https://askubuntu.com/questions/164227/how-to-mount-an-iso-file explains two methods to mount an ISO in your file system. Once that's done, then you can launch the video with the excellent VLC app https://www.videolan.org/vlc/index.html
– K7AAYSep 18 '19 at 15:49
iso
as a disk. – Pilot6 Sep 18 '19 at 13:25