Seedance 2.0 Fast V2V

curl --request POST \
  --url https://api.modellix.ai/api/v1/bytedance/seedance-2.0-fast-v2v \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "video_urls": [
    "<string>"
  ]
}
'

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({video_urls: ['<string>']})
};

fetch('https://api.modellix.ai/api/v1/bytedance/seedance-2.0-fast-v2v', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.modellix.ai/api/v1/bytedance/seedance-2.0-fast-v2v"

payload = { "video_urls": ["<string>"] }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

package main

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

func main() {

	url := "https://api.modellix.ai/api/v1/bytedance/seedance-2.0-fast-v2v"

	payload := strings.NewReader("{\n  \"video_urls\": [\n    \"<string>\"\n  ]\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.modellix.ai/api/v1/bytedance/seedance-2.0-fast-v2v")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"video_urls\": [\n    \"<string>\"\n  ]\n}")
  .asString();

const url = 'https://api.modellix.ai/api/v1/bytedance/seedance-2.0-fast-v2v';
const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({video_urls: ['<string>']})
};

fetch(url, options)
  .then(res => res.json())
  .then(json => console.log(json))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.modellix.ai/api/v1/bytedance/seedance-2.0-fast-v2v",
  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([
    'video_urls' => [
        '<string>'
    ]
  ]),
  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;
}

require 'uri'
require 'net/http'

url = URI("https://api.modellix.ai/api/v1/bytedance/seedance-2.0-fast-v2v")

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  \"video_urls\": [\n    \"<string>\"\n  ]\n}"

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

import Foundation

let parameters = ["video_urls": ["<string>"]] as [String : Any?]

let postData = try JSONSerialization.data(withJSONObject: parameters, options: [])

let url = URL(string: "https://api.modellix.ai/api/v1/bytedance/seedance-2.0-fast-v2v")!
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.timeoutInterval = 10
request.allHTTPHeaderFields = [
  "Authorization": "Bearer <token>",
  "Content-Type": "application/json"
]
request.httpBody = postData

let (data, _) = try await URLSession.shared.data(for: request)
print(String(decoding: data, as: UTF8.self))

$headers=@{}
$headers.Add("Authorization", "Bearer <token>")
$headers.Add("Content-Type", "application/json")
$response = Invoke-WebRequest -Uri 'https://api.modellix.ai/api/v1/bytedance/seedance-2.0-fast-v2v' -Method POST -Headers $headers -ContentType 'application/json' -Body '{
  "video_urls": [
    "<string>"
  ]
}'

{
  "code": 0,
  "message": "success",
  "data": {
    "status": "pending",
    "task_id": "task-abc123",
    "model_id": "model-123",
    "get_result": {
      "method": "GET",
      "url": "https://api.modellix.ai/api/v1/tasks/task-abc123"
    }
  }
}

Seedance 2.0 Fast V2V

[Core Function] Seedance 2.0 Fast V2V is a high-speed video-to-video generation model. [Strengths] It offers rapid video transformation capabilities based on the 2.0 architecture. [Best For] Highly recommended for: quick video restyling and fast iterations. [Limitations] Do NOT use this model when absolute maximum visual quality is required (use standard 2.0). [Routing] Use this when speed is the primary concern for video transformations.

POST

bytedance

seedance-2.0-fast-v2v

curl --request POST \
  --url https://api.modellix.ai/api/v1/bytedance/seedance-2.0-fast-v2v \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "video_urls": [
    "<string>"
  ]
}
'

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({video_urls: ['<string>']})
};

fetch('https://api.modellix.ai/api/v1/bytedance/seedance-2.0-fast-v2v', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.modellix.ai/api/v1/bytedance/seedance-2.0-fast-v2v"

payload = { "video_urls": ["<string>"] }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

package main

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

func main() {

	url := "https://api.modellix.ai/api/v1/bytedance/seedance-2.0-fast-v2v"

	payload := strings.NewReader("{\n  \"video_urls\": [\n    \"<string>\"\n  ]\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.modellix.ai/api/v1/bytedance/seedance-2.0-fast-v2v")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"video_urls\": [\n    \"<string>\"\n  ]\n}")
  .asString();

const url = 'https://api.modellix.ai/api/v1/bytedance/seedance-2.0-fast-v2v';
const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({video_urls: ['<string>']})
};

fetch(url, options)
  .then(res => res.json())
  .then(json => console.log(json))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.modellix.ai/api/v1/bytedance/seedance-2.0-fast-v2v",
  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([
    'video_urls' => [
        '<string>'
    ]
  ]),
  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;
}

require 'uri'
require 'net/http'

url = URI("https://api.modellix.ai/api/v1/bytedance/seedance-2.0-fast-v2v")

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  \"video_urls\": [\n    \"<string>\"\n  ]\n}"

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

import Foundation

let parameters = ["video_urls": ["<string>"]] as [String : Any?]

let postData = try JSONSerialization.data(withJSONObject: parameters, options: [])

let url = URL(string: "https://api.modellix.ai/api/v1/bytedance/seedance-2.0-fast-v2v")!
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.timeoutInterval = 10
request.allHTTPHeaderFields = [
  "Authorization": "Bearer <token>",
  "Content-Type": "application/json"
]
request.httpBody = postData

let (data, _) = try await URLSession.shared.data(for: request)
print(String(decoding: data, as: UTF8.self))

$headers=@{}
$headers.Add("Authorization", "Bearer <token>")
$headers.Add("Content-Type", "application/json")
$response = Invoke-WebRequest -Uri 'https://api.modellix.ai/api/v1/bytedance/seedance-2.0-fast-v2v' -Method POST -Headers $headers -ContentType 'application/json' -Body '{
  "video_urls": [
    "<string>"
  ]
}'

{
  "code": 0,
  "message": "success",
  "data": {
    "status": "pending",
    "task_id": "task-abc123",
    "model_id": "model-123",
    "get_result": {
      "method": "GET",
      "url": "https://api.modellix.ai/api/v1/tasks/task-abc123"
    }
  }
}

Authorizations

Authorization

string

header

required

API Key authentication. Format: Bearer YOUR_API_KEY.

Body

application/json

Seedance 2.0 Fast video-to-video request. Same input combinations as standard 2.0 V2V; resolution is limited to 480p/720p.

video_urls

string[]

required

Required. One to three reference video URLs.

Required array length: 1 - 3 elements

Video URL.

Minimum string length: 1

prompt

string

Optional. Video description. Maximum 10000 characters. Use [Image n], [Video n], and [Audio n] placeholders when referencing optional inputs. Recommended prompt length: under 1000 words.

Required string length: 1 - 10000

reference_images

string[]

Optional. Up to 9 reference image URLs for style or content guidance. Use [Image n] placeholders in prompt.

Required array length: 1 - 9 elements

Image URL or Base64 data.

Minimum string length: 1

audio_urls

string[]

Optional. Up to 3 reference audio URLs. Use [Audio n] placeholders in prompt.

Required array length: 1 - 3 elements

Audio URL.

Minimum string length: 1

ratio

enum<string>

default:adaptive

Aspect ratio of the generated video.

Available options:

16:9,

4:3,

1:1,

3:4,

9:16,

21:9,

adaptive

resolution

enum<string>

default:720p

Output resolution of the video.

Available options:

480p,

720p

duration

enum<integer>

default:5

Video duration in seconds (4-15 seconds).

Available options:

4,

5,

6,

7,

8,

9,

10,

11,

12,

13,

14,

15

seed

integer

default:-1

Random seed for reproducible generation. Use -1 for random.

Required range: -1 <= x <= 4294967295

camera_fixed

boolean

default:false

Whether to keep the camera fixed during generation.

generate_audio

boolean

default:true

Whether to generate audio.

execution_expires_after

integer

default:172800

Task expiration time in seconds.

Required range: 3600 <= x <= 259200

return_last_frame

boolean

default:false

Whether to return the last frame of the generated video.

Response

200 - application/json

Task submitted successfully

code

integer

required

Response code, 0 indicates success

Example:

0

message

string

required

Response message

Example:

"success"

data

object

required

Detailed data about the submitted asynchronous task.

Show child attributes

Media Models

Get Result

File

Else

STT Result Schema

Seedance 2.0 Fast V2V

Authorizations

Body

Response