WinFF is a simple free GUI for the opensource media converter ffmpeg, the command line video converter. WinFF will convert almost any video file that FFmpeg will convert. WinFF converts multiple files in multiple formats at one time. WinFF is free opensource software released under GPLv3 license and is supported in Linux and Windows. WinFF supports multiple languages like Brazillian Portuguese, Bulgarian, Chinese Tradditional, Danish, English, French, German, Italian, Polish, Portuguese, Spanish, and Turkish.