I forgot to check the block to install 3rd party software

[mahesh]

On installing Ubuntu 21.10 I did a clean install but I forgot to check the box to install 3rd party software. Now my movies won't play. I found the fix online but it no longer works.

https://askubuntu.com/questions/2902...pped-it-in-the

it says to run

sudo apt-get install ubuntu-restricted-extras

but when i run that it says

E: Unable to locate package ubuntu-restricted-extras

Please help.