I'm using Keysockey Chrome extension for YouTube (and many other websites): https://github.com/borismus/keysocket https://github.com/borismus/keysocket (I use

I'm using Keysockey Chrome extension for YouTube (and many other websites): https://github.com/borismus/keysocket https://github.com/borismus/keysocket (I use Keysocket it every day. However, media key handling breaks when I have apps like VLC running at the same time on OS X. As far as I know, it's a Chrome bug, because it ignores SPMediaKeyTap, defacto standard library to handle media keys on OS X.)