Use Seedance 1.5 Pro through Rivya Public API v1 with model id seedance-1-5-pro, supported inputs, parameters, Files API rules, credits, and response examples.

Available via APIText or URL ready; reference modes use Files APIVideo

API model id

seedance-1-5-pro

Inputs

text, file

Files API

Required for reference modes

Base credits

Capability

Video

Billing

FIXED

Prompt limit

2500 characters

Request contract

Send the model id at the top level. Model-specific controls belong in params.

Key	Type	Required	Default	Description
model	string	Yes	seedance-1-5-pro	Use the seedance-1-5-pro API model id.
prompt	string	Yes	-	Maximum 2500 characters for this model.
params	object	No	-	Model-specific parameter object. Use the rows below for allowed keys.
client_request_id	string	No	-	Optional client-side id for tracing requests in your system.

Model parameters

Key	Type	Required	Default	Range	Options	Description
resolution	select	No	720p	-	480p, 720p, 1080p	Resolution
duration	select	No	8	-	4, 8, 12	Duration
generate_audio	select	No	false	-	false, true	Generate audio
aspectRatio	select	No	1:1	-	1:1, 4:3, 3:4, 16:9, 9:16, 21:9	Aspect ratio
fixed_lens	select	No	false	-	false, true	Controls whether the shot should behave more like a fixed camera. Turning it on keeps camera motion more restrained; turning it off allows more obvious movement.

Upload policy

Upload reference files first, then place the returned URL and duration token inside params.referenceMediaItems.

Reference rule

Reference image: Upload up to 2 image files for image projects.

Max files

Accepted file kinds

image

Duration token

Video and audio references should carry durationToken from /api/v1/files when duration verification is required.

kind	Max size	MIME types
image	10 MB	image/jpeg, image/png, image/webp

Minimal request

{
  "model": "seedance-1-5-pro",
  "prompt": "A cinematic product reveal with smooth camera movement",
  "params": {
    "resolution": "720p",
    "duration": "8",
    "generate_audio": "false",
    "aspectRatio": "1:1",
    "fixed_lens": "false"
  }
}

Reference-file request

{
  "model": "seedance-1-5-pro",
  "prompt": "A cinematic product reveal with smooth camera movement",
  "params": {
    "resolution": "720p",
    "duration": "8",
    "generate_audio": "false",
    "aspectRatio": "1:1",
    "fixed_lens": "false",
    "referenceMediaItems": [
      {
        "url": "https://cdn.example.com/reference-image.png",
        "kind": "image",
        "name": "reference-image.png",
        "mimeType": "image/png"
      }
    ]
  }
}

Create response

The create endpoint returns a public task id. Poll the status endpoint until the task succeeds or fails.

{
  "id": "task_seedance_1_5_pro_example",
  "status": "queued",
  "model": "seedance-1-5-pro",
  "reserved_credits": 28,
  "final_credits": 0,
  "created_at": "2026-05-11T00:00:00.000Z",
  "updated_at": "2026-05-11T00:00:00.000Z",
  "result": null,
  "error": null
}

Common errors

validation_failed, insufficient_credits, idempotency_conflict, rate_limited, not_found

Some modes require Files API reference uploads.

Seedance 1.5 Pro API Integration