M4R – MPEG-4 Ringtone
M4r File and How to Open. M4r File? The format for audio files known as m4r was created by Apple, Inc. This is the file extension used for ringtones found on the iPhone and other Apple products. The basis for the.m4r format, used just for ringtone storage, is the MPEG-4 file format. Usually lasting between … Read more