VLC Media Player
The VLC Media Player is definitely a utility you need when you handle many video formats. It’s highly versatile and can handle almost any format under many operating systems. You can read about the media player from this location: http://www.videolan.org/vlc/.
The many features, formats, filters etc are also described in a table highlighting all you can do under each operating system ranging from MacOS to BEOS, Linux to Windows etc. Take a look from here: http://www.videolan.org/vlc/features.html.
Good luck using this media player. 🙂