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 a free and open-source tool suitable for users who prefer a lightweight application with batch processing capabilities, while VIP Video Converter offers a more user-friendly experience with built-in editing features but comes at a cost.