FFmpeg - Open source multimedia suite for conversion, playback, profiling, and streaming.
Xilisoft Video Converter - Xilisoft Video Converter is easy, fast, reliable, and loaded with features.
HandBrake - HandBrake allows users to easily convert video files into a wide variety of different formats.
Any Video Converter - Any Video Converter is an All-in-One video converting tool with easy-to-use graphical interface, fast converting speed and excellent video quality. It allows you to effortlessly convert video files between every format!
Adobe Media Encoder CC - Create optimized video for any screen size and resolution with Adobe Media Encoder. Available only in Adobe Creative Cloud.
Prism Video Converter - Prism Video Converter is a simple and easy2use converter for converting all audio and video formats including MP4, AVI, MPEG, MOV, FLV and tons of others.