namifusion

Seedance 2.0 Fast reference-to-video

doubao/seedance-2-0-fast/reference-to-video

Seedance 2.0 Fast (Video-Edit) edits an input video from a natural-language prompt at a faster, cheaper tier. Built on ByteDance Seed's unified multimodal architecture, it preserves subject identity, composition, and motion while rewriting lighting, style, weather, environment, or specific elements as instructed. Ready-to-use REST API, best performance, no coldstarts, affordable pricing.

Examples

Seedance 2.0 Fast reference-to-video example 1

Parameters

NameTypeDefaultDescription
imagesReference Imagesimage_upload_groupOptional reference image URLs to guide the edit (subject identity, style, etc.).
videosVideovideo_upload_groupURL of the input video to edit. Videos longer than 15s are trimmed to 15s.
audiosReference Audiosaudio_upload_groupOptional reference audio URLs to guide audio generation.
promptPrompttextareaDescribe the edit you want applied to the input video. The prefix "Edit the input video." is added automatically.
aspect_ratioAspect RatioselectAspect ratio of the output video. Adapts to the input if not specified.
resolutionResolutionselect720pOutput video resolution.
duration *DurationsliderOutput video length in seconds (4-15). Auto-detected from the input video if not specified.
generate_audioGenerate AudiobooleantrueWhether to generate native audio for the edited output. Defaults to true. When set to false, the input video's audio track is preserved on the output instead.

API

Call this model through one unified REST API. Get a key on the API Keys page.

curl -X POST https://www.namifusion.com/api/v1/marketplace/run/doubao/seedance-2-0-fast/reference-to-video \
  -H "Authorization: Bearer sk-YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "input": { "images": ..., "videos": ..., "audios": ... } }'
Seedance 2.0 Fast reference-to-video API — Pricing, Playground & Docs | NamiFusion