After knowing the development for SPlayerX has been stopped for more than 1 year, I jump back to use MPlayerX. After all, SPlayerX is fork from MPlayerX, that time I purchased SPlayerX was because of the auto subtitles download feature. But now, seem a lot bugs on SPlayerX still has not fixed yet.
On MPlayerX, there are some hidden functions which does not show on the Preference. Such as the animated full screen features that used the Mac OS X Lion is quite annoying, to make it work like the old time, you need to use terminal to access it.
defaults write org.niltsh.MPlayerX OldFullScreenMethod YES
The full list of hidden features you can use, can be found at here