TL;DR I used PHP, MySQL and JS to build Viro, my personal project that allows users to share and stream videos.
The website was built using PHP, jQuery and mySQL. I'm having a lot of fun developing the site. A lot of it doesn't quite work yet, but this was mostly a learning experience for myself. The website is live, I have it a little hidden, this is the link: https://viro.tv/index1. You can fool around with it. All the CSS was custom coded by myself :)