Can't import MP4 video

I wanted to try out the Video Editing in Blender, but when I go to drag in a MP4 file or a MKV file either from file manager or just from opening within Blender itself, Blender won’t let me add it and gives me an error saying “File could not be loaded.” when trying to import it to the timeline.

I am using Blender 3.1.0 | c77597cd0e15 on Manjaro Linux. 5.15.28-1-MANJARO

Try sudo apt-get install vlc-plugin-libde265 in a terminal

If you read my post properly, the target system is Manjaro Linux, there is no apt-get there is only pacman and/or pamac.

This is going to yet turn into a dead-end discussion with no answers, which means future people who look up this issue are just going to run into this post in the future with no answers.