YouTube Video Captions API (V1)

GET

API health status

Healthy Available Limited Mostly unavailable No data

Loading health status...

Get YouTube video Captions data through TIKHUB, including available caption tracks or formatted content in SRT, XML, JSON3, or plain text for transcription, localization, accessibility review, and content analysis.

Parameters

Name	In	Type	Required	Default	Description
token	query	string	Yes	-	Access token for this API service.
videoId	query	string	Yes	-	The unique identifier for a YouTube video.
languageCode	query	string	No	``	Caption language code, such as en, zh-Hans, or a.en. Leave it empty to retrieve available caption tracks.
format	query	string	No	srt	Caption output format. Available Values: - srt: SubRip caption format with timeline cues - xml: Original XML caption format - json3: YouTube original JSON caption structure - txt: Plain text without timeline cues

Code Samples

💡 Environment Note

Use https://api.justoneapi.com by default. Mainland China users can use http://47.117.133.51:30015 instead.

🐚 cURL

curl -X GET "https://api.justoneapi.com/api/youtube/get-video-captions/v1?token=YOUR_API_KEY&videoId=VALUE"

🤖 AI Prompt

I want to use the "Video Captions (V1)" API from Just One API.
Base URL: use https://api.justoneapi.com by default. Mainland China users can use http://47.117.133.51:30015 instead.
API Path: /api/youtube/get-video-captions/v1?token=YOUR_API_KEY&videoId=VALUE
API Endpoint: BASE_URL + /api/youtube/get-video-captions/v1?token=YOUR_API_KEY&videoId=VALUE
HTTP Method: GET
Authentication: Append the "token" query parameter to the URL.
OpenAPI Definition: https://docs.justoneapi.com/openapi/youtube/video-captions-v1-en.json

Parameters:
- token (query): Access token for this API service. (Required)
- videoId (query): The unique identifier for a YouTube video. (Required)
- languageCode (query): Caption language code, such as en, zh-Hans, or a.en. Leave it empty to retrieve available caption tracks.
- format (query): Caption output format.

Available Values:
- `srt`: SubRip caption format with timeline cues
- `xml`: Original XML caption format
- `json3`: YouTube original JSON caption structure
- `txt`: Plain text without timeline cues

Return format: JSON

Response Handling & Error Codes:
1. Business results should be determined by the "code" field in the response body (code 0 means success).
2. Timeout Recommendation: Set the request timeout to 120 seconds. If 120 seconds is too long for your use case, use at least 60 seconds, but a small number of requests may time out before receiving a result.
3. Business Code Reference:
   - 0: Success
   - 100: Invalid or Inactive Token
   - 301: Collection Failed. Please Retry.
   - 302: Rate Limit Exceeded
   - 303: Daily Quota Exceeded
   - 400: Invalid Parameters
   - 500: Internal Server Error
   - 600: Permission Denied
   - 601: Insufficient Balance

Please help me write a script in my preferred programming language to call this API and handle the response.

🐍 Python

import requests

BASE_URL = "https://api.justoneapi.com"  # Mainland China: "http://47.117.133.51:30015"

url = BASE_URL + "/api/youtube/get-video-captions/v1?token=YOUR_API_KEY&videoId=VALUE"
response = requests.get(url)
print(response.json())

🌐 JavaScript

const BASE_URL = "https://api.justoneapi.com"; // Mainland China: "http://47.117.133.51:30015"
const url = BASE_URL + "/api/youtube/get-video-captions/v1?token=YOUR_API_KEY&videoId=VALUE";

const response = await fetch(url, {
  method: "GET"
});
const data = await response.json();
console.log(data);

☕ Java

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class Main {
    public static void main(String[] args) throws Exception {
        final String BASE_URL = "https://api.justoneapi.com"; // Mainland China: "http://47.117.133.51:30015"
        final String url = BASE_URL + "/api/youtube/get-video-captions/v1?token=YOUR_API_KEY&videoId=VALUE";

        HttpClient client = HttpClient.newHttpClient();
        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create(url))
            .method("GET", HttpRequest.BodyPublishers.noBody())
            .build();

        HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
        System.out.println(response.body());
    }
}

🐹 Go

package main

import (
	"fmt"
	"io"
	"net/http"
)

const BASE_URL = "https://api.justoneapi.com" // Mainland China: "http://47.117.133.51:30015"

func main() {
	client := &http.Client{}
	url := BASE_URL + "/api/youtube/get-video-captions/v1?token=YOUR_API_KEY&videoId=VALUE"
	req, _ := http.NewRequest("GET", url, nil)
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

🐘 PHP

<?php
$BASE_URL = "https://api.justoneapi.com"; // Mainland China: "http://47.117.133.51:30015"
$url = $BASE_URL . "/api/youtube/get-video-captions/v1?token=YOUR_API_KEY&videoId=VALUE";

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "GET");
$response = curl_exec($ch);
curl_close($ch);
echo $response;

[OpenAPI Definition (JSON)]

Response Example

Loading the latest successful example...