dvdshell.dll is a DVDShell
belonging to DVD Region-Free - Watch and copy CSS encrypted DVDs from any region!
from Fengtao Software
Non-system processes like dvdshell.dll originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues.