C# Wrapper for FFmpeg for video conversion

I need a C# wrapper for the ffmpeg codec library for converting .AVI, .WMV, .MOV, .MPEG-4, H.263 3GP, XVid MPEG-4 (AVI), Windows Media Video (V.7 WMV), .MP3, .MP4, .FLV files. In others words, I need video converter system. The wrapper will need to accept an input path for the video to be converted and an output path for the converted. ## Deliverables Complete and fully-functional working program(s) in executable form as well as complete source code of all work done.