WinFF is video conversion software based on FFmpeg. The program is open source and can convert videos into many formats. Mpeg, mov and flv (Flash) are some of the formats that can be converted to avi, for example.
WinFF can further convert to DVD, mobile phone (including BlackBerry and Nokia), Sony Bravia, Creative Zen, wmv, Flash (for websites) and so on.
You can free download WinFF 32, 64 bit and safe install the latest trial or new full version for Windows 10 from the official site.