I have installed Ubuntu 15.04 on my machine. When I tried to play a video it asked me to install one plugin (Plugin - MPEG-1 Layer 2 (MP2) decoder). Can anyone help me get this plugin installed?
You can install all codecs, Microsoft fonts and flash in one command
sudo apt-get install ubuntu-restricted-extras
If you want to install just that codec, run
sudo apt-get install libmpeg2-4