~/Seedance 1.5 Pro Video Extend
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Video to Video

Seedance 1.5 Pro Video Extend

Extend videos with natural motion and stable aesthetics.

Schema

Hint: You can drag and drop a file or click to upload

Example

Input

Video

Sample output shown above. The prompt and settings are pre-filled on the left.

Your request will cost $0.26 per run. ($0.052/s) For $10 you can run this model approximately 38 times.

One more thing:

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README

ByteDance / Seedance 1.5 Pro Video Extend — Video to Video (seedance-1.5-pro-video-extend)

Seedance 1.5 Pro Video Extend extends video clips with natural motion continuation, stable aesthetics, and upscaled output. Maintains scene coherence and visual consistency throughout the extension.

Highlights

  • •Natural motion continuation – Extends movement consistently with the input clip.
  • •Stable aesthetics – Maintains visual quality and consistency.
  • •Upscaled output – Enhanced resolution output.
  • •Audio generation – Optionally generate audio for the extended portion.
  • •Seed reproducible – Use seeds for consistent, reproducible results.

Parameters

  • •video* – Source video to extend
  • •prompt* – Description of what should happen next in the video
  • •duration – Extension duration in seconds
    • • 4 seconds
    • • 5 seconds
    • • 6 seconds
    • • 8 seconds
    • • 10 seconds
    • • 12 seconds
  • •resolution – Output video resolution
    • • 480p
    • • 720p
  • •generate_audio – Generate audio for the extended portion
  • •camera_fixed – Fix camera position during extension
  • •seed – Random seed for reproducibility (-1 for random)

Pricing

$0.26 per generation

ResolutionPrice
720p (with audio)$0.052
480p (with audio)$0.024
720p (no audio)$0.026
480p (no audio)$0.012

How to Use

  1. 1.Upload your source video.
  2. 2.Write a prompt describing what should happen next.
  3. 3.Select duration (4-12 seconds) and resolution.
  4. 4.Optionally enable/disable audio generation.
  5. 5.Generate and download the extended video.

More Models to Try

•Content creators: Extend short clips into longer videos.
•Video editors: Continue scenes with natural flow.
•Social media: Turn brief moments into engaging content.
•Production: Extend footage while maintaining quality.

Related Guides

Best AI Video APIs ComparedText to Video API GuideBest AI API Platforms 2026AI API Pricing Comparison

Frequently Asked Questions

What is the Seedance 1.5 Pro Video Extend API?
Extend videos with natural motion and stable aesthetics.
How much does Seedance 1.5 Pro Video Extend cost via API?
Seedance 1.5 Pro Video Extend costs $0.2600 per generation through Renderful's API. No subscription required — pay only for what you use.
How do I use Seedance 1.5 Pro Video Extend via API?
Sign up for a free Renderful API key, then send a POST request to the /v1/predictions endpoint with model "seedance-1.5-pro-video-extend". See the documentation at renderful.ai/docs for code examples in Python, JavaScript, and cURL.
What type of content does Seedance 1.5 Pro Video Extend generate?
Seedance 1.5 Pro Video Extend is a video to video model by ByteDance. Key features include: 4-12s extension, Video input, 480p/720p.
Is the Seedance 1.5 Pro Video Extend API fast?
Seedance 1.5 Pro Video Extend has medium generation speed. Results are delivered via polling or webhook callback for seamless integration.