SuperDrive Recognizes DVD But Won't Play

Greetings, All:

I have the MacBookPro 2020, 13", M1 running Big Sur & an Apple SuperDrive. The SuperDrive with USB to USB-C connector reads & writes music CDs using Apple Music just fine. I wanted to play a DVD; the DVD is recognized by the DVD Player application. If I launch DVD player, open media, & play, I hear the disc inside SuperDrive but no video plays on the screen.

Any ideas for a fix much appreciated.