playing restricted formats of music in ubuntu
 

I am using ubuntu 10.04,when I first installed gstreamer plugins that is bad,fluendo and other plugins,I saved them form cache of apt and from that day whenever I reinstall ubuntu ,I just go to folder and do dpkg -i *.deb and my laptop was playing mp3 to dat means everything.

but after this fresh reinstall I did the samething but still for every video files sometimes it need H.264 decode,sometimes MPEG decoder,after I have googled I have installed so many packages again and again but problem still persists. help me......

wouldn't it be

$sudo apt-get install ubuntu-restricted-extras ?