May be you can try Tipard Video Converter which can convert various video formats you want.
AVI, MP4, MPG, MOD, TOD, MOV, MKV, WMV, DivX, XviD, MPEG-1/2, 3GP, 3G2, VOB, MPV, FLV, and HD videos(HD TS, HD MTS, HD M2TS, HD WMV, etc.
M4A, MP3, AC3, AAC, WMA, WAV, OGG, AU, Nut, AIFF, FLAC, AMR, etc.
Further more, you can enjoy its powerful editing functions. And it owns fast converting speed without losing any quality which saves you lots time.
And it supports all popular devices,such as iPod, iPod touch, iPod touch 2, iPod nano, iPod nano 4, iPod classic, iPhone, iPhone 3GS, iPhone 4, Apple TV and etc. Answered Nov, 11 2011