www.makemkv.com

Thanks guys. I already searched the forums and that's how I came to using the hashed keys method. I'll try sending an email to svq@makemkv.com directly.

I'm having trouble opening the 4K version of "The Greatest Showman". I get the following error "The volume key is unknown for this disc - video can't be decrypted". I followed the instructions for adding the hashed keys located here: https://www.makemkv.com/forum/viewtopic.php?f=...