Seedance 1.5 Pro API Parameters

The Seedance 1.5 Pro contract accepted by this Volcano Engine China API.

Provider: Volcano Engine China · Last verified: 2026-06-28

Model summary

json

{
  "model": "seedance-1-5-pro",
  "prompt": "A cinematic coastal landscape at golden hour",
  "resolution": "720p",
  "duration": 5
}

Field	Type	Required	Default	Values / range	Validation	Upstream field
`model`	model	Yes	seedance-1-5-pro	public model name	Local	`model`
`first_frame_url`	file	No	—	HTTP(S) URL	Local	`first_frame_url`
`last_frame_url`	file	No	—	HTTP(S) URL	Local	`last_frame_url`
`prompt`	textarea	No	A polished product video with smooth subject motion, controlled camera movement, realistic lighting, and a clean commercial finish.	string	Local	`prompt`
`draft_task_id`	text	No	—	string	Local	`draft_task_id`
`generate_audio`	toggle	No	true	true or false	Local	`generate_audio`
`resolution`	segmented	No	720p	480p, 720p, 1080p	Local	`resolution`
`ratio`	segmented	No	adaptive	adaptive, 16:9, 4:3, 1:1, 3:4, 9:16, 21:9	Local	`ratio`
`duration`	slider	No	5	4–12; special: -1	Local	`duration`
`return_last_frame`	toggle	No	false	true or false	Local	`return_last_frame`
`service_tier`	segmented	No	default	default, flex	Local	`service_tier`
`draft`	toggle	No	false	true or false	Local	`draft`
`seed`	number	No	—	-1–4294967295	Local	`seed`
`camera_fixed`	toggle	No	false	true or false	Local	`camera_fixed`
`watermark`	toggle	No	false	true or false	Local	`watermark`
`execution_expires_after`	number	No	—	3600–259200	Local	`execution_expires_after`
`safety_identifier`	text	No	—	string	Local	`safety_identifier`
`callback_url`	url	No	—	HTTPS URL	Typed passthrough	`callback_url`
`content`	array	One input source required	—	Validated text/media items and model-supported roles	Local	`content`