> ## Documentation Index
> Fetch the complete documentation index at: https://nvd-54.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# YouTube transcripts 集成

> 使用 LangChain JavaScript 集成 YouTube transcripts document loader。

This covers how to load YouTube transcripts into LangChain documents.

## 设置

You'll need to install the [youtubei.js](https://www.npmjs.com/package/youtubei.js) to extract metadata:

```bash npm theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
npm install @langchain/community @langchain/core youtubei.js
```

## 用法

You need to specify a link to the video in the `url`. You can also specify `language` in [ISO 639-1](https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes) and `addVideoInfo` flag.

```typescript theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
import { YoutubeLoader } from "@langchain/community/document_loaders/web/youtube";

const loader = YoutubeLoader.createFromUrl("https://youtu.be/bZQun8Y4L2A", {
  language: "en",
  addVideoInfo: true,
});

const docs = await loader.load();

console.log(docs);
```

***

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