Seedance 2.0 Fast (reference-to-video) · Video to video

← Seedance Model name: bytedance/seedance-2.0/fast/reference-to-video
Generation type: video_to_video
Endpoint: POST /api/asset_generator/

Pricing

Duration	480p	720p
4s	2.25	5
5s	2.75	6.25
6s	3.25	7.5
7s	4	8.5
8s	4.5	9.75
9s	5	11
10s	5.5	12.25
11s	6	13.5
12s	6.5	14.75
13s	7	15.75
14s	7.75	17
15s	8.25	18.25

Prices are per output. When a request asks for several outputs, the charge is this price times the number of outputs.

Quick start

The example uses sample media from our CDN. Swap in publicly accessible URLs for your own files.

curl --request POST \
  --url https://api.creatify.ai/api/asset_generator/ \
  --header 'Content-Type: application/json' \
  --header 'X-API-ID: your-api-id' \
  --header 'X-API-KEY: your-api-key' \
  --data '{
    "model_name": "bytedance/seedance-2.0/fast/reference-to-video",
    "input_params": {
      "prompt": "The woman from the reference image talks to the camera in a bright café, with the gestures of the reference video.",
      "image_urls": [
        "https://d35ghwdno3nak3.cloudfront.net/tutorial/avatar-aurora/recommendation-4.jpg"
      ],
      "video_urls": [
        "https://d35ghwdno3nak3.cloudfront.net/tutorial/asset-generator/sample-video.mp4"
      ],
      "audio_urls": [
        "https://d35ghwdno3nak3.cloudfront.net/user/18165/2025-09-15/2d20-req-3VV9TLO6qlTOflMMQBRe-0-s.mp3"
      ]
    }
  }'

import requests

response = requests.post(
    "https://api.creatify.ai/api/asset_generator/",
    headers={"X-API-ID": "your-api-id", "X-API-KEY": "your-api-key"},
    json={
        "model_name": "bytedance/seedance-2.0/fast/reference-to-video",
        "input_params": {
            "prompt": "The woman from the reference image talks to the camera in a bright café, with the gestures of the reference video.",
            "image_urls": [
                "https://d35ghwdno3nak3.cloudfront.net/tutorial/avatar-aurora/recommendation-4.jpg"
            ],
            "video_urls": [
                "https://d35ghwdno3nak3.cloudfront.net/tutorial/asset-generator/sample-video.mp4"
            ],
            "audio_urls": [
                "https://d35ghwdno3nak3.cloudfront.net/user/18165/2025-09-15/2d20-req-3VV9TLO6qlTOflMMQBRe-0-s.mp3"
            ]
        },
    },
)
print(response.json()["id"])

Input parameters

Send these fields in input_params.

string

required

The text prompt used to generate the video

integer

Random seed to control video generation. Use -1 for random.Minimum: -1. Maximum: 4294967295.

string

default:"auto"

Duration of the video in secondsAllowed values: "auto", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15".

string

default:"720p"

Video resolution - 480p for faster generation, 720p for balanceAllowed values: "480p", "720p".

string

default:"16:9"

The aspect ratio of the generated videoAllowed values: "auto", "21:9", "16:9", "4:3", "1:1", "3:4", "9:16".

string[]

Up to 9 reference images (JPEG, PNG, WebP, max 30MB each).Maximum items: 9.

string[]

Up to 3 reference videos (MP4, MOV, 2-15s combined, max 50MB total).Maximum items: 3.

string[]

Up to 3 audio files (MP3, WAV, max 15s combined, 15MB per file). Requires at least one image or video reference.Maximum items: 3.

