I have the same problem with discs ejecting very quickly yet reporting the process is complete but no output file.
The how-to-repair link doesn't show me content relevant to my OS which is Ventura 13.6 running on an M1 MabookPro.
midlandmaverick
go to common settings - drives - read - click "do not eject source disc when task finishes"
to stop dvdfab from ejecting the disc early. so you need to push the eject button on your dvd drive.