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 an open-source tool primarily focused on converting video formats with batch processing capabilities, while XRECODE is a more comprehensive audio and video converter that also includes audio editing features but has fewer format options in its free version.