# 字幕

通过提供以下内容，您可以获取 YouTube 字幕和隐藏字幕（CC） **YouTube 视频 ID** 以及一个 `language_code` 给 `youtube_subtitles` source.

{% hint style="warning" %}
字幕（隐藏字幕）与转录文本是分开的。要提取标准转录文本，请使用 [YouTube Transcript](/api-targets/cn/shi-pin-yu-she-jiao-mei-ti/youtube/youtube-transcript.md) source.
{% endhint %}

## 请求样本

以下示例演示了如何从一个由上传者提供字幕的 YouTube 视频中检索英文隐藏字幕。

{% tabs %}
{% tab title="cURL" %}

```shell
curl 'https://realtime.oxylabs.io/v1/queries' \\
--user 'USERNAME:PASSWORD' \\
-H 'Content-Type: application/json' \\
-d '{
        "source": "youtube_subtitles",
        "query": "c4P_YuNnZ7U",
        "context": [
            {
                "key": "language_code",
                "value": "en"
            },
            {
                "key": "subtitle_origin",
                "value": "uploader_provided"
            }
        ]
    }'
```

{% endtab %}

{% tab title="Python" %}

```python
import requests
from pprint import pprint

# 结构化负载。
payload = {
    'source': 'youtube_subtitles',
    'query': 'c4P_YuNnZ7U',
    'context': [
        {
            'key': 'language_code',
            'value': 'en'
        },
        {
            'key': 'subtitle_origin',
            'value': 'uploader_provided'
        }
    ]
}

# 获取响应。
response = requests.request(
    'POST',
    'https://realtime.oxylabs.io/v1/queries',
    auth=('username', 'password'),
    json=payload,
)

# 打印带有结果的 JSON 响应。
pprint(response.json())
```

{% endtab %}

{% tab title="Node.js" %}

```javascript
const https = require("https");

const username = "USERNAME";
const password = "PASSWORD";
const body = {
    source: "youtube_subtitles",
    query: "c4P_YuNnZ7U",
    context: [
        {
            key: "language_code",
            value: "en",
        },
        {
            key: "subtitle_origin",
            value: "uploader_provided",
        },
    ],
};

const options = {
    hostname: "realtime.oxylabs.io",
    path: "/v1/queries",
    method: "POST",
    headers: {
        "Content-Type": "application/json",
        Authorization:
            "Basic " + Buffer.from(`${username}:${password}`).toString("base64"),
    },
};

const request = https.request(options, (response) => {
    let data = "";

    response.on("data", (chunk) => {
        data += chunk;
    });

    response.on("end", () => {
        const responseData = JSON.parse(data);
        console.log(JSON.stringify(responseData, null, 2));
    });
});

request.on("error", (error) => {
    console.error("错误：", error);
});

request.write(JSON.stringify(body));
request.end();
```

{% endtab %}

{% tab title="HTTP" %}

```http
# 你提交的整个字符串必须进行 URL 编码。

https://realtime.oxylabs.io/v1/queries?source=youtube_subtitles&query=c4P_YuNnZ7U&context=%5B%7B%22key%22%3A%22language_code%22%2C%22value%22%3A%22en%22%7D%2C%7B%22key%22%3A%22subtitle_origin%22%2C%22value%22%3A%22uploader_provided%22%7D%5D&access_token=12345abcde
```

{% endtab %}

{% tab title="PHP" %}

```php
<?php

$params = array(
    'source' => 'youtube_subtitles',
    'query' => 'c4P_YuNnZ7U',
    'context' => array(
        array(
            'key' => 'language_code',
            'value' => 'en'
        ),
        array(
            'key' => 'subtitle_origin',
            'value' => 'uploader_provided'
        )
    )
);

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, "https://realtime.oxylabs.io/v1/queries");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($params));
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_USERPWD, "USERNAME" . ":" . "PASSWORD");

$headers = array();
$headers[] = "Content-Type: application/json";
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$result = curl_exec($ch);
echo $result;

if (curl_errno($ch)) {
    echo '错误:' . curl_error($ch);
}

curl_close($ch);
```

