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Seedance 2 Fast Image to Video: Image-to-Video

SD 2 Image-to-Video (Fast) by ByteDance. Quickly animates a start-frame image into video with 4–15 second duration at reduced cost. SD 2 Image-to-Video (Fast) quickly animates a reference image into video using ByteDance's SD 2 model at lower cost. Uses the provided image as the opening frame and generates 4–15 second videos.

Interactive model controls

SD 2 Image-to-Video (Fast) by ByteDance. Quickly animates a start-frame image into video with 4–15 second duration at reduced cost.

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Overview

About this model

SD 2 Image-to-Video (Fast) quickly animates a reference image into video using ByteDance's SD 2 model at lower cost. Uses the provided image as the opening frame and generates 4–15 second videos.

1Rapid Previews: Quickly test how an image animates before using the Pro model.
2High Volume: Animate many images at scale with lower per-unit cost.
3Social Media: Create animated content from photos efficiently.
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Pricing & Value

Cost analysis

muapiapp$0.15 per second (e.g. $0.75 for 5 seconds)

Pay per second of video generated.

Fal.ai$0.3024/sec (high) / $0.2419/sec (basic)

Fal.ai charges $0.3024/sec for high quality and $0.2419/sec for basic. muapiapp Fast at $0.15/sec is 50% cheaper than Fal.ai's basic rate.

Replicate$0.3024/sec (high) / $0.2419/sec (basic)

Replicate charges the same as Fal.ai — $0.3024/sec (high), $0.2419/sec (basic). muapiapp Fast at $0.15/sec is 50% cheaper than Replicate's basic rate.

** Competitor pricing is estimated based on similar model architectures and usage tiers.

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Technical Details

Configuration schema

Promptstring

Text description guiding the video animation. Use @character:<id> to reference a completed Seedance 2 Character generation.

Default ValueThe person walks forward with a smile.
Reference Imagesarray

1 image uses it as the start frame (first_last_frames mode). 2–9 images switches to omni_reference mode — reference them in your prompt with @image1, @image2, etc.

Default Valuehttps://d3adwkbyhxyrtq.cloudfront.net/ai-images/186/712345784292/4a8c5c70-abcc-4920-873e-b0e219986453.jpg
Aspect RatioEnum (6 options)

Output video aspect ratio.

Default Value16:9
Duration (seconds)int

Video duration in seconds.

Default Value5
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Implementation Guide

Developer documentation

How to Use SD 2 Image-to-Video (Fast)

  1. Upload your image: Provide a JPEG, PNG, or WebP image via images_list.

  2. Write your prompt: Describe the desired motion and animation.

  3. Set duration: Between 4 and 15 seconds.

  4. Submit and poll: Use the returned request_id to poll for results.

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Common Questions

Frequently asked

What image formats are supported?

JPEG, PNG, and WebP are supported.

Can I control the aspect ratio?

No — the output aspect ratio is determined automatically by your input image dimensions.

How does Fast compare to Pro?

The Fast model uses a lighter inference pass and is quicker and cheaper than Pro, with a slight reduction in output detail.