I want to convert VOB to AVI

[Machina]

I need to convert VOB files to AVI files.
Acctually just a part of the VOB file - 15 seconds, but I can cut it out with VirtualDub later.

I know there are many RIPPING programs, but I don't have enough space to rip the file.

Are there any programs that can convert VOB files RIGHT OF THE DVD to AVI files or MPEG files???