SMPlayer is a free media player for Windows and Linux with built-in codecs, which can also play Youtube videos, search and download subtitles, and includes other features like a thumbnail generator and audio and video filters.
You can find here packages for Windows and Linux:
The MPlayer binaries for Windows have been provided by redxii. More info at http://mplayerwin.sourceforge.net
sudo add-apt-repository ppa:rvm/smplayer sudo apt-get update sudo apt-get install smplayer smplayer-themes smplayer-skins
(Packages built with Qt 4)
(Packages built with Qt 5)