seedance-2-ext Video Generation

curl --request POST \
  --url https://toapis.com/v1/videos/generations \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "<string>",
  "prompt": "<string>",
  "seconds": 123,
  "size": "<string>",
  "resolution": "<string>",
  "reference_image": "<string>",
  "reference_images": [
    "<string>"
  ],
  "callback_url": "<string>",
  "client_business_id": "<string>",
  "trace_id": "<string>"
}
'

import requests

url = "https://toapis.com/v1/videos/generations"

payload = {
    "model": "<string>",
    "prompt": "<string>",
    "seconds": 123,
    "size": "<string>",
    "resolution": "<string>",
    "reference_image": "<string>",
    "reference_images": ["<string>"],
    "callback_url": "<string>",
    "client_business_id": "<string>",
    "trace_id": "<string>"
}
headers = {
    "Authorization": "<authorization>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: '<authorization>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    model: '<string>',
    prompt: '<string>',
    seconds: 123,
    size: '<string>',
    resolution: '<string>',
    reference_image: '<string>',
    reference_images: ['<string>'],
    callback_url: '<string>',
    client_business_id: '<string>',
    trace_id: '<string>'
  })
};

fetch('https://toapis.com/v1/videos/generations', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://toapis.com/v1/videos/generations",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'model' => '<string>',
    'prompt' => '<string>',
    'seconds' => 123,
    'size' => '<string>',
    'resolution' => '<string>',
    'reference_image' => '<string>',
    'reference_images' => [
        '<string>'
    ],
    'callback_url' => '<string>',
    'client_business_id' => '<string>',
    'trace_id' => '<string>'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <authorization>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://toapis.com/v1/videos/generations"

	payload := strings.NewReader("{\n  \"model\": \"<string>\",\n  \"prompt\": \"<string>\",\n  \"seconds\": 123,\n  \"size\": \"<string>\",\n  \"resolution\": \"<string>\",\n  \"reference_image\": \"<string>\",\n  \"reference_images\": [\n    \"<string>\"\n  ],\n  \"callback_url\": \"<string>\",\n  \"client_business_id\": \"<string>\",\n  \"trace_id\": \"<string>\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "<authorization>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://toapis.com/v1/videos/generations")
  .header("Authorization", "<authorization>")
  .header("Content-Type", "application/json")
  .body("{\n  \"model\": \"<string>\",\n  \"prompt\": \"<string>\",\n  \"seconds\": 123,\n  \"size\": \"<string>\",\n  \"resolution\": \"<string>\",\n  \"reference_image\": \"<string>\",\n  \"reference_images\": [\n    \"<string>\"\n  ],\n  \"callback_url\": \"<string>\",\n  \"client_business_id\": \"<string>\",\n  \"trace_id\": \"<string>\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://toapis.com/v1/videos/generations")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = '<authorization>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"model\": \"<string>\",\n  \"prompt\": \"<string>\",\n  \"seconds\": 123,\n  \"size\": \"<string>\",\n  \"resolution\": \"<string>\",\n  \"reference_image\": \"<string>\",\n  \"reference_images\": [\n    \"<string>\"\n  ],\n  \"callback_url\": \"<string>\",\n  \"client_business_id\": \"<string>\",\n  \"trace_id\": \"<string>\"\n}"

response = http.request(request)
puts response.read_body

{
  "id": "tsk_vid_xxx",
  "object": "generation.task",
  "model": "seedance-2-ext",
  "status": "in_progress",
  "progress": 10,
  "created_at": 1781577600
}

POST

videos

generations

seedance-2-ext Video Generation

curl --request POST \
  --url https://toapis.com/v1/videos/generations \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "<string>",
  "prompt": "<string>",
  "seconds": 123,
  "size": "<string>",
  "resolution": "<string>",
  "reference_image": "<string>",
  "reference_images": [
    "<string>"
  ],
  "callback_url": "<string>",
  "client_business_id": "<string>",
  "trace_id": "<string>"
}
'

import requests

url = "https://toapis.com/v1/videos/generations"

payload = {
    "model": "<string>",
    "prompt": "<string>",
    "seconds": 123,
    "size": "<string>",
    "resolution": "<string>",
    "reference_image": "<string>",
    "reference_images": ["<string>"],
    "callback_url": "<string>",
    "client_business_id": "<string>",
    "trace_id": "<string>"
}
headers = {
    "Authorization": "<authorization>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: '<authorization>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    model: '<string>',
    prompt: '<string>',
    seconds: 123,
    size: '<string>',
    resolution: '<string>',
    reference_image: '<string>',
    reference_images: ['<string>'],
    callback_url: '<string>',
    client_business_id: '<string>',
    trace_id: '<string>'
  })
};

fetch('https://toapis.com/v1/videos/generations', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://toapis.com/v1/videos/generations",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'model' => '<string>',
    'prompt' => '<string>',
    'seconds' => 123,
    'size' => '<string>',
    'resolution' => '<string>',
    'reference_image' => '<string>',
    'reference_images' => [
        '<string>'
    ],
    'callback_url' => '<string>',
    'client_business_id' => '<string>',
    'trace_id' => '<string>'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <authorization>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://toapis.com/v1/videos/generations"

