80 GB hard disk shows up as 76 GB

Drove manufacturers specify drive capacities in "Giga Bytes." ( A Gigaa. Byte is equal to 1024 "Kilo Byte is equal to 1024 Bytes.) But they measure the capacity using 1000 as the multiplier. Specifying the capacity in this way is a marketing gimmickit shows a larger number. so an " 80GB" hard disk has a capacity if 80 x 1000 x 1000 %1024 % 1024, which is equal to 76.29 GB. this is the capacity you see in windows explorer.

most software capture the digital video content from a DV camera by default in multiple segments. this is known as scene Detection, where the software tries to recognise major changes in scene. When it encounters such a change, it stops capturing to the current file and continues chapters on DVD. It increases file manageability. You will need to explore the options in your capture sofware to be able to disable this option and capture the video as a single file.