ubuntu-restricted-extras contains the codecs required for playing videos and other media.
It can be loaded by opening a terminal and typing:
sudo apt-get install ubuntu-restricted-extras
Firefox 89.0 64 bit won't run Facebook (and some other) videos
ubuntu-restricted-extras contains the codecs required for playing videos and other media.
It can be loaded by opening a terminal and typing:
sudo apt-get install ubuntu-restricted-extras