Veo 3.1 Lite Video Extension
curl --request POST \
--url https://api.highwayapi.ai/v3/async/veo-3.1-lite-extend \
--header 'Authorization: <authorization>' \
--header 'Content-Type: <content-type>' \
--data '
{
"seed": 123,
"video": "<string>",
"prompt": "<string>",
"resolution": "<string>",
"aspect_ratio": "<string>",
"sample_count": 123,
"enhance_prompt": true,
"generate_audio": true,
"negative_prompt": "<string>",
"person_generation": "<string>"
}
'import requests
url = "https://api.highwayapi.ai/v3/async/veo-3.1-lite-extend"
payload = {
"seed": 123,
"video": "<string>",
"prompt": "<string>",
"resolution": "<string>",
"aspect_ratio": "<string>",
"sample_count": 123,
"enhance_prompt": True,
"generate_audio": True,
"negative_prompt": "<string>",
"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,
video: '<string>',
prompt: '<string>',
resolution: '<string>',
aspect_ratio: '<string>',
sample_count: 123,
enhance_prompt: true,
generate_audio: true,
negative_prompt: '<string>',
person_generation: '<string>'
})
};
fetch('https://api.highwayapi.ai/v3/async/veo-3.1-lite-extend', 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-lite-extend",
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,
'video' => '<string>',
'prompt' => '<string>',
'resolution' => '<string>',
'aspect_ratio' => '<string>',
'sample_count' => 123,
'enhance_prompt' => true,
'generate_audio' => true,
'negative_prompt' => '<string>',
'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-lite-extend"
payload := strings.NewReader("{\n \"seed\": 123,\n \"video\": \"<string>\",\n \"prompt\": \"<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 \"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-lite-extend")
.header("Content-Type", "<content-type>")
.header("Authorization", "<authorization>")
.body("{\n \"seed\": 123,\n \"video\": \"<string>\",\n \"prompt\": \"<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 \"person_generation\": \"<string>\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.highwayapi.ai/v3/async/veo-3.1-lite-extend")
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 \"video\": \"<string>\",\n \"prompt\": \"<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 \"person_generation\": \"<string>\"\n}"
response = http.request(request)
puts response.read_body{
"task_id": "<string>"
}Video
Veo 3.1 Lite Video Extension
POST
/
v3
/
async
/
veo-3.1-lite-extend
Veo 3.1 Lite Video Extension
curl --request POST \
--url https://api.highwayapi.ai/v3/async/veo-3.1-lite-extend \
--header 'Authorization: <authorization>' \
--header 'Content-Type: <content-type>' \
--data '
{
"seed": 123,
"video": "<string>",
"prompt": "<string>",
"resolution": "<string>",
"aspect_ratio": "<string>",
"sample_count": 123,
"enhance_prompt": true,
"generate_audio": true,
"negative_prompt": "<string>",
"person_generation": "<string>"
}
'import requests
url = "https://api.highwayapi.ai/v3/async/veo-3.1-lite-extend"
payload = {
"seed": 123,
"video": "<string>",
"prompt": "<string>",
"resolution": "<string>",
"aspect_ratio": "<string>",
"sample_count": 123,
"enhance_prompt": True,
"generate_audio": True,
"negative_prompt": "<string>",
"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,
video: '<string>',
prompt: '<string>',
resolution: '<string>',
aspect_ratio: '<string>',
sample_count: 123,
enhance_prompt: true,
generate_audio: true,
negative_prompt: '<string>',
person_generation: '<string>'
})
};
fetch('https://api.highwayapi.ai/v3/async/veo-3.1-lite-extend', 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-lite-extend",
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,
'video' => '<string>',
'prompt' => '<string>',
'resolution' => '<string>',
'aspect_ratio' => '<string>',
'sample_count' => 123,
'enhance_prompt' => true,
'generate_audio' => true,
'negative_prompt' => '<string>',
'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-lite-extend"
payload := strings.NewReader("{\n \"seed\": 123,\n \"video\": \"<string>\",\n \"prompt\": \"<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 \"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-lite-extend")
.header("Content-Type", "<content-type>")
.header("Authorization", "<authorization>")
.body("{\n \"seed\": 123,\n \"video\": \"<string>\",\n \"prompt\": \"<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 \"person_generation\": \"<string>\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.highwayapi.ai/v3/async/veo-3.1-lite-extend")
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 \"video\": \"<string>\",\n \"prompt\": \"<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 \"person_generation\": \"<string>\"\n}"
response = http.request(request)
puts response.read_body{
"task_id": "<string>"
}Video extension API based on the Google Veo 3.1 Lite model, supporting content extension generation for input videos.
This is an asynchronous API and only returns the asynchronous task’s task_id. You should use this task_id to request the Get Task Result API to retrieve the generated result.
Request Headers
string
required
Enum value:
application/jsonstring
required
Bearer authentication format: Bearer {{API Key}}.
Request Body
integer
Random seed for generating reproducible resultsValue range: [0, 4294967295]
string
required
URL address of the input video, supporting formats such as mp4/mov/mpeg/avi
string
required
Text prompt describing the content of the extended video (English only)
string
default:"720p"
Output video resolutionOptional values:
720p, 1080pstring
default:"16:9"
Output video aspect ratioOptional values:
16:9, 9:16integer
default:1
Number of videos to generateValue range: [1, 4]
boolean
default:true
Whether to automatically optimize the prompt
boolean
default:false
Whether to generate an audio track
string
Negative prompt, describing content to avoid
string
default:"allow_adult"
Safety control for person generationOptional values:
dont_allow, allow_adultResponse Information
string
Use the task_id to request the Get Task Result API to retrieve the generated output.
⌘I