SMPlayer is a graphical user interface (GUI) for the award-winning mplayer and also for mpv. But apart from providing access for the most common and useful options of mplayer and mpv, SMPlayer adds other interesting features like the possibility to play Youtube videos or search and download subtitles.
One of the main features is the ability to remember the state of a played file, so when you play it later it will be resumed at the same point and with the same settings.