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"
}
}
Seedance
Seedance 2.0 Multimodal Video
Generate controllable cinematic videos with Seedance 2.0 using text, optional image, video, and audio references.
POST
/
api
/
v1
/
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
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 |
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"
}
}
⌘I