Freemake Video Converter
This is really a great piece of software.
I use this program all the time, especially when I have downloaded
something or taken it off a camera or video camera.
Load the file and then click to which format you would like to export it.
Very easy to use and it can convert to most formats.
I also like the fact that you can download it offline and use it, as it is not using
bandwidth to convert!!