IT/Software/Applications/Media
Photos
Video
Making "Backups" of DVDs for playing from hard disk.
You need to install the css (Content Scrambling System)
Best done from the vlc pages.
https://www.videolan.org/developers/libdvdcss.html
sudo apt install libdvd-pkg
sudo dpkg-reconfigure libdvd-pkg
This can be very complicated. Below is a possible solution if you can't install the above packages
sudo apt install libc-bin/focal libc6/focal libc6-dbg/focal locales/focal
Be WARNED: This will uninstall all kinds of things and can be risky.
Cutting Videos
This can be done on the command line with ffmpeg
Easier to get the appimage of LosslessCut.
Audio
Our favorite is Audacity
In KDE the default audio manager is Pulse.