Convert M4R to MP4
How to convert .m4r audio to .mp4 format.
How to convert m4r to mp4 file
Converting iPhone Ringtone Files directly to MPEG-4 Videos (.m4r to .mp4 conversion) is certainly possible, but actually not necessary. All you need to do is simply rename the file's suffix from M4R to MP4.
Alternatively, you can use an audio converter, such as the Tiny Audio Converter.