	payload := strings.NewReader("{\n  \"model\": \"<string>\",\n  \"prompt\": \"<string>\",\n  \"seconds\": 123,\n  \"size\": \"<string>\",\n  \"resolution\": \"<string>\",\n  \"reference_image\": \"<string>\",\n  \"reference_images\": [\n    \"<string>\"\n  ],\n  \"callback_url\": \"<string>\",\n  \"client_business_id\": \"<string>\",\n  \"trace_id\": \"<string>\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "<authorization>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://toapis.com/v1/videos/generations")
  .header("Authorization", "<authorization>")
  .header("Content-Type", "application/json")
  .body("{\n  \"model\": \"<string>\",\n  \"prompt\": \"<string>\",\n  \"seconds\": 123,\n  \"size\": \"<string>\",\n  \"resolution\": \"<string>\",\n  \"reference_image\": \"<string>\",\n  \"reference_images\": [\n    \"<string>\"\n  ],\n  \"callback_url\": \"<string>\",\n  \"client_business_id\": \"<string>\",\n  \"trace_id\": \"<string>\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://toapis.com/v1/videos/generations")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = '<authorization>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"model\": \"<string>\",\n  \"prompt\": \"<string>\",\n  \"seconds\": 123,\n  \"size\": \"<string>\",\n  \"resolution\": \"<string>\",\n  \"reference_image\": \"<string>\",\n  \"reference_images\": [\n    \"<string>\"\n  ],\n  \"callback_url\": \"<string>\",\n  \"client_business_id\": \"<string>\",\n  \"trace_id\": \"<string>\"\n}"

response = http.request(request)
puts response.read_body

{
  "id": "tsk_vid_xxx",
  "object": "generation.task",
  "model": "seedance-2-ext",
  "status": "in_progress",
  "progress": 10,
  "created_at": 1781577600
}

seedance-2-ext is the promotional-channel model in the Seedance 2.0 family, offering the standard discounted tier:

Text-to-video and reference-image generation
Reference videos, reference audios, first/last-frame control, and video editing are not supported
The API is asynchronous: submitting returns a generation.task; fetch results via the video task status endpoint.

Authentication

string

required

All requests require a Bearer Token. Get your key from the API Key management page and add it to the request header:

Authorization: Bearer YOUR_API_KEY

Body

string

default:"seedance-2-ext"

required

ToAPIs public model name. Always use seedance-2-ext.

string

Describe the scene, camera movement, subject actions, style, and sound atmosphere.

integer

Output video duration in seconds, from 4 to 15. The compatible field duration is also accepted; do not pass both.

string

Output aspect ratio. Supported: 16:9, 9:16, 4:3, 3:4, 1:1, 21:9. The compatible field aspect_ratio is also accepted.

string

default:"720p"

Output resolution. Fixed to 720p.

string

Public URL of a single reference image. For multiple images use reference_images.

string[]

Array of reference image URLs, up to 9. You can also use image_with_roles with role set to reference_image.

string

ToAPIs task completion callback URL. See Task Webhooks.

string

Your order number or business task ID. Stored with the task; you can also query it via GET /v1/videos/generations/{client_business_id}.

string

Custom trace ID for request tracking.

Media Combination Rules

Request content	Supported	Notes
Prompt only	Yes	Text-to-video
Reference images	Yes	Up to 9
Reference video / reference audio	No	Use `seedance-2.5-ext` instead
First / last frame	No	Frame mode is not supported

Request Examples

Text-to-Video

curl --request POST \
  --url https://toapis.com/v1/videos/generations \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "seedance-2-ext",
    "prompt": "City skyline at sunset, camera slowly pulling back.",
    "seconds": 5,
    "size": "16:9",
    "resolution": "720p"
  }'

Reference Image

curl --request POST \
  --url https://toapis.com/v1/videos/generations \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "seedance-2-ext",
    "prompt": "The product in image 1 slowly rotates for display.",
    "seconds": 10,
    "size": "1:1",
    "reference_images": [
      "https://example.com/product.png"
    ]
  }'

Response

string

Task ID for status queries.

string

Returned when provided in the request.

string

Fixed to generation.task.

string

The model used for this request.

string

queued, in_progress, completed, or failed.

integer

Task progress from 0 to 100.

integer

Creation timestamp.

{
  "id": "tsk_vid_xxx",
  "object": "generation.task",
  "model": "seedance-2-ext",
  "status": "in_progress",
  "progress": 10,
  "created_at": 1781577600
}

Overview

Quick Start

Model Catalog

Chat API

Image API

Video API

Music API

Task Management

File Uploads

Account

FAQs

seedance-2-ext Video Generation

Authentication

Body

Media Combination Rules

Request Examples

Text-to-Video

Reference Image

Response

​Authentication

​Body

​Media Combination Rules

​Request Examples

​Text-to-Video

​Reference Image

​Response

Authentication

Body

Media Combination Rules

Request Examples

Text-to-Video

Reference Image

Response