- Extension
- .m4r
- .nut
- Format
- Binary
- Binary
- Category
- Audio
- Video
- Developer
- Apple Inc.
- The nut file type was created by the FFmpeg project.
- 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.
- The nut file extension is associated with the NUT a patent-free, multimedia container format originally conceived by a few MPlayer and FFmpeg developers that were dissatisfied with the limitations of all currently available multimedia container formats such as AVI, Ogg or Matroska.
- MIME Type
- audio/x-m4r
- application/x-nut
