There is actually no need to convert iPhone ringtones (.m4r) to standard .mp4 files, you can just rename the extension from m4r to mp4 and that's it. You can also do this with some audio converters, but they will usually just rename the files as well.
Convert Apple iPhone ringtone format to MPEG-4 video file format.
We have found 2 software records in our database eligible for .m4r to .mp4 file format conversion.
Apple macOS / Mac OS X software - convert m4r to mp4 on OS X
Aiseesoft iPhone Ringtone Maker for Mac is easy-to-use iPhone ringtone creator that is able to convert many audio and video formats (MP3, WMA, AAC, RM, MOV, DivX, AVI, MKV, FLV etc.) to iPhone M4R ringtone format.
Convert from m4r file
|Yes, Aiseesoft iPhone Ringtone Maker for Mac supports m4r file conversion as a source file type.||Yes||Yes||m4r editor||Yes||No||Yes||No|
to mp4 file
|Yes, Aiseesoft iPhone Ringtone Maker for Mac supports mp4 file conversion as a target file type.||No||No||No||No||No||No||No|
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned m4r to mp4. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Software that is capable of convert audio files from one kind of format to many possibilities.
Supported formats: 3gp, 3g2, aac, adts, ac3, aifc, aiff, aif, amr, m4a, m4r, m4b, caf, mp1, mpeg, mpa, mp2, mp3, mp4, snd, au, sd2, wav.