Mabey a DVD decoder isn't installed
A DVD-ROM drive does not have the capability to burn DVDs, only read them. you can reference the article : ...
DVD stands for Digital Video Disc or Digital Versatile Disc.
If the DVD is Read-Only (If you bought or rented it with the movie already on it), then no, it can't be changed in any way by the computer
The DVD player might be old or broken, or the disk might have a strach or food stains.