Sure, here's the README file with formatting using GitHub markdown syntax:

This script downloads videos from a list of YouTube video URLs in a file named video_urls.txt. The script uses the yt_dlp library to download the videos and convert them to MP4 format with H.264 video and AAC audio codecs.

To run this script, you need to have Python 3 installed on your system. You can download Python 3 from the official website at https://www.python.org/downloads/.

You also need to install the yt_dlp library, which is a fork of the popular youtube-dl library with improved features and bug fixes. You can install yt_dlp using pip, the Python package installer, by running the following command in your terminal or command prompt:

pip install yt-dlp

To use this script, you need to create a file named video_urls.txt in the same directory as the script. In this file, you can list the URLs of the YouTube videos you want to download, one URL per line.

Once you have created the video_urls.txt file and installed the yt_dlp library, you can run the script by opening a terminal or command prompt in the directory where the script and the video_urls.txt file are located, and running the following command:

python youtube_downloader.py

This will start the script, which will download each video in the video_urls.txt file and save it to a folder named downloads in the same directory as the script.

Note that the script downloads videos that are age-restricted and may require a YouTube account to access. If you have trouble downloading a video, make sure you are logged in to YouTube and have access to the video. Also, be aware of the legal and ethical considerations of downloading YouTube videos and respect the copyright and intellectual property rights of the content creators.

This script uses the yt_dlp library, which is maintained by the yt-dlp team.