How to see the mp4 files in ubuntu 16.04



I am using ubuntu 16.04 LTS, and I have mp4 files in the movies folder. The permissions are set to 755. But still can't see the mp4 files.


This is a common problem. Does it apply to you as well?


have you linked the movies folder to a library inside Plex?
how are those movies structured (folders?) and named?