Install H.264 Codec Ubuntu Linux.

Install H.264 Codec Ubuntu Linux.

Unable to Play the File
"MPEG-4 AAC decoder, H.264 (Constrained Baseline Profile) decoder are required to play the file, but are not installed".

 
sudo apt-get update

sudo apt install gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly libdvd-pkg

sudo apt install ubuntu-restricted-extras

Semoga Bermanfaat.