Seedance 2.0 Fast (Image-to-Video) generates cinematic videos from reference images and text prompts with native audio-visual synchronization, director-level control, and exceptional motion stability — optimized for faster generation at lower cost. Built on Seed's unified multimodal architecture.
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README
Seedance 2.0 Fast Image-to-Video
Seedance 2.0 Fast is the speed-optimized version of Seed's latest video generation model. The Image-to-Video mode generates cinematic videos from reference images and text prompts — faster and at 33% lower cost than the standard version, preserving the input image's subject and composition while adding expressive motion with native audio.
Key Features
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Speed-optimized generation Faster processing for quick turnaround, perfect for iteration and prototyping.
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33% lower cost $0.80 per 5 seconds vs $1.20 for the standard version.
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Image-faithful generation Preserves the reference image's subject identity, composition, and style.
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Multi-image reference support Guide generation with up to 4 reference images.
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Native audio-visual synchronization Generates video with synchronized audio in a single pass.
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Director-level control Camera movement, lighting, and character performance controlled through prompts.
Parameters
| Parameter | Required | Description |
|---|---|---|
| prompt | Yes | Detailed description of the cinematic scene |
| image | Yes | Start image URL to guide the video generation |
| last_image | No | Last frame image URL for video continuation |
| duration | No | Video length in seconds: 4-15 (default: 5) |
| aspect_ratio | No | Output format: 16:9, 9:16, 4:3, 3:4, 1:1, 21:9 (default: adaptive) |
| resolution | No | Output resolution: 480p, 720p (default), or 1080p |
How to Use
- Upload a start image — provide an image to guide the video generation.
- Write your prompt — describe the scene with cinematic detail.
- Set duration — choose any duration from 4 to 15 seconds.
- Run — submit and download your video.
Pricing
| Resolution | Duration | Cost |
|---|---|---|
| 480p | 5 s | $0.50 |
| 480p | 10 s | $1.00 |
| 480p | 15 s | $1.50 |
| 720p | 5 s | $1.00 |
| 720p | 10 s | $2.00 |
| 720p | 15 s | $3.00 |
| 1080p | 5 s | $2.50 |
| 1080p | 10 s | $5.00 |
| 1080p | 15 s | $7.50 |
Billing Rules
- Base rate (480p): $0.50 per 5 seconds
- 720p: 2x the 480p price
- 1080p: 5x the 480p price (2.5x the 720p price)
- Duration range: 4-15 seconds (continuous)
Best Use Cases
- Rapid Prototyping — Quickly iterate on image-to-video concepts.
- High-Volume Production — Cost-effective generation for large content libraries.
- Product Animation — Fast turnaround on product shot animations.
- A/B Testing — Generate multiple variations from the same reference image.
Pro Tips
- Use Fast for iteration, switch to standard Seedance 2.0 for final quality.
- Upload high-quality reference images for best subject preservation.
- Start with 5s to iterate, then extend once the look is right.
Notes
- Native audio generation included.
- Up to 4 reference images can be uploaded.
- Duration range: 4-15 seconds (continuous).
- Aspect ratio follows the input image composition.
Related Models
- Seedance 2.0 Image-to-Video — Standard version with highest quality.
- Seedance 2.0 Fast Text-to-Video — Fast text-guided video generation.
- Seedance 2.0 Text-to-Video — Standard text-guided video generation.