The easiest way to install it is search for HandBrake in Software.
The top one is Flatpak and the second one is Snap installer.
But if you are like me and others on this forum, installing from the terminal is a preferable method. Because of the sandboxing nature of Snap and Flatpak, you may encounter a problem such as inability to access external disks or mounted volumes. It is a deal breaker for me, since I keep all multimedia files in an external large capacity SSD.
To install HandBrake properly, open terminal (ctrl + alt + T)
- Add repository for HandBrake:
sudo add-apt-repository ppa:stebbins/handbrake-releases
- Update package list in your system:
sudo apt update
- Install HandBrake and possible dependencies:
sudo apt install --install-recommends handbrake-gtk