I have tried 3 different disc since upgrading to Catalina. I insert a disc it spins for a few minutes then ejects the disc. My log is below and drive information.
Debug log started at Wed Oct 9 20:57:58 2019 , written by MakeMKV v1.14.5 darwin(x64-release)
Using 262272KB for read cache.
001005:0000 MakeMKV v1.14.5 darwin(x64-release) started
001004:0000 Debug logging enabled, log will be saved as /Users/chris/MakeMKV_log.txt
002010:0000 Optical drive "BD-RE ASUS BW-16D1HT 3.00d" opened in OS access mode.
SDF v060: ASUS_BW-16D1HT_3.00_211511031110_SIK96H1LG003
Drive Information
Manufacturer: ASUS
Product: BW-16D1HT
Revision: 3.00
Serial number: SIK96H1LG003
Firmware date: 2115-11-03 11:10
Bus encryption flags: 1F
Highest AACS version: 68
LibreDrive Information
Status: Enabled
Drive platform: MT1959
Firmware type: Original (unpatched)
Firmware version: 3.00
DVD all regions: Yes
BD raw data read: Yes
BD raw metadata read: Yes
Unrestricted read speed: Possible, not yet enabled
Disc Information
Disc is being loaded