Mac OS X ships with QuickTime X, a powerful media player that most people will find fits their needs pretty well. However, there is an abundance of media players, managers and encoders available on the Mac App Store if you want a taste of something different.
MPlayerX is a multi-format, multi-touch, multi-monitor multimedia player. MPlayerX plugs it’s application as a powerful media player that fuses the power of ffmpeg and mplayer, allowing for faster decoding of almost any file format. And clearly, MPlayerX was heavily inspired by Apple’s moves both in software and technology.