{% endtab %}

{% tab title="Golang" %}

```go
package main

import (
	"bytes"
	"encoding/json"
	"fmt"
	"io/ioutil"
	"net/http"
)

func main() {
	const Username = "USERNAME"
	const Password = "PASSWORD"

	// 使用 query 和 context 参数定义载荷。
	payload := map[string]interface{} {
		"source": "youtube_subtitles",
		"query":  "c4P_YuNnZ7U",
		"context": []map[string]string{
			{
				"key":   "language_code",
				"value": "en",
			},
			{
				"key":   "subtitle_origin",
				"value": "uploader_provided",
			},
		},
	}

	jsonValue, err := json.Marshal(payload)
	if err != nil {
		fmt.Println("JSON 编组出错：", err)
		return
	}

	client := &http.Client{}
	request, err := http.NewRequest("POST", "https://realtime.oxylabs.io/v1/queries", bytes.NewBuffer(jsonValue))
	if err != nil {
		fmt.Println("创建请求出错：", err)
		return
	}

	request.SetBasicAuth(Username, Password)
	request.Header.Set("Content-Type", "application/json")

	response, err := client.Do(request)
	if err != nil {
		fmt.Println("发送请求出错：", err)
		return
	}
	defer response.Body.Close()

	responseText, err := ioutil.ReadAll(response.Body)
	if err != nil {
		fmt.Println("读取响应出错：", err)
		return
	}

	fmt.Println(string(responseText))
}
```

{% endtab %}

{% tab title="C#" %}

```csharp
using System;
using System.Collections.Generic;
using System.Net.Http;
using System.Net.Http.Json;
using System.Text;
using System.Threading.Tasks;

namespace OxyApi
{
    class Program
    {
        static async Task Main()
        {
            const string Username = "USERNAME";
            const string Password = "PASSWORD";

            var parameters = new
            {
                source = "youtube_subtitles",
                query = "c4P_YuNnZ7U",
                context = new[]
                {
                    new { key = "language_code", value = "en" },
                    new { key = "subtitle_origin", value = "uploader_provided" }
                }
            };

            var client = new HttpClient();

            Uri baseUri = new Uri("https://realtime.oxylabs.io");
            client.BaseAddress = baseUri;

            var requestMessage = new HttpRequestMessage(HttpMethod.Post, "/v1/queries");
            requestMessage.Content = JsonContent.Create(parameters);

            var authenticationString = $"{Username}:{Password}";
            var base64EncodedAuthenticationString = Convert.ToBase64String(Encoding.UTF8.GetBytes(authenticationString));
            requestMessage.Headers.Add("Authorization", "Basic " + base64EncodedAuthenticationString);

            try
            {
                var response = await client.SendAsync(requestMessage);
                response.EnsureSuccessStatusCode();

                var contents = await response.Content.ReadAsStringAsync();
                Console.WriteLine(contents);
            }
            catch (HttpRequestException e)
            {
                Console.WriteLine($"请求错误：{e.Message}");
            }
        }
    }
}
```

{% endtab %}

{% tab title="Java" %}

```java
package org.example;

import okhttp3.*;
import org.json.JSONArray;
import org.json.JSONObject;
import java.util.concurrent.TimeUnit;

public class Main implements Runnable {
    private static final String AUTHORIZATION_HEADER = "Authorization";
    public static final String USERNAME = "USERNAME";
    public static final String PASSWORD = "PASSWORD";

    public void run() {
        // 使用 context 参数构建 JSON 载荷
        JSONObject jsonObject = new JSONObject();
        jsonObject.put("source", "youtube_subtitles");
        jsonObject.put("query", "c4P_YuNnZ7U");

        JSONArray contextArray = new JSONArray();
        contextArray.put(new JSONObject().put("key", "language_code").put("value", "en"));
        contextArray.put(new JSONObject().put("key", "subtitle_origin").put("value", "uploader_provided"));

        jsonObject.put("context", contextArray);

        Authenticator authenticator = (route, response) -> {
            String credential = Credentials.basic(USERNAME, PASSWORD);
            return response
                    .request()
                    .newBuilder()
                    .header(AUTHORIZATION_HEADER, credential)
                    .build();
        };

        var client = new OkHttpClient.Builder()
                .authenticator(authenticator)
                .readTimeout(180, TimeUnit.SECONDS)
                .build();

        var mediaType = MediaType.parse("application/json; charset=utf-8");
        var body = RequestBody.create(jsonObject.toString(), mediaType);
        var request = new Request.Builder()
                .url("https://realtime.oxylabs.io/v1/queries")
                .post(body)
                .build();

        try (var response = client.newCall(request).execute()) {
            if (response.body() != null) {
                try (var responseBody = response.body()) {
                    System.out.println(responseBody.string());
                }
            }
        } catch (Exception exception) {
            System.out.println("错误： " + exception.getMessage());
        }

        System.exit(0);
    }

    public static void main(String[] args) {
        new Thread(new Main()).start();
    }
}
```

{% endtab %}

{% tab title="JSON" %}

```json
{
    "source": "youtube_subtitles",
    "query": "c4P_YuNnZ7U",
    "context": [
        {
            "key": "language_code",
            "value": "en"
        },
        {
            "key": "subtitle_origin",
            "value": "uploader_provided"
        }
    ]
}
```

{% endtab %}
{% endtabs %}

我们在示例中使用同步 [**Realtime**](/products/cn/web-scraper-api/integration-methods/realtime.md) 集成方法。如果您想使用 [**Proxy Endpoint**](/products/cn/web-scraper-api/integration-methods/proxy-endpoint.md) 或异步 [**Push-Pull**](/products/cn/web-scraper-api/integration-methods/push-pull.md) 集成，请参阅 [**集成方法**](/products/cn/web-scraper-api/integration-methods.md) 部分。

{% file src="/files/3cf61f95fc58f5be8d138d1c0ec33b47f7f14e96" %}

## 请求参数值

### 通用

<table><thead><tr><th width="227">参数</th><th width="289.3333333333333">描述</th><th>默认值</th></tr></thead><tbody><tr><td><mark style="background-color:green;"><strong><code>source</code></strong></mark></td><td>设置爬虫。</td><td><code>youtube_subtitles</code></td></tr><tr><td><mark style="background-color:green;"><strong><code>query</code></strong></mark></td><td>YouTube 视频 ID。</td><td>–</td></tr><tr><td><strong>context:</strong><br><mark style="background-color:green;"><strong><code>language_code</code></strong></mark></td><td>指定字幕的语言。查找可用值 <a href="https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FzrXw45naRpCZ0Ku9AjY1%2Fuploads%2FpKzuNdn6pgiePWHADWVQ%2Flanguages.json?alt=media&#x26;token=bb8d9eac-8268-4f28-bd2b-6a084c4862ea"><strong>这里</strong></a>.<br><strong>注意</strong>：如果提供的 <code>language_code</code> 在 YouTube 视频中没有匹配的字幕 / 隐藏字幕时，结果将返回一个 <code>404</code> 状态。</td><td>–</td></tr><tr><td><code>context:</code><br><code>subtitle_origin</code></td><td>指定是否检索以下字幕： <code>auto_generated</code> 或 <code>uploader_provided</code>.</td><td>–</td></tr><tr><td><code>callback_url</code></td><td>回调端点的 URL。 <a href="/spaces/ZwEHB9k4MH4pDy80n9mF/pages/f93fe40aed5366f8033cd2ebfae30e61c16a4f51"><strong>更多信息</strong></a></td><td>–</td></tr></tbody></table>

&#x20;    – 必填参数


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://developers.oxylabs.io/api-targets/cn/shi-pin-yu-she-jiao-mei-ti/youtube/youtube-subtitles.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.