DVDStyler is the way to go. Use the beta version.
http://www.dvdstyler.org/en/downloads
DVD Flick can author but is miserable at chapters or thumbnails that link to multiple videos. DVDStyler is easy and just works. They fixed something in beta. The stable release didn't encode.
Omarchy Stuff
On the Try Omarchy VM for Windows https://tryomarchy.com/ Set scaling to 1 instead of 2 on 1080p nano ~/.config/hypr/monitors.lua hyprctl...
