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POST
Seedance 2.5 480p V2V
seedance-2.5-480p-v2v is the Seedance 2.5 video-edit SKU at 480p: send a source video and describe the change. Confirm live rates on the models page.
string
required
Set to seedance-2.5-480p-v2v.
string
required
Describe the subject, action, camera movement, lighting, and audio intent.
string
default:"10"
Output length: 4 to 30 seconds.
string
One of 21:9, 16:9, 4:3, 1:1, 3:4, 9:16, adaptive. adaptive follows the input image or video. Send it explicitly; do not send a pixel size.
string[]
Up to 30 public http/https image URLs, each up to 30 MB (JPEG, PNG, WEBP, BMP, GIF).
string
required
One public source video URL, up to 200 MB (MP4, MOV). Send a string, not an array. The gateway reads each clip’s length from its MP4/MOV header with HTTP range requests and bills that length, rounded up to whole seconds (up to 30 s). Host clips where range requests work, such as S3, R2, or most CDNs; a clip that cannot be measured bills 30 s.
boolean
default:"true"
Set to false for a silent video.

Request

The response returns a queued task id. Poll and download with the same model:
See the Video API workflow for polling intervals, webhooks, and failure handling.
Media inputs must be public http or https URLs. Private network addresses and local files are rejected. Failed generations are not charged.