That is normal and you can't change capture size, since it is a copy of the original.
just to make sure
i'm not talking about import video files
i'm taking about capture video from DV camera
is it really make so big files?
in hollywood films it dosent take 200 MB for 1 min
DV and HDV video record to tape at 25mbps. A 1-hour tape when captured will be about 13GB. You can't change that. If you are comparing to DVD, that is a much more highly compressed format for delivery. You want a better quality for editing, and thus the larger file sizes. DV and HDV are actually quite small compared to uncompressed, or even ProRes or other codecs that create files many times as big. Most of the new AVCHD cameras record at 24mbps, or even less. So these file sizes are the norm and can't be compared to DVD or web streaming or YouTube format sizes.