Aiprosoft Total Video Converter can help you.
http://www.aiprosoft....-video-converter.html
Aiprosoft Total Video Converter integrates all the functions of HD video converter and general video converter, which converts almost all High-Definition and Standard-Definition video formats (AVI, MPEG, WMV, DivX, MP4, H.264/AVC, AVCHD, MKV, RM, MOV, XviD, 3GP, etc.) from one to another. This all-in-one video converter also extract audios from above video files and convert between multi-format audio files including MP3, WMA, WAV, RA, M4A, AAC, AC3 and so on.