If your goal was to ask the most vague and generalized question possible, you did it. We need to know a lot more before we can help. System specs/OS Make/model burner and firmware version. Brand/type media you're using. All software and methods you're using. Specific problems. That would be a good start
windows xp dvd buner hl-dt-st dvd-ram gsa-4040b and methods i'm usiing download movie then using avi-vcd after that ifoedit