Video · Image to Video
Controls
- Image to video (start frame)
- Reference images
- First & last frame keyframes
- Audio generation
- Negative prompt
- Video input / editing
- Extend video
Seedance 1.5 Pro prompt examples
Copy one as a starting point, or send it straight to the Create studio.
“Fixed camera on a barista pouring latte art in a sunlit café, steam drifting past the window, milk swirling into a rosette, warm morning light, shallow focus.”
Fixed-lens tripod framing for smooth pour physics.
“A vertical 9:16 shot of a skateboarder dropping into a graffiti-covered bowl, camera tilting to follow the arc, golden-hour lens flares, gritty and energetic.”
Tests vertical framing with fast subject tracking.
“Twelve seconds of a paper boat drifting down a rain-filled gutter, low tracking camera at water level, ripples reflecting streetlights, melancholic dusk mood.”
Uses the full 12-second duration for a complete story beat.
Create with Seedance 1.5 Pro in three steps
Describe your idea
Write a prompt or upload a starting image — the more specific the scene, motion, and style, the better Seedance 1.5 Pro performs.
Pick Seedance 1.5 Pro & settings
Choose duration, resolution, and aspect ratio. The studio shows the exact credit cost before you generate.
Generate & download
Seedance 1.5 Pro renders in the cloud — track progress in your library, then download watermark-free or share with a link.
Seedance 1.5 Pro questions, answered
What is Seedance 1.5 Pro?
Seedance 1.5 Pro is ByteDance’s mid-generation video model, generating 4-, 8-, or 12-second clips at up to 1080p from text or image input. It is available on Flux 3 AI alongside the rest of the Seedance family, using the same credit balance.
How long are Seedance 1.5 Pro videos?
Generations run 4, 8, or 12 seconds. The 12-second ceiling is longer than most competing models offer in one pass, so many scenes that would normally require stitching can finish as a single render.
Does Seedance 1.5 Pro support image-to-video?
Yes. You can attach up to two input images and the model animates from them, keeping your subject’s look intact. Text-to-video works from a prompt alone on the same model page.
What does the fixed-lens option do?
Fixed lens locks the virtual camera so the framing never drifts during the clip — the AI equivalent of putting the camera on a tripod. Use it for product showcases, dialogue setups, or any shot where camera movement would distract.
Can Seedance 1.5 Pro add sound to a video?
It can, via an optional generate-audio toggle. Enable it and the clip renders with audio included; disable it for a silent, lower-cost pass. Sound is opt-in rather than produced by default.
Which aspect ratios does Seedance 1.5 Pro offer?
Eight in total: 16:9, 9:16, 1:1, 4:3, 3:4, 3:2, 2:3, and 21:9, each at 480p, 720p, or 1080p. That range covers widescreen, vertical, square, and photo-style crops without cropping in an editor afterward.
Seedance 1.5 Pro or Seedance 2.0 — how do I choose?
Go with 2.0 when you need 4K, 15-second clips, or nine-reference consistency. Choose 1.5 Pro for the 12-second duration at a lower credit cost, the eight-ratio framing menu, and the fixed-lens camera lock that 2.0 does not expose.
Do Seedance 1.5 Pro downloads have a watermark?
No — every video you render on Flux 3 AI downloads clean at full quality, and new accounts receive free credits to test Seedance 1.5 Pro before choosing a plan on the pricing page.
How much does Seedance 1.5 Pro cost to use?
Generation runs on credits rather than a per-model subscription. The exact credit price of a render appears in the Create studio before you confirm it, and credits come from the plans and packs listed on the pricing page. Shorter, lower-resolution clips consume fewer credits.
Do I need a ByteDance account to use Seedance 1.5 Pro?
No. A single Flux 3 AI account covers Seedance 1.5 Pro along with every other model on the platform, so there is no separate ByteDance signup, subscription, or API key to manage — one login and one credit balance handle everything.