Seedance 2.0 Multimodal Video

curl --request POST \
  --url https://api.modelhunter.ai/api/v1/seedance/multimodal-video \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "<string>",
  "input": {
    "prompt": "<string>",
    "first_frame_url": "<string>",
    "last_frame_url": "<string>",
    "reference_image_urls": [
      "<string>"
    ],
    "reference_video_urls": [
      "<string>"
    ],
    "reference_audio_urls": [
      "<string>"
    ],
    "generate_audio": true,
    "resolution": "<string>",
    "aspect_ratio": "<string>",
    "duration": 123,
    "web_search": true,
    "nsfw_checker": true
  },
  "webhookUrl": "<string>",
  "metadata": {}
}
'

import requests

url = "https://api.modelhunter.ai/api/v1/seedance/multimodal-video"

payload = {
    "model": "<string>",
    "input": {
        "prompt": "<string>",
        "first_frame_url": "<string>",
        "last_frame_url": "<string>",
        "reference_image_urls": ["<string>"],
        "reference_video_urls": ["<string>"],
        "reference_audio_urls": ["<string>"],
        "generate_audio": True,
        "resolution": "<string>",
        "aspect_ratio": "<string>",
        "duration": 123,
        "web_search": True,
        "nsfw_checker": True
    },
    "webhookUrl": "<string>",
    "metadata": {}
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    model: '<string>',
    input: {
      prompt: '<string>',
      first_frame_url: '<string>',
      last_frame_url: '<string>',
      reference_image_urls: ['<string>'],
      reference_video_urls: ['<string>'],
      reference_audio_urls: ['<string>'],
      generate_audio: true,
      resolution: '<string>',
      aspect_ratio: '<string>',
      duration: 123,
      web_search: true,
      nsfw_checker: true
    },
    webhookUrl: '<string>',
    metadata: {}
  })
};

fetch('https://api.modelhunter.ai/api/v1/seedance/multimodal-video', 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://api.modelhunter.ai/api/v1/seedance/multimodal-video",
  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>',
    'input' => [
        'prompt' => '<string>',
        'first_frame_url' => '<string>',
        'last_frame_url' => '<string>',
        'reference_image_urls' => [
                '<string>'
        ],
        'reference_video_urls' => [
                '<string>'
        ],
        'reference_audio_urls' => [
                '<string>'
        ],
        'generate_audio' => true,
        'resolution' => '<string>',
        'aspect_ratio' => '<string>',
        'duration' => 123,
        'web_search' => true,
        'nsfw_checker' => true
    ],
    'webhookUrl' => '<string>',
    'metadata' => [
        
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "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://api.modelhunter.ai/api/v1/seedance/multimodal-video"

	payload := strings.NewReader("{\n  \"model\": \"<string>\",\n  \"input\": {\n    \"prompt\": \"<string>\",\n    \"first_frame_url\": \"<string>\",\n    \"last_frame_url\": \"<string>\",\n    \"reference_image_urls\": [\n      \"<string>\"\n    ],\n    \"reference_video_urls\": [\n      \"<string>\"\n    ],\n    \"reference_audio_urls\": [\n      \"<string>\"\n    ],\n    \"generate_audio\": true,\n    \"resolution\": \"<string>\",\n    \"aspect_ratio\": \"<string>\",\n    \"duration\": 123,\n    \"web_search\": true,\n    \"nsfw_checker\": true\n  },\n  \"webhookUrl\": \"<string>\",\n  \"metadata\": {}\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	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://api.modelhunter.ai/api/v1/seedance/multimodal-video")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"model\": \"<string>\",\n  \"input\": {\n    \"prompt\": \"<string>\",\n    \"first_frame_url\": \"<string>\",\n    \"last_frame_url\": \"<string>\",\n    \"reference_image_urls\": [\n      \"<string>\"\n    ],\n    \"reference_video_urls\": [\n      \"<string>\"\n    ],\n    \"reference_audio_urls\": [\n      \"<string>\"\n    ],\n    \"generate_audio\": true,\n    \"resolution\": \"<string>\",\n    \"aspect_ratio\": \"<string>\",\n    \"duration\": 123,\n    \"web_search\": true,\n    \"nsfw_checker\": true\n  },\n  \"webhookUrl\": \"<string>\",\n  \"metadata\": {}\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.modelhunter.ai/api/v1/seedance/multimodal-video")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"model\": \"<string>\",\n  \"input\": {\n    \"prompt\": \"<string>\",\n    \"first_frame_url\": \"<string>\",\n    \"last_frame_url\": \"<string>\",\n    \"reference_image_urls\": [\n      \"<string>\"\n    ],\n    \"reference_video_urls\": [\n      \"<string>\"\n    ],\n    \"reference_audio_urls\": [\n      \"<string>\"\n    ],\n    \"generate_audio\": true,\n    \"resolution\": \"<string>\",\n    \"aspect_ratio\": \"<string>\",\n    \"duration\": 123,\n    \"web_search\": true,\n    \"nsfw_checker\": true\n  },\n  \"webhookUrl\": \"<string>\",\n  \"metadata\": {}\n}"

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

{
  "success": true,
  "data": {
    "id": "task_abc123",
    "status": "pending",
    "type": "multimodal-video",
    "provider": "seedance",
    "model": "bytedance/seedance-2",
    "created_at": "2026-05-15T10:00:00Z",
    "estimated_seconds": 300
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "input.reference_audio_urls must be used with an image or video reference"
  }
}

POST

api

seedance

multimodal-video

Seedance 2.0 Multimodal Video

curl --request POST \
  --url https://api.modelhunter.ai/api/v1/seedance/multimodal-video \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "<string>",
  "input": {
    "prompt": "<string>",
    "first_frame_url": "<string>",
    "last_frame_url": "<string>",
    "reference_image_urls": [
      "<string>"
    ],
    "reference_video_urls": [
      "<string>"
    ],
    "reference_audio_urls": [
      "<string>"
    ],
    "generate_audio": true,
    "resolution": "<string>",
    "aspect_ratio": "<string>",
    "duration": 123,
    "web_search": true,
    "nsfw_checker": true
  },
  "webhookUrl": "<string>",
  "metadata": {}
}
'

import requests

url = "https://api.modelhunter.ai/api/v1/seedance/multimodal-video"

payload = {
    "model": "<string>",
    "input": {
        "prompt": "<string>",
        "first_frame_url": "<string>",
        "last_frame_url": "<string>",
        "reference_image_urls": ["<string>"],
        "reference_video_urls": ["<string>"],
        "reference_audio_urls": ["<string>"],
        "generate_audio": True,
        "resolution": "<string>",
        "aspect_ratio": "<string>",
        "duration": 123,
        "web_search": True,
        "nsfw_checker": True
    },
    "webhookUrl": "<string>",
    "metadata": {}
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    model: '<string>',
    input: {
      prompt: '<string>',
      first_frame_url: '<string>',
      last_frame_url: '<string>',
      reference_image_urls: ['<string>'],
      reference_video_urls: ['<string>'],
      reference_audio_urls: ['<string>'],
      generate_audio: true,
      resolution: '<string>',
      aspect_ratio: '<string>',
      duration: 123,
      web_search: true,
      nsfw_checker: true
    },
    webhookUrl: '<string>',
    metadata: {}
  })
};

fetch('https://api.modelhunter.ai/api/v1/seedance/multimodal-video', 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://api.modelhunter.ai/api/v1/seedance/multimodal-video",
  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>',
    'input' => [
        'prompt' => '<string>',
        'first_frame_url' => '<string>',
        'last_frame_url' => '<string>',
        'reference_image_urls' => [
                '<string>'
        ],
        'reference_video_urls' => [
                '<string>'
        ],
        'reference_audio_urls' => [
                '<string>'
        ],
        'generate_audio' => true,
        'resolution' => '<string>',
        'aspect_ratio' => '<string>',
        'duration' => 123,
        'web_search' => true,
        'nsfw_checker' => true
    ],
    'webhookUrl' => '<string>',
    'metadata' => [
        
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "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://api.modelhunter.ai/api/v1/seedance/multimodal-video"

