How to create YouTube converter mp4?

There are lots of ways are available for converting a video into mp4. But you have asked for the easiest so, I will tell what is the easiest and the fast way to convert youtube video to mp4.

There is a website called Yo Which is launched for downloading & converting videos in mp3, mp4, and several other formats from Youtube as well as Facebook, You can try that because I can bet that there no other way to convert a youtube video in mp4 as fast as it does.