How to Install HandBrake on Slackware Gnu/Linux

Installing

2. 2. Installing Flatpak

   How to Setup Flatpak on Slackware Linux

   Flatpak Slackware Linux Installation Guide

   Flatpak Slackware Linux Setup

3. 3. Installing HandBrake

   Then to Install HandBrake Flatpak App on Slackware Linux.

   flatpak --user install https://flathub.org/repo/appstream/fr.handbrake.ghb.flatpakref
   

   The Flatpak App Setup do Not need the sudo Command because then it Runs confined into a Sandbox.
   However, you’ll be Prompted to Authenticate with your User’s Admin Pass.
   Then Confirm the proposed Setup with ‘Enter’ and Wait patiently until the App is Downloaded, Built and Installed.