free video converter

Hello, friends. Hopefully, you are well and good. This is my first post here and for a reason. Guys, I'm looking for the best YouTube video converter for my personal requirements. Although I found some suggestions (here), I don't know if these are the best r not. Have you any other suggestions...

Introduction;) You have a portable video player and would like to watch your home video using it? You want to enjoy your favorite movie with you iPhone/iPad/iPod or your Smartphone? Or you have to create a DVD for your home DVD player? Or you would like to convert a home video DVD to some other...