happyhorse-1.0-i2v

Submit an image-to-video generation task using a single first-frame image. Returns a task_id immediately. Poll GET /v1/video/generations/{task_id} for the result.

POST /v1/video/generations

Create Image-to-Video Task

cURL

curl --request POST \
  --url https://www.anyfast.ai/v1/video/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "happyhorse-1.0-i2v",
  "prompt": "Camera slowly zooms in, the scene comes to life",
  "image": "https://example.com/first-frame.png",
  "resolution": "720P",
  "ratio": "16:9",
  "duration": 5,
  "watermark": false,
  "seed": 1073741823,
  "parameters": {}
}
'

import requests

url = "https://www.anyfast.ai/v1/video/generations"

payload = {
    "model": "happyhorse-1.0-i2v",
    "prompt": "Camera slowly zooms in, the scene comes to life",
    "image": "https://example.com/first-frame.png",
    "resolution": "720P",
    "ratio": "16:9",
    "duration": 5,
    "watermark": False,
    "seed": 1073741823,
    "parameters": {}
}
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: 'happyhorse-1.0-i2v',
    prompt: 'Camera slowly zooms in, the scene comes to life',
    image: 'https://example.com/first-frame.png',
    resolution: '720P',
    ratio: '16:9',
    duration: 5,
    watermark: false,
    seed: 1073741823,
    parameters: {}
  })
};

fetch('https://www.anyfast.ai/v1/video/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://www.anyfast.ai/v1/video/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' => 'happyhorse-1.0-i2v',
    'prompt' => 'Camera slowly zooms in, the scene comes to life',
    'image' => 'https://example.com/first-frame.png',
    'resolution' => '720P',
    'ratio' => '16:9',
    'duration' => 5,
    'watermark' => false,
    'seed' => 1073741823,
    'parameters' => [
        
    ]
  ]),
  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://www.anyfast.ai/v1/video/generations"

	payload := strings.NewReader("{\n  \"model\": \"happyhorse-1.0-i2v\",\n  \"prompt\": \"Camera slowly zooms in, the scene comes to life\",\n  \"image\": \"https://example.com/first-frame.png\",\n  \"resolution\": \"720P\",\n  \"ratio\": \"16:9\",\n  \"duration\": 5,\n  \"watermark\": false,\n  \"seed\": 1073741823,\n  \"parameters\": {}\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://www.anyfast.ai/v1/video/generations")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"model\": \"happyhorse-1.0-i2v\",\n  \"prompt\": \"Camera slowly zooms in, the scene comes to life\",\n  \"image\": \"https://example.com/first-frame.png\",\n  \"resolution\": \"720P\",\n  \"ratio\": \"16:9\",\n  \"duration\": 5,\n  \"watermark\": false,\n  \"seed\": 1073741823,\n  \"parameters\": {}\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://www.anyfast.ai/v1/video/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\": \"happyhorse-1.0-i2v\",\n  \"prompt\": \"Camera slowly zooms in, the scene comes to life\",\n  \"image\": \"https://example.com/first-frame.png\",\n  \"resolution\": \"720P\",\n  \"ratio\": \"16:9\",\n  \"duration\": 5,\n  \"watermark\": false,\n  \"seed\": 1073741823,\n  \"parameters\": {}\n}"

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

200

{
  "id": "asyntask_jwgfhsG0m2aDjLmiiELRf74eoWmss6ya",
  "task_id": "asyntask_jwgfhsG0m2aDjLmiiELRf74eoWmss6ya",
  "object": "video",
  "model": "happyhorse-1.0-i2v",
  "status": "queued",
  "progress": 0,
  "created_at": 1777343862
}

Authorizations

Authorization · string · header · required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Body

application/json

model · enum<string> · required

Model ID.

Available options: happyhorse-1.0-i2v

Example:

"happyhorse-1.0-i2v"

prompt · string · required

Text description of the desired motion.

Example:

"Camera slowly zooms in, the scene comes to life"

image · string · required

First-frame image URL. Use images: [...] array form if you prefer — only the first item is used.

Example:

"https://example.com/first-frame.png"

resolution · enum<string> · default: 1080P

Video resolution.

Available options: 720P, 1080P

Example:

"720P"

ratio · enum<string> · default: 16:9

Aspect ratio.

Available options: 16:9, 9:16, 1:1, 4:3, 3:4

Example:

"16:9"

duration · integer · default: 5

Video duration in seconds.

Required range: 3 <= x <= 15

Example:

5

watermark · boolean · default: true

Whether to add the bottom-right "Happy Horse" watermark.

Example:

false

seed · integer

Random seed for reproducibility.

Required range: 0 <= x <= 2147483647

parameters · object

Optional alternative location for the same parameters (DashScope-native style).

Response

200

application/json

Task created successfully

id · string

Example:

"asyntask_jwgfhsG0m2aDjLmiiELRf74eoWmss6ya"

task_id · string

Example:

"asyntask_jwgfhsG0m2aDjLmiiELRf74eoWmss6ya"

object · string

Example:

"video"

model · string

Example:

"happyhorse-1.0-i2v"

status · string

Example:

"queued"

progress · integer

Example:

0

created_at · integer

Example:

1777343862