www.makemkv.com

if you don't want all the intermediate data to be written to disk and have enough memory you can replace
--directio=true
by
--cache=2048

in my command line
"C:\Program Files (x86)\MakeMKV\makemkvcon64.exe" --minlength=300 --decrypt --directio=true mkv disc:0 all o:\DVDRIP\auto

so
"C:\Program ...

How I do it :

1)
To be able to eject a disk in Windows :
download wizmo and put in the target folder (here in o:\DVDRIP\auto)
https://www.grc.com/WIZMO/WIZMO.HTM
test the command
wizmo open
it should open the DVD tray

2)
check location of the program
"C:\Program Files (x86)\MakeMKV\makemkvcon64 ...