where can i get h264 codec for vlc

while watching internet tv ,in the error messages i get a common line that says unknown codec h264 where can iget this?

The decoder in VLC is built-in and not accessible to Windows or Windows applications (WMP, Movie Maker, Media Center).
Try ffdshow-tryouts instead: http://ffdshow-tryout.sourceforge.net/

maybe your vlc is too old
new vlc has h264 built in.