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.
SMPlayer is developed with the Qt toolkit, so it's multi-platform.