Winff is a frontend for FFMPEG that runs on Windows XP, Linux. It will convert most any video file that FFmpeg will convert. Developed by Matthew Weatherford and Ian Stoffberg
License: Open Source
WinFF is primarily focused on converting media files with a simple and portable interface, while Format Factory offers a more comprehensive toolset that includes editing features and a built-in media player. Both applications support a wide range of formats, but Format Factory may be more suitable for users looking for additional functionality.