ubuntu-restricted-extras package allows users to install ability to play popular non-free media formats, including DVD, MP3, Quicktime, and Windows Media formats. without this you would not be able to play videos inside the app.
For versions of Ubuntu between 14.04 LTS (Trusty Tahr) and 15.10 (Wily Werewolf), as well as Ubuntu flavours that don’t include snap by default, snap can be installed from the Ubuntu Software Centre by searching for snapd.
Alternatively, snapd can be installed from the command line:
sudo apt update
sudo apt install snapd
Either log out and back in again, or restart your system, to ensure snap’s paths are updated correctly.
Install Image2Pdf Converter
To install Image2Pdf Converter, simply use the following command: