Emicsoft iPhone Ringtone Maker for Mac can create ringtones in M4R format. It can convert almost all video and audio formats like MOV, AVI, MPEG, WMV, MP4, FLV, MKV, H.264/MPEG-4, DivX, XviD, RM, RMVB, MP3, WMA, AAC into iPhone M4R format.
Emicsoft iPhone Ringtone Maker for Mac can create ringtones in M4R format. It can convert almost all video and audio formats like MOV, AVI, MPEG, WMV, MP4, FLV, MKV, H.264/MPEG-4, DivX, XviD, RM, RMVB, MP3, WMA, AAC into iPhone M4R format.