Veo 3.1 首尾帧视频生成

POST /v3/async/veo-3.1-generate-firstlastframe

Veo 3.1 首尾帧视频生成

cURL

curl --request POST \
  --url https://api.highwayapi.ai/v3/async/veo-3.1-generate-firstlastframe \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: <content-type>' \
  --data '
{
  "seed": 123,
  "image": "<string>",
  "prompt": "<string>",
  "last_image": "<string>",
  "resolution": "<string>",
  "aspect_ratio": "<string>",
  "sample_count": 123,
  "enhance_prompt": true,
  "generate_audio": true,
  "negative_prompt": "<string>",
  "duration_seconds": 123,
  "person_generation": "<string>"
}
'

import requests

url = "https://api.highwayapi.ai/v3/async/veo-3.1-generate-firstlastframe"

payload = {
    "seed": 123,
    "image": "<string>",
    "prompt": "<string>",
    "last_image": "<string>",
    "resolution": "<string>",
    "aspect_ratio": "<string>",
    "sample_count": 123,
    "enhance_prompt": True,
    "generate_audio": True,
    "negative_prompt": "<string>",
    "duration_seconds": 123,
    "person_generation": "<string>"
}
headers = {
    "Content-Type": "<content-type>",
    "Authorization": "<authorization>"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': '<content-type>', Authorization: '<authorization>'},
  body: JSON.stringify({
    seed: 123,
    image: '<string>',
    prompt: '<string>',
    last_image: '<string>',
    resolution: '<string>',
    aspect_ratio: '<string>',
    sample_count: 123,
    enhance_prompt: true,
    generate_audio: true,
    negative_prompt: '<string>',
    duration_seconds: 123,
    person_generation: '<string>'
  })
};

fetch('https://api.highwayapi.ai/v3/async/veo-3.1-generate-firstlastframe', 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.highwayapi.ai/v3/async/veo-3.1-generate-firstlastframe",
  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([
    'seed' => 123,
    'image' => '<string>',
    'prompt' => '<string>',
    'last_image' => '<string>',
    'resolution' => '<string>',
    'aspect_ratio' => '<string>',
    'sample_count' => 123,
    'enhance_prompt' => true,
    'generate_audio' => true,
    'negative_prompt' => '<string>',
    'duration_seconds' => 123,
    'person_generation' => '<string>'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <authorization>",
    "Content-Type: <content-type>"
  ],
]);

$response = curl_exec($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.highwayapi.ai/v3/async/veo-3.1-generate-firstlastframe"

	payload := strings.NewReader("{\n  \"seed\": 123,\n  \"image\": \"<string>\",\n  \"prompt\": \"<string>\",\n  \"last_image\": \"<string>\",\n  \"resolution\": \"<string>\",\n  \"aspect_ratio\": \"<string>\",\n  \"sample_count\": 123,\n  \"enhance_prompt\": true,\n  \"generate_audio\": true,\n  \"negative_prompt\": \"<string>\",\n  \"duration_seconds\": 123,\n  \"person_generation\": \"<string>\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "<content-type>")
	req.Header.Add("Authorization", "<authorization>")

	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.highwayapi.ai/v3/async/veo-3.1-generate-firstlastframe")
  .header("Content-Type", "<content-type>")
  .header("Authorization", "<authorization>")
  .body("{\n  \"seed\": 123,\n  \"image\": \"<string>\",\n  \"prompt\": \"<string>\",\n  \"last_image\": \"<string>\",\n  \"resolution\": \"<string>\",\n  \"aspect_ratio\": \"<string>\",\n  \"sample_count\": 123,\n  \"enhance_prompt\": true,\n  \"generate_audio\": true,\n  \"negative_prompt\": \"<string>\",\n  \"duration_seconds\": 123,\n  \"person_generation\": \"<string>\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.highwayapi.ai/v3/async/veo-3.1-generate-firstlastframe")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Content-Type"] = '<content-type>'
request["Authorization"] = '<authorization>'
request.body = "{\n  \"seed\": 123,\n  \"image\": \"<string>\",\n  \"prompt\": \"<string>\",\n  \"last_image\": \"<string>\",\n  \"resolution\": \"<string>\",\n  \"aspect_ratio\": \"<string>\",\n  \"sample_count\": 123,\n  \"enhance_prompt\": true,\n  \"generate_audio\": true,\n  \"negative_prompt\": \"<string>\",\n  \"duration_seconds\": 123,\n  \"person_generation\": \"<string>\"\n}"

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

200

{
  "task_id": "<string>"
}

使用 Google Veo 3.1 模型，根据提供的首帧和尾帧图片生成过渡视频。支持4/6/8秒时长，720p和1080p分辨率，可选音频生成。

这是一个异步API，只会返回异步任务的 task_id。您应该使用该 task_id 请求 查询任务结果 API 来检索生成结果。

​

请求头

Content-Type · string · 必填

枚举值: application/json

Authorization · string · 必填

Bearer 身份验证格式: Bearer {{API 密钥}}。

​

请求体

seed · integer

随机种子，用于复现生成结果。

取值范围：[0, 4294967295]

image · string · 必填

首帧图片，支持图片URL或Base64编码数据。格式要求：JPEG或PNG，最大20MB。

prompt · string · 必填

描述首帧到尾帧之间视频过渡内容的文本提示词。

last_image · string · 必填

尾帧图片，支持图片URL或Base64编码数据。格式要求：JPEG或PNG，最大20MB。

resolution · string · 默认值: "720p"

输出视频分辨率。

可选值：720p, 1080p

aspect_ratio · string · 默认值: "16:9"

输出视频宽高比。

可选值：16:9, 9:16

sample_count · integer · 默认值: 1

生成视频样本数量（1-4）。

取值范围：[1, 4]

enhance_prompt · boolean · 默认值: true

是否使用 Gemini 增强提示词。Veo 3.x 上此功能无法禁用。

generate_audio · boolean · 默认值: false

是否同时生成音频。

negative_prompt · string

描述需要在生成视频中避免的内容。

duration_seconds · integer · 默认值: 8

生成视频时长（秒），支持4、6、8秒。

可选值：4, 6, 8

person_generation · string · 默认值: "allow_adult"

是否允许生成人物。allow_adult：允许生成成人；dont_allow：不允许生成人物；allow_all：允许所有人物。

可选值：allow_adult, dont_allow, allow_all

​

响应信息

task_id · string

使用 task_id 请求 查询任务结果 API 来检索生成的输出。