Video

Seedance 2.0 Fast*

Changed on

Faster Seedance 2 with native audio, references, and frame animation.

  • This API endpoint includes additional Krea functionality beyond the base Seedance 2 model, including prompt enhancement and upscaling support.
post/generate/video/bytedance/seedance-2-fast

Request

  • Base URL: https://api.krea.ai
  • URL: https://api.krea.ai/generate/video/bytedance/seedance-2-fast
  • Auth: HTTP bearer

Headers

X-Webhook-URLstring uri

URL to receive a POST request when the job completes. The webhook will receive the job data including results. When signing is configured, deliveries are signed with ECDSA P-256 (ES256); verify them with the keys at https://api.krea.ai/.well-known/jwks.json (see X-Krea-Webhook-* headers). Treat requests without these headers as unauthenticated.

Request body

promptstring required
start_imagestring uri nullable

Can be an external URL, base64 data URI, or uploaded asset URL.

aspect_ratio'16:9' | '4:3' | '1:1' | '3:4' | '9:16' | '21:9'
end_imagestring uri nullable

Can be an external URL, base64 data URI, or uploaded asset URL.

reference_imagesstring[]
reference_videosstring[]
reference_audiosstring[]
durationnumber
resolution'480p' | '720p'
seedinteger
generate_audioboolean

Deprecated and ignored. Accepted until 2026-10-30T00:00:00Z, then rejected. Remove this field from requests.

upscaleboolean

When true, upscales the completed Seedance 2 video to produce an output up to 8K.

enhance_promptboolean

When true, rewrites the prompt for Seedance 2 using Krea prompt enhancement before video generation.

Response

The resulting job data. This will be returned in a pending state until the job is completed. See /jobs/{id} for retrieving the results.

job_idstring uuid required
status'backlogged' | 'queued' | 'scheduled' | 'processing' | 'sampling' | 'intermediate-complete' | 'completed' | 'failed' | 'cancelled' required
created_atstring date-time required
completed_atunknown required
resultunknown required
progressnumber nullable

Changes