boolean

default:true

Whether to generate synchronized audio for the video

Complete JSON schema

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "prompt"
  ],
  "properties": {
    "seed": {
      "type": "integer",
      "title": "Seed",
      "minimum": -1,
      "maximum": 4294967295,
      "description": "Random seed to control video generation. Use -1 for random.",
      "x-advance-settings": true
    },
    "prompt": {
      "type": "string",
      "title": "Prompt",
      "description": "The text prompt used to generate the video",
      "x-support-types": [
        "mentions"
      ]
    },
    "duration": {
      "enum": [
        "auto",
        "4",
        "5",
        "6",
        "7",
        "8",
        "9",
        "10",
        "11",
        "12",
        "13",
        "14",
        "15"
      ],
      "type": "string",
      "title": "Duration",
      "default": "auto",
      "description": "Duration of the video in seconds"
    },
    "resolution": {
      "enum": [
        "480p",
        "720p"
      ],
      "type": "string",
      "title": "Resolution",
      "default": "720p",
      "description": "Video resolution - 480p for faster generation, 720p for balance",
      "x-advance-settings": true
    },
    "aspect_ratio": {
      "enum": [
        "auto",
        "21:9",
        "16:9",
        "4:3",
        "1:1",
        "3:4",
        "9:16"
      ],
      "type": "string",
      "title": "Aspect Ratio",
      "default": "16:9",
      "description": "The aspect ratio of the generated video"
    },
    "image_urls": {
      "type": "array",
      "items": {
        "type": "string",
        "limit_description": "Max file size: 30MB. Supported formats: JPEG, PNG, WebP."
      },
      "title": "Reference Images",
      "maxItems": 9,
      "description": "Up to 9 reference images (JPEG, PNG, WebP, max 30MB each).",
      "max_file_size": 31457280,
      "max_pixels": 36000000,
      "min_height": 300,
      "min_width": 300,
      "max_height": 6000,
      "max_width": 6000,
      "min_aspect_ratio": 0.4,
      "max_aspect_ratio": 2.5,
      "x-mention-prefix": "image"
    },
    "video_urls": {
      "type": "array",
      "items": {
        "type": "string",
        "limit_description": "Max total size: 50MB. Duration: 2-15s combined. Supported formats: MP4, MOV. Resolution: 480p-720p."
      },
      "title": "Reference Videos",
      "maxItems": 3,
      "description": "Up to 3 reference videos (MP4, MOV, 2-15s combined, max 50MB total).",
      "max_file_size": 52428800,
      "min_duration": 2,
      "max_duration": 15,
      "max_total_duration": 15,
      "min_pixels": 409600,
      "max_aspect_ratio": 2.5
    },
    "audio_urls": {
      "type": "array",
      "items": {
        "type": "string",
        "limit_description": "Max file size: 15MB. Duration: max 15s combined. Supported formats: MP3, WAV."
      },
      "title": "Reference Audio",
      "maxItems": 3,
      "description": "Up to 3 audio files (MP3, WAV, max 15s combined, 15MB per file). Requires at least one image or video reference.",
      "max_file_size": 15728640,
      "min_duration": 2,
      "max_duration": 15,
      "max_total_duration": 15
    },
    "generate_audio": {
      "type": "boolean",
      "title": "Generate Audio",
      "default": true,
      "description": "Whether to generate synchronized audio for the video",
      "x-advance-settings": true
    }
  }
}

Response

The request returns the task with status: "initializing". Poll GET /api/asset_generator/{id}/ until status is done or failed, or pass a webhook_url to be notified. A finished task lists its files in assets and the credits it charged in credits_used.

Get Started

URL to Video

Aurora

Boreal

Stock AI Avatar

Custom Avatar

Custom Template

Asset Generator

Ad Clone

Text to Speech

IAB Images

HTML Interactive Ad

Link Parser

AI Ad Script

Stock AI Voice

Stock AI Music

Workspace

AI Shorts (Deprecated)

AI Editing (Deprecated)

Product Video (Deprecated)

Seedance 2.0 Fast (reference-to-video) · Video to video

Pricing

Quick start

Input parameters

Response

​Pricing

​Quick start

​Input parameters

​Response

Pricing

Quick start

Input parameters

Response