mpg_dlg.dll is a DLL file used by MPEG Encoder setting dialogs created by ULead Systems This process is still being reviewed. If you have some information about it feel free to send us an email at pl[at]uniblue[dot]net
Non-system processes like mpg_dlg.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.