Seedance 2.0 · Reference to Video

Learn how to use Seedance 2.0 · Reference to Video.

Developer API pricing

Provider: SeeAPI

USD estimate: $0.0037 / credit · Estimated equivalent, not an additional charge.

480p: 20 credits/sec (≈ $0.075/sec, no video) | 12 credits/sec (≈ $0.045/sec, with video)

720p: 40 credits/sec (≈ $0.15/sec, no video) | 24 credits/sec (≈ $0.09/sec, with video)

1080p: 100 credits/sec (≈ $0.37/sec, no video) | 60 credits/sec (≈ $0.22/sec, with video)

4k: 200 credits/sec (≈ $0.75/sec, no video) | 124 credits/sec (≈ $0.46/sec, with video)

Note: No video = unit price × output duration; with video = unit price × (output + reference video duration).

Query Task Status

After submitting a task, use the unified query endpoint to check progress and retrieve results:

Get Task DetailsLearn how to query task status and retrieve generation results

Related Resources

Market Overview

Explore all available models

Credits & Billing

View credit balance, plans, and billing activity

Usage

Review API usage and credit consumption

Callbacks

Manage the secret used to verify generation webhook signatures. Callback URLs are supplied when you create each generation.

Webhook flow

Callback URL per generation.

Webhook signing key

Request

POST/v1/generations

AuthorizationSend your API key in the Authorization header using the Bearer scheme.Authorization: Bearer ****************

Header Params

stringrequired

A unique key for this generation request. Reuse the same value only when retrying the identical request body.

max length: 255

Example:: order-20260818-001

Body Params

application/json

stringrequired

The public model ID documented on this page. Use seedance-2 for this Endpoint.

Allowed:seedance-2

Default:: seedance-2
Example:: seedance-2

stringrequired

The public Endpoint ID for the selected model. Use the Endpoint whose input schema matches this request.

Allowed:reference-to-video

Default:: reference-to-video
Example:: reference-to-video

stringoptional

Optional public Provider ID. Omit this field to use the Endpoint's default Provider.

Allowed:seeapireplicate

Default:: seeapi
Example:: seeapi

objectrequired

Provider-specific input object. Its accepted fields and validation rules depend on the selected provider.

Provider parameters

SeeAPIseeapiDefault Provider

stringoptional

Describe the content to generate, including the subject, scene, action, visual style, camera behavior, and other important details.

min length: 3max length: 20000

array <uri>optional

Provide reference images for subject identity, composition, style, or visual consistency.

Provide at least one of reference_images, reference_video, or reference_audio.
Upload up to 9 images.
Accepted formats: JPEG, PNG, WebP, BMP, TIFF, and GIF.
Each image must be smaller than 30 MB.
Width and height must each be 301–5,999 pixels.
Aspect ratio must be greater than 0.4 and less than 2.5.

max items: 9

array <uri>optional

Provide reference videos for motion, structure, or visual behavior.

Provide at least one of reference_images, reference_video, or reference_audio.
Accepted formats: MP4 and MOV.
Upload up to 3 videos.
Each video must be 2–15 seconds and no larger than 50 MB.
Combined video duration must not exceed 15 seconds.
Supported input resolutions: 480p and 720p.
Frame rate must be 24–60 FPS.

max items: 3

array <uri>optional

Provide reference audio for timing, sound, or motion.

Provide at least one reference image or video when using reference_audio.
Accepted formats: MP3 and WAV.
Upload up to 3 audio files.
Each audio file must be 2–15 seconds and smaller than 15 MB.
Combined audio duration must not exceed 15 seconds.

max items: 3

stringoptional

Select the width-to-height ratio of the generated output.

Allowed:16:99:161:14:33:421:9adaptive

Default:: adaptive

numberoptional

Requested output duration in seconds. Choose a value supported by this Provider and Endpoint.

min: 4max: 15

Default:: 5

stringoptional

Select the requested output resolution. Higher resolutions may increase processing time and credit usage.

Allowed:480p720p1080p4k

Default:: 480p

booleanoptional

Whether the generated video should include an audio track when this Provider supports audio generation.

Default:: true

numberoptional

Optional random seed used to make generation behavior more reproducible. Reusing a seed does not guarantee identical output across Provider or model revisions.

min: 0max: 999999

booleanoptional

Return the generated video's last frame when available.

Default:: false

booleanoptional

Enable SeeAPI's upstream NSFW checker.

Default:: true

Replicatereplicate

stringoptional

Describe the content to generate, including the subject, scene, action, visual style, camera behavior, and other important details.

max length: 4000

array <uri>optional

Provide reference images for subject identity, composition, style, or visual consistency.

Provide at least one of reference_images, reference_video, or reference_audio.
Upload up to 9 images.
SeeAPI accepts JPEG, PNG, WebP, BMP, TIFF, and GIF.
Maximum file size: 30 MB per file.
SeeAPI validates width and height from 300 to 6,000 pixels.
SeeAPI validates aspect ratios from 0.4 to 2.5.

max items: 9

array <uri>optional

Provide reference videos for motion, structure, or visual behavior.

Provide at least one of reference_images, reference_video, or reference_audio.
Accepted formats: MP4 and MOV.
Upload up to 3 videos.
Each video must be 2–15 seconds and no larger than 50 MB.
Combined video duration must not exceed 15 seconds.
Supported input resolutions: 480p and 720p.
Frame rate must be 24–60 FPS.

max items: 3

array <uri>optional

Provide reference audio for timing, sound, or motion.

Provide at least one reference image or video when using reference_audio.
Accepted formats: MP3 and WAV.
Upload up to 3 audio files.
Each audio file must be 2–15 seconds and smaller than 15 MB.
Combined audio duration must not exceed 15 seconds.

max items: 3

stringoptional

Select the width-to-height ratio of the generated output.

Allowed:16:99:161:14:33:421:99:21adaptive

Default:: adaptive

numberoptional

Set the requested output duration in seconds.

Use -1 to let Replicate choose a supported duration automatically.

Allowed:-1456789101112131415min: -1max: 15

Default:: 5

stringoptional

Select the requested output resolution. Higher resolutions may increase processing time and credit usage.

Allowed:480p720p1080p4k

Default:: 480p

booleanoptional

Whether the generated video should include an audio track when this Provider supports audio generation.

Default:: true

numberoptional

Optional random seed used to make generation behavior more reproducible. Reusing a seed does not guarantee identical output across Provider or model revisions.

min: 0max: 999999

booleanoptional

Return the generated video's last frame when available.

Default:: false

string <uri>optional

Optional absolute HTTPS URL that receives terminal generation updates. If omitted, query the task-details endpoint with the returned generation ID.

max length: 2048

Example:: https://client.example.com/webhooks/seeapi

Responses

202Generation accepted and processing

Bodyapplication/json

objectrequired

stringrequired

Example:: task_xxx

stringrequired

Example:: seedance-2

stringrequired

Example:: reference-to-video

stringrequired

Allowed:seeapireplicate

seeapi: SeeAPI
replicate: Replicate

Example:: seeapi

stringrequired

Allowed:processing

Example:: processing

numberrequired

Estimated public credits. Values can include up to three decimal places.

Example:: 100

numberrequired

Consumed public credits, with up to three decimal places.

Example:: 0

numberrequired

Refunded public credits, with up to three decimal places.

Example:: 0

string <date-time>required

Example:: 2026-08-18T10:00:00Z

string <date-time>required

Example:: 2026-08-18T10:00:00Z

booleanrequired

Whether this response is an idempotent replay of an earlier request.

Example:: false

200Idempotent replay of an existing generation request

Bodyapplication/json

objectrequired

stringrequired

Example:: task_xxx

stringrequired

Example:: seedance-2

stringrequired

Example:: reference-to-video

stringrequired

Allowed:seeapireplicate

seeapi: SeeAPI
replicate: Replicate

Example:: seeapi

stringrequired

Allowed:processing

Example:: processing

numberrequired

Estimated public credits. Values can include up to three decimal places.

Example:: 100

numberrequired

Consumed public credits, with up to three decimal places.

Example:: 0

numberrequired

Refunded public credits, with up to three decimal places.

Example:: 0

string <date-time>required

Example:: 2026-08-18T10:00:00Z

string <date-time>required

Example:: 2026-08-18T10:00:00Z

booleanrequired

Whether this response is an idempotent replay of an earlier request.

Example:: false

400

Invalid JSON, parameters, Schema, or API Policy

401

Invalid API Key or authentication failed

402

Insufficient credits

403

The current request is not allowed

404

Model, Endpoint, or task not found

409

Idempotency conflict or the same request is still being created

413

Request body is too large

429

Too many requests

503

Service temporarily unavailable

Code Examples

Request

const response = await fetch("https://api.seeapi.com/v1/generations", {
  method: "POST",
  headers: {
    "Authorization": "Bearer YOUR_API_KEY",
    "Idempotency-Key": "order-20260818-001",
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
  "model": "seedance-2",
  "endpoint": "reference-to-video",
  "provider": "seeapi",
  "input": {
    "aspect_ratio": "adaptive",
    "duration_seconds": 5,
    "resolution": "480p",
    "generate_audio": true,
    "return_last_frame": false,
    "nsfw_checker": true
  },
  "callback_url": "https://client.example.com/webhooks/seeapi"
})
});

const result = await response.json();

ResponseHTTP 202

{
  "generation": {
    "id": "task_xxx",
    "model": "seedance-2",
    "endpoint": "reference-to-video",
    "provider": "seeapi",
    "status": "processing",
    "estimated_credits": 100,
    "consumed_credits": 0,
    "refunded_credits": 0,
    "created_at": "2026-08-18T10:00:00Z",
    "updated_at": "2026-08-18T10:00:00Z"
  },
  "idempotent": false
}

const response = await fetch("https://api.seeapi.com/v1/generations", { method: "POST", headers: { "Authorization": "Bearer YOUR_API_KEY", "Idempotency-Key": "order-20260818-001", "Content-Type": "application/json" }, body: JSON.stringify({ "model": "seedance-2", "endpoint": "reference-to-video", "provider": "seeapi", "input": { "aspect_ratio": "adaptive", "duration_seconds": 5, "resolution": "480p", "generate_audio": true, "return_last_frame": false, "nsfw_checker": true }, "callback_url": "https://client.example.com/webhooks/seeapi" }) }); const result = await response.json();

{ "generation": { "id": "task_xxx", "model": "seedance-2", "endpoint": "reference-to-video", "provider": "seeapi", "status": "processing", "estimated_credits": 100, "consumed_credits": 0, "refunded_credits": 0, "created_at": "2026-08-18T10:00:00Z", "updated_at": "2026-08-18T10:00:00Z" }, "idempotent": false }

Responses

202Generation accepted and processing

Bodyapplication/json

objectrequired

stringrequired

Example:: task_xxx

stringrequired

Example:: seedance-2

stringrequired

Example:: reference-to-video

stringrequired

Allowed:seeapireplicate

seeapi: SeeAPI
replicate: Replicate

Example:: seeapi

stringrequired

Allowed:processing

Example:: processing

numberrequired

Estimated public credits. Values can include up to three decimal places.

Example:: 100

numberrequired

Consumed public credits, with up to three decimal places.

Example:: 0

numberrequired

Refunded public credits, with up to three decimal places.

Example:: 0

string <date-time>required

Example:: 2026-08-18T10:00:00Z

string <date-time>required

Example:: 2026-08-18T10:00:00Z

booleanrequired

Whether this response is an idempotent replay of an earlier request.

Example:: false

200Idempotent replay of an existing generation request

Bodyapplication/json

objectrequired

stringrequired

Example:: task_xxx

stringrequired

Example:: seedance-2

stringrequired

Example:: reference-to-video

stringrequired

Allowed:seeapireplicate

seeapi: SeeAPI
replicate: Replicate

Example:: seeapi

stringrequired

Allowed:processing

Example:: processing

numberrequired

Estimated public credits. Values can include up to three decimal places.

Example:: 100

numberrequired

Consumed public credits, with up to three decimal places.

Example:: 0

numberrequired

Refunded public credits, with up to three decimal places.

Example:: 0

string <date-time>required

Example:: 2026-08-18T10:00:00Z

string <date-time>required

Example:: 2026-08-18T10:00:00Z

booleanrequired

Whether this response is an idempotent replay of an earlier request.

Example:: false

400

Invalid JSON, parameters, Schema, or API Policy

401

Invalid API Key or authentication failed

402

Insufficient credits

403

The current request is not allowed

404

Model, Endpoint, or task not found

409

Idempotency conflict or the same request is still being created

413

Request body is too large

429

Too many requests

503

Service temporarily unavailable