can someone please tell me After ripping a dvd under 4.7g with dvd decrypter how do i burn it back to a dvdr ?
thanks

Copy all files to a "VIDEO_TS" folder and you might want to make a blank "AUDIO_TS" for compatibility Issues, then burn it back to a DVDR with your favorite burning app.

I’ve copy all to a VIDEO_TS folder and burned with "nero dvd rom iso"
But it don’t work in my dvd player or my pc dvd drive it says “no mpeg files found” what Am I doing wrong?

You need to burn it as a DVD video, or UDF/ISO. Do NOT use the wizard.