www.makemkv.com

I sent a dump file for 1917 UHD. While I wait, i did my first "encrypted disk backup". Once the key is available to decrypt it, how do I make a MKV from this backup folder?

Just do a file, open, and select your folder backup. From there you can create the MKV.

Thanks I figured it out finally. You have to select the bmvd index or whatever it was called