Disclosure | Fully documented. For wrapper, see QuickTime; for bitstream, see MP3_ENC. |
Documentation | See QuickTime and MP3_ENC. |
Adoption | Used by the Apple iTunes music distribution service; may be in diminished production or discontinued as AAC receives wider use. See also QuickTime and MP3_ENC. |
Licensing and patent claims | See
QuickTime. |
Transparency | See QuickTime and MP3_ENC. |
Self-documentation | See
QuickTime. |
External dependencies | Files from iTunes can be played on an iPod device and as many as five computers authorized by the enduser's agreement; see About Music Store Authorization and Deauthorization. |
Technical protection considerations | Files from iTunes can be played by endusers who use the required Apple ID and Password. The Apple iTunes FairPlay system to protect content is the subject of a Green Paper from the Digital Media research initiative at the Berkman Center of Harvard Law School. See also
QuickTime. |
Tag type | Value | Note |
Filename Extension | mp3 | Reported by an iTunes user; files said to be protected according to iTunes policies. |
Internet Media Type | | None specific identified as of 2004-05-26; see
QuickTime. |
Audio type tag (QuickTime) | 0x6D73055 | Four-character code (as Hex) identifying the MP3 audio codec (CBR only, pre-QT4.1), from QuickTime File Format, p. 103 or p. 109.1 |
Audio type tag (QuickTime) | .mp3 | Four-character code identifying the MP3 audio codec (CBR & VBR, QT4.1 and later), from QuickTime File Format, p. 103 or p. 109.1 |