You will need more than soft ware, when I used analog cameras I used dazzle software and they also had a piece of hardware that stored the analog as it was converted. It may have changed by now. I do recommend this software it was very easy to use and not that expensive. However the storing of these files is ridiculous, keep that in mind what ever you do. You might be better off getting a digital recorder. About 800.00 dollars last I checked. If you give more details at what you’re trying to accomplish I might be able to help more. For example they have places that take a standard analog vhs tape and will convert it for about 15.00. Camera shops usually offer this service.
Hope this helps