Here is a README.md file for your yt-mp3-converter package:

# yt-mp3-converter

`yt-mp3-converter` is a simple and efficient Node.js package that allows you to convert YouTube videos to MP3 audio files. This package leverages `ytdl-core` for video downloading and `fluent-ffmpeg` for converting video files to MP3 format.

## Features

- Convert YouTube videos to MP3 format.
- Simple and easy-to-use API.
- Lightweight and fast.
- Generates an HTML download button for the converted MP3 file.

## Installation

You can install the package via npm:

```bash
npm install yt-mp3-converter

Usage

Importing the Package

First, import the necessary functions from the yt-mp3-converter package:

import { convertYouTubeToMp3, generateDownloadButton } from 'yt-mp3-converter';

Example

Here’s an example of how to use yt-mp3-converter to convert a YouTube video to MP3 and generate a download button:

import { convertYouTubeToMp3, generateDownloadButton } from 'yt-mp3-converter';

async function example() {
  const outputFilePath = './output.mp3';
  try {
    await convertYouTubeToMp3({
      videoUrl: 'https://www.youtube.com/watch?v=VIDEO_ID',
      outputFilePath
    });

    const downloadButtonHtml = generateDownloadButton(outputFilePath);
    console.log('Download Button HTML:', downloadButtonHtml);
  } catch (error) {
    console.error('Error converting video:', error);
  }
}

example();

API

convertYouTubeToMp3(options: ConvertOptions): Promise<string>

• Description: Downloads the audio from a YouTube video and converts it to MP3 format.
• Parameters:
  • options: An object containing the following properties:
    • videoUrl: The URL of the YouTube video.
    • outputFilePath: The path where the MP3 file should be saved.
• Returns: A promise that resolves to the file path of the converted MP3 file.

generateDownloadButton(filePath: string): string

• Description: Generates an HTML download button for the converted MP3 file.
• Parameters:
  • filePath: The path to the MP3 file.
• Returns: A string containing the HTML for the download button.

Prerequisites

• Node.js (version 12 or higher)
• FFmpeg must be installed and accessible in your system's PATH.

License

This package is licensed under the MIT License. See the LICENSE file for more information.

Disclaimer

Please ensure you comply with YouTube's Terms of Service when using this package. Converting and downloading YouTube videos may violate their policies if used improperly.

### How to Use This `README.md`

1. Save the `README.md` file in the root directory of your package.
2. Update any sections with additional details or changes specific to your implementation.
3. Ensure you have a `LICENSE` file if you reference a license in your `README.md`.
4. When you're ready, include this `README.md` when you publish the package to npm.