http://www.nchsoftware.com/prism/index.html

Download Prism Software
Download Prism for Windows
Download Prism for Mac OS (Intel Version)
Download Prism for Mac OS (PPC Version)

Convert AVI, MP4, WMV, MOV, MPEG, FLV and other video file formatsPrism is one of the most stable and comprehensive multi format video converters available and is very easy to use.
Convert or compress video files within minutes of downloading
Universal video converter supporting all popular formats
Includes batch video converter to convert thousands of files
Free version available for non-commercial use (see below)

Works on Windows Vista 2000/XP/2008/7
For earlier W ... Read more »