- Extension
- .m4r
- .mxf
- Format
- Binary
- Binary
- Category
- Audio
- Video
- Developer
- Apple Inc.
- SMPTE
- Description
- M4R is an iTunes ringtone file that stores mono channel audio. They are identical to the M4A format files only that they are correctly used for ringtones.
- Multimedia format used by digital audio and video programs; contains captured audio and video data as well as metadata that describes the media stored in the file; designed by Society of Motion Picture and Television Engineers (SMPTE) as a standard container for audio and video data; can be converted into other formats, such as .AVI or .MOV.
- MIME Type
- audio/x-m4r
- application/mxf
