www.makemkv.com

I am trying to rip It's Always Sunny in Philadelphia season 12 (just DVDs) and MakeMKV never stops trying to load. It just sits there with the spinning DVD icon. I have to terminate the app (upper right X button or kill from the process list). This happens with both DVDs (2 discs for the season).

Running on Win11. All other seasons of the show have ripped without incident.
I've tried MakeMKV v1.17.7 and 1.18.1. No luck.

Can anyone explain why this is happening?

Never mind. It ends up that I received DVD-Rom burned disks with the real DVD's video files on them. They are using CDFS instead of UDF.