20.04 Issue Playing Videos

Hi,

I have problem playing videos on Ubuntu 20.4. I upgraded from version 16 to 20 directly.

I tried to reinstall Flash, adobe and did all software updates. Still no luck. I can't play including youtube. Please help.

raj@raj-VirtualBox:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.1 LTS
Release: 20.04
Codename: focal