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POST
/
v3
/
video-translations
/
proofreads
/
{proofread_id}
/
generate
Generate Video from Proofread
curl --request POST \
  --url https://api.heygen.com/v3/video-translations/proofreads/{proofread_id}/generate \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "captions": false,
  "translate_audio_only": false,
  "callback_id": "<string>",
  "callback_url": "<string>"
}
'
import requests

url = "https://api.heygen.com/v3/video-translations/proofreads/{proofread_id}/generate"

payload = {
    "captions": False,
    "translate_audio_only": False,
    "callback_id": "<string>",
    "callback_url": "<string>"
}
headers = {
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)
const options = {
  method: 'POST',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    captions: false,
    translate_audio_only: false,
    callback_id: '<string>',
    callback_url: '<string>'
  })
};

fetch('https://api.heygen.com/v3/video-translations/proofreads/{proofread_id}/generate', 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.heygen.com/v3/video-translations/proofreads/{proofread_id}/generate",
  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([
    'captions' => false,
    'translate_audio_only' => false,
    'callback_id' => '<string>',
    'callback_url' => '<string>'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-api-key: <api-key>"
  ],
]);

$response = curl_exec($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.heygen.com/v3/video-translations/proofreads/{proofread_id}/generate"

	payload := strings.NewReader("{\n  \"captions\": false,\n  \"translate_audio_only\": false,\n  \"callback_id\": \"<string>\",\n  \"callback_url\": \"<string>\"\n}")

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

	req.Header.Add("x-api-key", "<api-key>")
	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.heygen.com/v3/video-translations/proofreads/{proofread_id}/generate")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"captions\": false,\n  \"translate_audio_only\": false,\n  \"callback_id\": \"<string>\",\n  \"callback_url\": \"<string>\"\n}")
  .asString();
require 'uri'
require 'net/http'

url = URI("https://api.heygen.com/v3/video-translations/proofreads/{proofread_id}/generate")

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

request = Net::HTTP::Post.new(url)
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"captions\": false,\n  \"translate_audio_only\": false,\n  \"callback_id\": \"<string>\",\n  \"callback_url\": \"<string>\"\n}"

response = http.request(request)
puts response.read_body
{
  "data": {
    "video_translation_id": "<string>"
  }
}
{
  "error": {
    "code": "invalid_parameter",
    "message": "Video not found",
    "param": "<string>",
    "doc_url": "<string>"
  }
}
{
  "error": {
    "code": "authentication_failed",
    "message": "Invalid or expired API key. Verify your x-api-key header.",
    "param": null,
    "doc_url": null
  }
}
{
  "error": {
    "code": "not_found",
    "message": "Proofread not found.",
    "param": null,
    "doc_url": null
  }
}
{
  "error": {
    "code": "request_in_progress",
    "message": "A request with this Idempotency-Key is already in progress. Retry shortly.",
    "param": null,
    "doc_url": null
  }
}
{
  "error": {
    "code": "rate_limit_exceeded",
    "message": "Too many requests. Retry after the duration specified in the Retry-After header.",
    "param": null,
    "doc_url": null
  }
}

Authorizations

​
x-api-key
string
header
required

HeyGen API key. Obtain from your HeyGen dashboard.

Headers

​
Idempotency-Key
string

Optional client-supplied key for safely retrying mutations. Subsequent calls within 24 hours that share this key replay the original response — even if the request body differs slightly (a warning is logged). A retry that arrives while the original is still in flight gets a 409 request_in_progress. Keys must be 1–255 characters from [A-Za-z0-9_:.-]; a UUID is a safe default. Scope is per-endpoint and per-resource: the same key on a different route or path parameter is independent.

Required string length: 1 - 255
Pattern: ^[A-Za-z0-9_\-:.]{1,255}$

Path Parameters

​
proofread_id
string
required

Unique proofread identifier

Body

application/json

Request body for POST /v3/video-translations/proofreads/{id}/generate.

​
captions
boolean
default:false

Generate captions for the translated video

​
translate_audio_only
boolean
default:false

Only translate audio, keep original video

​
callback_id
string | null

ID included in webhook payload

​
callback_url
string | null

Webhook URL for completion notifications

Response

Successful response

​
data
GenerateVideoResponse · object

Response for POST /v3/video-translations/proofreads/{id}/generate.