A capable and multifunctional media player, MplayerX for Mac features generous support online and ample tools available to the user, making it a very capable tool for watching videos.
At around 34MB in size, the application may take a couple of minutes to download. Though it installs painlessly, MplayerX for Mac does not include a splash page or tutorial for new users when it first opens, nor does it open a video window. It only appears in the status bar at the top. The best way to access it is to use the "open with" feature when clicking on a video file. Once it is running, it offers very diverse capabilities and is quite sleek. The video, itself, is the only thing showing while you are watching it, and the interface never shows up unless you need it. One aspect of the program we found inconvenient is that once a video has finished playing, the window disappears, where other players would remain open giving you the ability to re-watch instantly. Hot keys, enabling changes to the speed of the video and tools for adjusting audio feeds are among the useful tools this program packs. Additionally, by clicking on the A-B loop, the user can set the start and return points in the video enabling looping of the specified segment. However, even though the program claims to support streaming of YouTube videos, this feature didn't work correctly during testing on OS X Mountain Lion. When we tried opening a video from a URL, the program displayed an error on multiple occasions.
Ultimately, the casual user or social video watcher should probably stick to more "obvious" apps, but more advanced users who wish to enhance their video watching experience will appreciate MplayerX for Mac. Similar programs don't even come close to being as hefty in the tools department.