My main office computer is a Linux Mint 21.1. The primary video player program is named Cinema and I’ve used it for many years. Lately, it fails to respond when I try to play a video. As far as I know it is the default video program for the computer. No error messages appear on the screen, it just sits there. I can open the video with other video programs like Dragon Player or HBud. I’ve removed it and reinstalled through the Application Manager to no avail.