Hi there, I would like to share a easy to use online tool.
The Best <a href=https://keepvid.ch/en/youtube-to-mp4>YouTube to mp4</a> converter.

Support all web browsers to Download YouTube to MP3 & MP4
MP3 is mainly for audio files, whereas MP4 is for multiple digital files. If you want to listen to music only, a tool that converts YouTube to MP3 is your choice. If you have enough space on your devices, you can download YouTube videos in MP4 format so that you can enjoy both music and videos. No matter which one you need, this tool is a good choice. You can download videos here and convert YouTube to MP3 to only enjoy the audio. This free online solution to YouTube download can assist you to download YouTube to MP3 and MP4. How to download from YouTube? Just give this tool a try.