> ## Documentation Index
> Fetch the complete documentation index at: https://docs.aireiter.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Seedance 2.0 Video Generation

> - Asynchronous processing mode, returns a task ID for subsequent queries
- Supports text-to-video and image-to-video (first frame, last frame, multiple reference images)
- Supports multiple aspect ratios including horizontal and vertical
- Supports audio generation


export const apiKeyUrl = 'https://aireiter.com/keys';

<Note>
  This endpoint supports two model variants with identical parameters:

  * `seedance2` — Standard version
  * `seedance2_face` — Supports uploading real person version, functionality is consistent with the standard version
</Note>

## Authorizations

<ParamField header="Authorization" type="string" required>
  All endpoints require authentication using a Bearer Token

  Get the API Key:

  Visit the <a href={apiKeyUrl} target="_blank">API Key management page</a> to obtain your API Key

  Include in the request headers:

  ```
  Authorization: Bearer YOUR_API_KEY
  ```
</ParamField>

## Body

<ParamField body="model" type="string" required>
  Model Name

  Supports the following model variants (parameters are exactly the same, choose as needed):

  * `seedance2` — Standard version
  * `seedance2_face` — Supports uploading real human version, functionality is consistent with the standard version
</ParamField>

<ParamField body="params" type="object" required>
  Model parameters object

  <Expandable title="params Object Properties">
    <ParamField body="prompt" type="string" required>
      Text description for video generation, cannot be empty
    </ParamField>

    <ParamField body="type" type="string" required>
      Reference mode, determines how image/video parameters are used

      * `all_reference` — Intelligent reference mode: `image_url` used as character/style reference images (up to 9), `video_url` used as reference videos (up to 3)
      * `first_last_frame` — First and last frame mode: `image_url` as first frame (only 1), `end_image_url` as last frame, `video_url` not supported

      Required, optional values: `all_reference`, `first_last_frame`
    </ParamField>

    <ParamField body="image_url" type="string[]">
      Reference image URLs

      * In `all_reference` mode: up to 9 images, max 50MB each, minimum side length 300px
      * In `first_last_frame` mode: only 1 image (first frame), max 10MB, minimum side length 300px
    </ParamField>

    <ParamField body="video_url" type="string[]">
      Reference video URLs

      Only supported in `all_reference` mode. Up to 3; supports `mp4`, `mov`; single video duration 2-15 seconds, total length of all reference videos no more than 15 seconds; max 50MB per video; frame rate 24-60 FPS; resolutions supported are `480p`, `720p`; aspect ratio 0.4-2.5; width and height range 300-6000px; total pixels between 409600 and 927408

      <Warning>Only valid in `all_reference` mode, do not pass this parameter when `type` is `first_last_frame`</Warning>
    </ParamField>

    <ParamField body="end_image_url" type="string">
      Last frame image URL

      Max 10MB

      <Note>Only valid in `first_last_frame` mode</Note>
    </ParamField>

    <ParamField body="aspect_ratio" type="string" default="16:9">
      Video aspect ratio

      Supported aspect ratios:

      * `16:9` - Landscape (default)
      * `9:16` - Portrait
      * `1:1` - Square
      * `4:3` - Standard
      * `3:4` - Portrait standard
      * `21:9` - Ultra-wide
    </ParamField>

    <ParamField body="resolution" type="string" default="720p">
      Video resolution

      Supported resolutions:

      * `480p`
      * `720p` (default)
      * `1080p`
    </ParamField>

    <ParamField body="video_length" type="string" default="5">
      Video length (seconds)

      Supported length range: 4 to 15 seconds, default 5 seconds
    </ParamField>

    <ParamField body="generate_audio" type="boolean" default="true">
      Whether to generate audio, default `true`
    </ParamField>
  </Expandable>
</ParamField>

<ParamField body="out_task_id" type="string" required>
  Initiator task ID

  User-defined task identifier, required
</ParamField>

## Response

<ResponseField name="out_task_id" type="string">
  The initiator task ID, which can be used to query the results
</ResponseField>

<ResponseField name="status" type="string">
  Initial status, fixed as `"pending"`
</ResponseField>

<ResponseField name="estimated_credits" type="number">
  Estimated consumed credits
</ResponseField>

<ResponseField name="created_at" type="string">
  Creation time (ISO format)
</ResponseField>

