Having a video format opening problem?

I always wondering that there is any of the video software could open all the video format except for media player classic..but there is some of the major problem for the video software which could open many type of video format.
But with this type of video player..u could open it at anywhere at any of the computer just having the file inside your thumb drive.
How is it?nice right?have a look and try it on..no harm on your computer for trying the program that doesn't need to be install right?

VLC PLAYER:



download link for portable version:

http://portableapps.com/apps/music_video/vlc_portable


download link for full version:

http://www.brothersoft.com/vlc-media-player-220151.html