iSkysoft
iMedia Converter for Mac
It was recommended by lots of famous mac-related sites, such as macworld.com, macnn.com, maclife.com, etc.
It's a total multimedia converter for Macintosh, converting all popular multimedia to the format you need: DVD(even encrypted DVD), HD video(ts, m2ts, tp, trp, HD WMV, HD MP4), ripped VOB files, FLV, AVI, MOV, MKV, 3GP, MPEG, DAT, MOD, RMVB, RM, OGG, AAC, MP3...