Video Preview option is not showing any video, audio is OK

[firebreather100]

On my M1 iMac the video preview is not showing any video, only the audio is working. I have the latest version of DVDFab for the Mac as of today 12.0.6.7, I previously posted this via Feedback in the APP itself..under ID: 117481

[Mona]

Are you trying to preview a movie disc or a regular video file?