Converting video from one format to another has always been a thing for the geeks. Even the tools were intimidating for day to day users. Mac and iphone users have to convert videos every now and them to put them in their itunes library or sync them to the phone. Evon is a nifty little app with a drag and drop interface for converting video formats. Get it from:http://thelittleappfactory.com/evom/
Its completely free.