Free Studio is a free program which contains a lot of utilities which allows you to work with audio and video files. Using Free Studio, you can convert video and audio files between different formats for iPod, PSP, iPhone, Blackberry and other portable devices.

If you are a media file junky and love to convert between different video types, then FormatFactory is the simplest tool which you will come across. It is a multi functional media converter that handles 12 types of video formats, 6 audio types, 8 image formats, iPhone/PSP and DVD/ISO conversions with speed and accuracy.