I had an old camera of sony (sony handycam DCR-HC20E)
and several tapes in miniDV format that I wanted to convert to AVI.
I have a old computer (Asus Laptop series L about 2003-2004 year) and in this computer there is present the miniDV port (firewire) the same port of the video camera:
In this computer run Ubuntu 12.04 and I have used the program Kino to get the video and convert it in AVI.
It worked really well.