Extracting video clips from a dvd

i have made a dvd video with menu’s using nero vision express. i was wondering if there is a software whcih allows me 2 extract curtain video clips from my dvd i made using nero vision express. i wish to do this because i have lost the video clips i added into the dvd movie and i wish 2 retrieve them seperatly… any ideas??

hope you guys can help. thx again

please help :frowning: