Hi, I have a ton of 1080p HD .mkv movie files on my macbook pro. Each of these files ranges from like 6-13GB in size. I need a program that will take each of these files and convert them into a format that the iPhone can use. Also I would like to make sure that these 6-13GB files are reduced in size so that one movie doesn't completely own my phone. I don't care if its paid or free. Thanks!!