I've tried 2 times of copying it thru my computer which no such luck. I want to copy a 30-minute video that 12.0gb. In any case, the other 4.7, 2 hours length dvd-r or dvd+rw will not copy a large file of such stated above. So, what do I do? I have not had this problem before with other videos. I taped this 30-minute using my Dell Webcam. Can anyone help me? I need to have this video copied by Thursday for a class assignment.