48f328a1_Convert_AVI_to_Various_Formats__Key_Features
[Top AVI Converter] 10. Clone2Go Free Video Converter [Pros] An easy to use interface, handy video setting options and a couple of useful extras. [Cons] Beware of being interrupted while converting your videos on the Windows free version. No free version is available for Mac users. [Key Features] 
A clean interface and a couple extra features like an embedded player and Youtube video download capability. It is important to mention however to mention that it has good support for input but not that much for output, still you will be good to work with AVI video files and other popular formats or containers. A Mac version is available but not for free.
Top 20 Free AVI Converter - Convert AVI to Various Formats
Key Features