<RequestExample>
  ```bash cURL (all_reference mode) theme={null}
  curl --request POST \
    --url https://aireiter.com/api/openapi/submit \
    --header 'Authorization: Bearer <token>' \
    --header 'Content-Type: application/json' \
    --data '{
      "model": "seedance2",
      "params": {
        "prompt": "A person dancing in a studio",
        "type": "all_reference",
        "image_url": ["https://example.com/character.jpg"],
        "video_url": ["https://example.com/dance.mp4"],
        "aspect_ratio": "16:9",
        "resolution": "720p",
        "video_length": "5",
        "generate_audio": true
      },
      "out_task_id": "my_task_123456"
    }'
  ```

  ```bash cURL (first_last_frame mode) theme={null}
  curl --request POST \
    --url https://aireiter.com/api/openapi/submit \
    --header 'Authorization: Bearer <token>' \
    --header 'Content-Type: application/json' \
    --data '{
      "model": "seedance2",
      "params": {
        "prompt": "Transition from sunrise to sunset",
        "type": "first_last_frame",
        "image_url": ["https://example.com/start.jpg"],
        "end_image_url": "https://example.com/end.jpg",
        "aspect_ratio": "16:9",
        "resolution": "720p",
        "video_length": "5"
      },
      "out_task_id": "my_task_123457"
    }'
  ```

  ```python Python theme={null}
  import requests

  url = "https://aireiter.com/api/openapi/submit"

  payload = {
      "model": "seedance2",
      "params": {
          "prompt": "A person dancing in a studio",
          "type": "all_reference",
          "image_url": ["https://example.com/character.jpg"],
          "aspect_ratio": "16:9",
          "resolution": "720p",
          "video_length": "5",
          "generate_audio": True
      },
      "out_task_id": "my_task_123456"
  }

  headers = {
      "Authorization": "Bearer <token>",
      "Content-Type": "application/json"
  }

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

  print(response.json())
  ```

  ```javascript JavaScript theme={null}
  const url = "https://aireiter.com/api/openapi/submit";

  const payload = {
    model: "seedance2",
    params: {
      prompt: "A person dancing in a studio",
      type: "all_reference",
      image_url: ["https://example.com/character.jpg"],
      aspect_ratio: "16:9",
      resolution: "720p",
      video_length: "5",
      generate_audio: true
    },
    out_task_id: "my_task_123456"
  };

  const headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
  };

  fetch(url, {
    method: "POST",
    headers: headers,
    body: JSON.stringify(payload)
  })
    .then(response => response.json())
    .then(data => console.log(data))
    .catch(error => console.error('Error:', error));
  ```

  ```go Go theme={null}
  package main

  import (
      "bytes"
      "encoding/json"
      "fmt"
      "io/ioutil"
      "net/http"
  )

  func main() {
      url := "https://aireiter.com/api/openapi/submit"

      payload := map[string]interface{}{
          "model": "seedance2",
          "params": map[string]interface{}{
              "prompt":         "A person dancing in a studio",
              "type":           "all_reference",
              "image_url":      []string{"https://example.com/character.jpg"},
              "aspect_ratio":   "16:9",
              "resolution":     "720p",
              "video_length":   "5",
              "generate_audio": true,
          },
          "out_task_id": "my_task_123456",
      }

      jsonData, _ := json.Marshal(payload)

      req, _ := http.NewRequest("POST", url, bytes.NewBuffer(jsonData))
      req.Header.Set("Authorization", "Bearer <token>")
      req.Header.Set("Content-Type", "application/json")

      client := &http.Client{}
      resp, err := client.Do(req)
      if err != nil {
          panic(err)
      }
      defer resp.Body.Close()

      body, _ := ioutil.ReadAll(resp.Body)
      fmt.Println(string(body))
  }
  ```

  ```java Java theme={null}
  import java.io.BufferedReader;
  import java.io.InputStreamReader;
  import java.io.OutputStream;
  import java.net.HttpURLConnection;
  import java.net.URL;

  public class Main {
      public static void main(String[] args) {
          try {
              URL url = new URL("https://aireiter.com/api/openapi/submit");
              HttpURLConnection conn = (HttpURLConnection) url.openConnection();
              conn.setRequestMethod("POST");
              conn.setRequestProperty("Authorization", "Bearer <token>");
              conn.setRequestProperty("Content-Type", "application/json");
              conn.setDoOutput(true);

              String jsonPayload = "{\"model\":\"seedance2\",\"params\":{\"prompt\":\"A person dancing in a studio\",\"type\":\"all_reference\",\"image_url\":[\"https://example.com/character.jpg\"],\"aspect_ratio\":\"16:9\",\"resolution\":\"720p\",\"video_length\":\"5\",\"generate_audio\":true},\"out_task_id\":\"my_task_123456\"}";

              OutputStream os = conn.getOutputStream();
              os.write(jsonPayload.getBytes());
              os.flush();
              os.close();

              BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
              String line;
              StringBuilder response = new StringBuilder();
              while ((line = br.readLine()) != null) {
                  response.append(line);
              }
              br.close();

              System.out.println(response.toString());
          } catch (Exception e) {
              e.printStackTrace();
          }
      }
  }
  ```

  ```php PHP theme={null}
  <?php
  $url = "https://aireiter.com/api/openapi/submit";

  $payload = array(
      "model" => "seedance2",
      "params" => array(
          "prompt" => "A person dancing in a studio",
          "type" => "all_reference",
          "image_url" => array("https://example.com/character.jpg"),
          "aspect_ratio" => "16:9",
          "resolution" => "720p",
          "video_length" => "5",
          "generate_audio" => true
      ),
      "out_task_id" => "my_task_123456"
  );

  $ch = curl_init($url);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  curl_setopt($ch, CURLOPT_POST, true);
  curl_setopt($ch, CURLOPT_HTTPHEADER, array(
      "Authorization: Bearer <token>",
      "Content-Type: application/json"
  ));
  curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($payload));

  $response = curl_exec($ch);
  curl_close($ch);

  echo $response;
  ?>
  ```

  ```ruby Ruby theme={null}
  require 'net/http'
  require 'json'
  require 'uri'

  url = URI.parse("https://aireiter.com/api/openapi/submit")

  payload = {
    model: "seedance2",
    params: {
      prompt: "A person dancing in a studio",
      type: "all_reference",
      image_url: ["https://example.com/character.jpg"],
      aspect_ratio: "16:9",
      resolution: "720p",
      video_length: "5",
      generate_audio: true
    },
    out_task_id: "my_task_123456"
  }

  http = Net::HTTP.new(url.host, url.port)
  http.use_ssl = true
  request = Net::HTTP::Post.new(url.path)
  request["Authorization"] = "Bearer <token>"
  request["Content-Type"] = "application/json"
  request.body = payload.to_json

  response = http.request(request)
  puts response.body
  ```

  ```swift Swift theme={null}
  import Foundation

  let url = URL(string: "https://aireiter.com/api/openapi/submit")!
  var request = URLRequest(url: url)
  request.httpMethod = "POST"
  request.setValue("Bearer <token>", forHTTPHeaderField: "Authorization")
  request.setValue("application/json", forHTTPHeaderField: "Content-Type")

  let payload: [String: Any] = [
      "model": "seedance2",
      "params": [
          "prompt": "A person dancing in a studio",
          "type": "all_reference",
          "image_url": ["https://example.com/character.jpg"],
          "aspect_ratio": "16:9",
          "resolution": "720p",
          "video_length": "5",
          "generate_audio": true
      ],
      "out_task_id": "my_task_123456"
  ]

  request.httpBody = try? JSONSerialization.data(withJSONObject: payload)

  let task = URLSession.shared.dataTask(with: request) { data, response, error in
      if let data = data {
          print(String(data: data, encoding: .utf8) ?? "")
      }
  }
  task.resume()
  ```

  ```csharp C# theme={null}
  using System;
  using System.Net.Http;
  using System.Text;
  using System.Threading.Tasks;

  class Program
  {
      static async Task Main(string[] args)
      {
          var url = "https://aireiter.com/api/openapi/submit";
          var payload = "{\"model\":\"seedance2\",\"params\":{\"prompt\":\"A person dancing in a studio\",\"type\":\"all_reference\",\"image_url\":[\"https://example.com/character.jpg\"],\"aspect_ratio\":\"16:9\",\"resolution\":\"720p\",\"video_length\":\"5\",\"generate_audio\":true},\"out_task_id\":\"my_task_123456\"}";

          using (var client = new HttpClient())
          {
              client.DefaultRequestHeaders.Add("Authorization", "Bearer <token>");
              var content = new StringContent(payload, Encoding.UTF8, "application/json");
              var response = await client.PostAsync(url, content);
              var result = await response.Content.ReadAsStringAsync();
              Console.WriteLine(result);
          }
      }
  }
  ```
</RequestExample>

<ResponseExample>
  ```json 200 theme={null}
  {
    "code": "200",
    "success": true,
    "data": {
        "out_task_id": "my_task_123456",
        "status": "pending",
        "estimated_credits": 82.5,
        "created_at": "2026-04-02T08:00:00.000Z"
    }
  }
  ```

  ```json 400 theme={null}
    {
        "statusCode": 400,
        "message": "Invalid request parameters",
        "ok": false
    }
  ```

  ```json 401 theme={null}
  {
    "error": {
      "code": 401,
      "message": "Authentication failed, please check your API key"
    }
  }
  ```

  ```json 433 theme={null}
    {
      "error": {
        "code": 433,
        "message": "Insufficient account balance, please recharge and try again"
      }
    }
  ```

  ```json 500 theme={null}
  {
    "error": {
      "code": 500,
      "message": "Internal server error, please try again later"
    }
  }
  ```
</ResponseExample>