	payload := strings.NewReader("{\n  \"model\": \"<string>\",\n  \"input\": {\n    \"prompt\": \"<string>\",\n    \"first_frame_url\": \"<string>\",\n    \"last_frame_url\": \"<string>\",\n    \"reference_image_urls\": [\n      \"<string>\"\n    ],\n    \"reference_video_urls\": [\n      \"<string>\"\n    ],\n    \"reference_audio_urls\": [\n      \"<string>\"\n    ],\n    \"generate_audio\": true,\n    \"resolution\": \"<string>\",\n    \"aspect_ratio\": \"<string>\",\n    \"duration\": 123,\n    \"web_search\": true,\n    \"nsfw_checker\": true\n  },\n  \"webhookUrl\": \"<string>\",\n  \"metadata\": {}\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	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://api.modelhunter.ai/api/v1/seedance/multimodal-video")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"model\": \"<string>\",\n  \"input\": {\n    \"prompt\": \"<string>\",\n    \"first_frame_url\": \"<string>\",\n    \"last_frame_url\": \"<string>\",\n    \"reference_image_urls\": [\n      \"<string>\"\n    ],\n    \"reference_video_urls\": [\n      \"<string>\"\n    ],\n    \"reference_audio_urls\": [\n      \"<string>\"\n    ],\n    \"generate_audio\": true,\n    \"resolution\": \"<string>\",\n    \"aspect_ratio\": \"<string>\",\n    \"duration\": 123,\n    \"web_search\": true,\n    \"nsfw_checker\": true\n  },\n  \"webhookUrl\": \"<string>\",\n  \"metadata\": {}\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.modelhunter.ai/api/v1/seedance/multimodal-video")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"model\": \"<string>\",\n  \"input\": {\n    \"prompt\": \"<string>\",\n    \"first_frame_url\": \"<string>\",\n    \"last_frame_url\": \"<string>\",\n    \"reference_image_urls\": [\n      \"<string>\"\n    ],\n    \"reference_video_urls\": [\n      \"<string>\"\n    ],\n    \"reference_audio_urls\": [\n      \"<string>\"\n    ],\n    \"generate_audio\": true,\n    \"resolution\": \"<string>\",\n    \"aspect_ratio\": \"<string>\",\n    \"duration\": 123,\n    \"web_search\": true,\n    \"nsfw_checker\": true\n  },\n  \"webhookUrl\": \"<string>\",\n  \"metadata\": {}\n}"

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

{
  "success": true,
  "data": {
    "id": "task_abc123",
    "status": "pending",
    "type": "multimodal-video",
    "provider": "seedance",
    "model": "bytedance/seedance-2",
    "created_at": "2026-05-15T10:00:00Z",
    "estimated_seconds": 300
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "input.reference_audio_urls must be used with an image or video reference"
  }
}

Body Parameters

string

required

Seedance 2.0 model to use:

bytedance/seedance-2

object

required

Input parameters for the generation.

Show properties

string

required

Text description of the video to generate. Maximum length: 5000 characters.

string

Optional first frame image URL. Must be a public HTTP(S) URL.

string

Optional last frame image URL. Must be a public HTTP(S) URL.

string[]

Optional image reference URLs. Provide 1 to 9 public HTTP(S) URLs.

string[]

Optional video reference URLs. Provide 1 to 3 public HTTP(S) URLs.Video-reference requests use the video-reference price tier and are billed on input plus output seconds.

string[]

Optional audio reference URLs. Provide 1 to 3 public HTTP(S) URLs. Supported audio files are MPEG, WAV, X-WAV, AAC, MP4, or OGG, max 15MB each.Audio references must be used with at least one visual reference: first_frame_url, last_frame_url, reference_image_urls, or reference_video_urls.

boolean

default:false

Whether to generate synchronized AI audio for the output video.

string

default:"720p"

Output resolution. Options: 480p, 720p, 1080p.

string

default:"16:9"

Output aspect ratio. Options: 16:9, 4:3, 1:1, 3:4, 9:16, 21:9.

number

default:5

Output duration in seconds. Must be an integer from 4 to 15.

boolean

default:false

Whether to use online search.

boolean

default:true

Whether to enable the NSFW checker.

string

URL to receive a webhook when the task completes.

object

Custom key-value metadata to attach to the task.

Pricing

Seedance 2.0 is billed per second by resolution:

Request type	480p	720p	1080p
No video reference	$0.095/sec	$0.205/sec	$0.51/sec
With video reference	$0.0575/sec	$0.125/sec	$0.31/sec

When reference_video_urls is provided, billing uses input plus output seconds. Image, first/last frame, and audio references without a video reference use the no-video-reference tier.

Example

curl -X POST https://api.modelhunter.ai/api/v1/seedance/multimodal-video \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "bytedance/seedance-2",
    "input": {
      "prompt": "A cinematic product reveal with smooth camera motion and realistic lighting",
      "first_frame_url": "https://cdn.example.com/first-frame.png",
      "reference_audio_urls": ["https://cdn.example.com/reference-audio.mp3"],
      "generate_audio": false,
      "resolution": "720p",
      "aspect_ratio": "16:9",
      "duration": 5
    },
    "metadata": {
      "project": "launch-video"
    }
  }'

{
  "success": true,
  "data": {
    "id": "task_abc123",
    "status": "pending",
    "type": "multimodal-video",
    "provider": "seedance",
    "model": "bytedance/seedance-2",
    "created_at": "2026-05-15T10:00:00Z",
    "estimated_seconds": 300
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "input.reference_audio_urls must be used with an image or video reference"
  }
}

Videos

Images

Audio

Tasks

Files

Billing API

Seedance 2.0 Multimodal Video

Body Parameters

Pricing

Example