I am using Winavi 6.2 to convert AVI to DVD burnable format. But when I'm finshed converting and use Nero to burn it, it hugely exceeds the 4.7gb DVD size. But I only converted 6 episodes. For the advanced settings bit, I adjusted the ratio height to 90% and the constant video size was 4700mb. Still nothing. I never had this problem before and I can't figure out what to do now.