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POST
/
v1
/
videos
/
generations
gemini-omni-flash-image-to-video API
curl --request POST \
  --url https://api.evolink.ai/v1/videos/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "gemini-omni-flash-image-to-video",
  "prompt": "Have the person in the image slowly turn their head and smile while the leaves in the background sway gently in the breeze",
  "image_urls": [
    "https://example.com/portrait.jpg"
  ],
  "aspect_ratio": "16:9",
  "duration": 10
}
'
import requests

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

payload = {
"model": "gemini-omni-flash-image-to-video",
"prompt": "Have the person in the image slowly turn their head and smile while the leaves in the background sway gently in the breeze",
"image_urls": ["https://example.com/portrait.jpg"],
"aspect_ratio": "16:9",
"duration": 10
}
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: 'gemini-omni-flash-image-to-video',
prompt: 'Have the person in the image slowly turn their head and smile while the leaves in the background sway gently in the breeze',
image_urls: ['https://example.com/portrait.jpg'],
aspect_ratio: '16:9',
duration: 10
})
};

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' => 'gemini-omni-flash-image-to-video',
'prompt' => 'Have the person in the image slowly turn their head and smile while the leaves in the background sway gently in the breeze',
'image_urls' => [
'https://example.com/portrait.jpg'
],
'aspect_ratio' => '16:9',
'duration' => 10
]),
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\": \"gemini-omni-flash-image-to-video\",\n \"prompt\": \"Have the person in the image slowly turn their head and smile while the leaves in the background sway gently in the breeze\",\n \"image_urls\": [\n \"https://example.com/portrait.jpg\"\n ],\n \"aspect_ratio\": \"16:9\",\n \"duration\": 10\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\": \"gemini-omni-flash-image-to-video\",\n \"prompt\": \"Have the person in the image slowly turn their head and smile while the leaves in the background sway gently in the breeze\",\n \"image_urls\": [\n \"https://example.com/portrait.jpg\"\n ],\n \"aspect_ratio\": \"16:9\",\n \"duration\": 10\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\": \"gemini-omni-flash-image-to-video\",\n \"prompt\": \"Have the person in the image slowly turn their head and smile while the leaves in the background sway gently in the breeze\",\n \"image_urls\": [\n \"https://example.com/portrait.jpg\"\n ],\n \"aspect_ratio\": \"16:9\",\n \"duration\": 10\n}"

response = http.request(request)
puts response.read_body
{
  "created": 1757169743,
  "id": "task-unified-1757169743-7cvnl5zw",
  "model": "gemini-omni-flash-image-to-video",
  "object": "video.generation.task",
  "progress": 0,
  "status": "pending",
  "task_info": {
    "can_cancel": false,
    "estimated_time": 60
  },
  "type": "video",
  "usage": {
    "billing_rule": "per_token",
    "credits_reserved": 102.34,
    "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: gemini-omni-flash-image-to-video",
"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 endpoints require authentication using a Bearer Token##

Get your API Key:

Visit the API Key management page to obtain your API Key

Add it to the request header:

Authorization: Bearer YOUR_API_KEY

Body

application/json
model
enum<string>
required

Model name, fixed to gemini-omni-flash-image-to-video

Available options:
gemini-omni-flash-image-to-video
Example:

"gemini-omni-flash-image-to-video"

prompt
string
required

Text prompt for video generation, supports both English and Chinese

Usage tips:

  • Describe the subject's actions, camera movement, mood changes, etc.; the more specific, the more stable the result
  • Write negative requirements directly into the prompt (e.g. No dialogue, no text on screen); this model does not provide a separate negative prompt parameter
Example:

"Have the person in the image slowly turn their head and smile while the leaves in the background sway gently in the breeze"

image_urls
string[]

Array of input images; currently only 1 is supported

Supported forms:

  • HTTP/HTTPS image URL
  • Data URL in the form data:image/...;base64,...
  • Plain base64 image string

Format requirements: png, jpeg, webp are supported

Required array length: 1 element
Example:
["https://example.com/portrait.jpg"]
duration
default:10

Video duration (seconds), default 10

Value notes:

  • Integer: range 3 ~ 10 seconds
  • auto: the model decides the output duration

Billing note: The actual charge is based on the usage of the generated video

Required range: 3 <= x <= 10
Example:

6

aspect_ratio
enum<string>
default:16:9

Video aspect ratio, default 16:9

Value notes:

  • 16:9: landscape
  • 9:16: portrait
  • auto: the model decides the aspect ratio
Available options:
16:9,
9:16,
auto
Example:

"16:9"

callback_url
string<uri>

HTTPS callback URL to notify when the task completes

Callback timing:

  • Triggered when the task completes (completed), fails (failed), or is cancelled (cancelled)
  • Sent after billing is confirmed

Security restrictions:

  • HTTPS protocol only
  • Callbacks to internal IP addresses are forbidden (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
  • Up to 3 retries on failure (retried 1s / 2s / 4s after each failure respectively)
  • The callback body format matches the response of the task query endpoint
  • A 2xx status code from the callback URL is treated as success; other status codes trigger a retry
Example:

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

Response

Video task created successfully

created
integer

Task creation timestamp

Example:

1757169743

id
string

Task ID

Example:

"task-unified-1757169743-7cvnl5zw"

model
string

The model name actually used

Example:

"gemini-omni-flash-image-to-video"

object
enum<string>

The 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

Detailed video task information

type
enum<string>

The output type of the task

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

"video"

usage
object

Usage and billing information