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POST
/
v1
/
videos
/
generations
doubao-seedance-1.0-pro-fast API
curl --request POST \
  --url https://api.evolink.ai/v1/videos/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "doubao-seedance-1.0-pro-fast",
  "prompt": "A cat playing piano"
}
'
import requests

url = "https://api.evolink.ai/v1/videos/generations"

payload = {
"model": "doubao-seedance-1.0-pro-fast",
"prompt": "A cat playing piano"
}
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: 'doubao-seedance-1.0-pro-fast', prompt: 'A cat playing piano'})
};

fetch('https://api.evolink.ai/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://api.evolink.ai/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' => 'doubao-seedance-1.0-pro-fast',
'prompt' => 'A cat playing piano'
]),
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.evolink.ai/v1/videos/generations"

payload := strings.NewReader("{\n \"model\": \"doubao-seedance-1.0-pro-fast\",\n \"prompt\": \"A cat playing piano\"\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.evolink.ai/v1/videos/generations")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"model\": \"doubao-seedance-1.0-pro-fast\",\n \"prompt\": \"A cat playing piano\"\n}")
.asString();
require 'uri'
require 'net/http'

url = URI("https://api.evolink.ai/v1/videos/generations")

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\": \"doubao-seedance-1.0-pro-fast\",\n \"prompt\": \"A cat playing piano\"\n}"

response = http.request(request)
puts response.read_body
{
  "created": 1761313744,
  "id": "task-unified-1761313744-vux2jw0k",
  "model": "doubao-seedance-1.0-pro-fast",
  "object": "video.generation.task",
  "progress": 0,
  "status": "pending",
  "task_info": {
    "can_cancel": true,
    "estimated_time": 165,
    "video_duration": 8
  },
  "type": "video",
  "usage": {
    "billing_rule": "per_call",
    "credits_reserved": 8,
    "user_group": "default"
  }
}
{
"error": {
"code": "invalid_request",
"message": "Invalid request parameters",
"type": "invalid_request_error"
}
}
{
"error": {
"code": "unauthorized",
"message": "Invalid or expired token",
"type": "authentication_error"
}
}
{
"error": {
"code": "insufficient_quota",
"message": "Insufficient quota. Please top up your account.",
"type": "insufficient_quota"
}
}
{
"error": {
"code": "model_access_denied",
"message": "Token does not have access to model: doubao-seedance-1.0-pro-fast",
"type": "invalid_request_error"
}
}
{
"error": {
"code": "rate_limit_exceeded",
"message": "Too many requests, please try again later",
"type": "rate_limit_error"
}
}
{
"error": {
"code": "internal_error",
"message": "Internal server error",
"type": "api_error"
}
}

Authorizations

Authorization
string
header
required

##All APIs require Bearer Token authentication##

Get API Key:

Visit API Key Management Page to get your API Key

Add to request header:

Authorization: Bearer YOUR_API_KEY

Body

application/json
model
enum<string>
default:doubao-seedance-1.0-pro-fast
required

Video generation model name

Available options:
doubao-seedance-1.0-pro-fast
Example:

"doubao-seedance-1.0-pro-fast"

prompt
string
required

Prompt describing the video you want to generate, limited to 2000 tokens

Maximum string length: 2000
Example:

"A cat playing piano"

duration
integer

Specifies the duration of the generated video (in seconds), defaults to 5 seconds

Note:

  • Supports any integer value between 2 and 12 seconds
  • Billing for a single request is based on the duration value; longer durations result in higher costs
Required range: 2 <= x <= 12
quality
enum<string>

Video resolution, defaults to 1080p

Note:

  • 480p: Lower resolution, lower pricing
  • 720p: Standard definition, standard pricing
  • 1080p: High definition, higher pricing, this is the default value
Available options:
480p,
720p,
1080p
Example:

"1080p"

aspect_ratio
string

Video aspect ratio

Text-to-video mode:

  • Default value: 16:9
  • Supported values: 16:9 (landscape), 9:16 (portrait), 1:1 (square), 4:3, 3:4, 21:9 (ultra-wide)

Image-to-video mode (when using image_urls):

  • Default value: adaptive
  • Supported values: In addition to the above 6 ratios, also supports keep_ratio (keep original aspect ratio) and adaptive (adaptive)
Example:

"16:9"

image_urls
string<uri>[]

Reference image URL list for image-to-video functionality

Note:

  • Number of images supported per request: 1 image
  • Image size: Not exceeding 10MB
  • Supported file formats: .jpg, .jpeg, .png, .webp
  • Image URLs must be directly viewable by the server, or the URL should trigger a direct download when accessed (typically these URLs end with image extensions like .png, .jpg)
Maximum array length: 1
Example:
["https://example.com/image.jpg"]
callback_url
string<uri>

HTTPS callback URL after task completion

Callback timing:

  • Triggered when task is completed, failed, or cancelled
  • Sent after billing confirmation is completed

Security restrictions:

  • Only HTTPS protocol is supported
  • Callbacks to internal network IP addresses are prohibited (127.0.0.1, 10.x.x.x, 172.16-31.x.x, 192.168.x.x, etc.)
  • URL length must not exceed 2048 characters

Callback mechanism:

  • Timeout: 10 seconds
  • Maximum of 3 retries after failure (retries occur after 1/2/4 seconds following failure)
  • Callback response body format is consistent with task query API response format
  • Callback URL returning 2xx status code is considered successful; other status codes will trigger retries
Example:

"https://your-domain.com/webhooks/video-task-completed"

Response

Video generation task created successfully

created
integer

Task creation timestamp

Example:

1761313744

id
string

Task ID

Example:

"task-unified-1761313744-vux2jw0k"

model
string

Actual model name used

Example:

"doubao-seedance-1.0-pro-fast"

object
enum<string>

Specific type of the task

Available options:
video.generation.task
progress
integer

Task progress percentage (0-100)

Required range: 0 <= x <= 100
Example:

0

status
enum<string>

Task status

Available options:
pending,
processing,
completed,
failed
Example:

"pending"

task_info
object

Video task detailed information

type
enum<string>

Output type of the task

Available options:
text,
image,
audio,
video
Example:

"video"

usage
object

Usage and billing information