| Extension | .m4p |
| Category | audio |
| Description | The M4P format is a unique version of the MPEG-4 Part 14 multimedia format, specifically designed for storing digital audio. Apple, the format's creator, uses it to prevent unauthorized copying and distribution of digital music files, particularly those purchased from the iTunes Store. |
| Technical details | This format employs Advanced Audio Coding (AAC) as its primary audio codec, ensuring compatibility with a wide range of audio qualities and frequencies. M4P files are protected by FairPlay, Apple's digital rights management (DRM) system. This DRM system uses encryption and verification to ensure access only to authorized devices. This safeguards digital audio files from unauthorized copying and sharing. |
