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# Digital audio file formats

## Overview

|MPEG 1 layer 3      |Description                                                                                                                                                                                                                                         |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|Supported by        |Movie import component                                                                                                                                                                                                                              |
|Macintosh file type |`'Mp3 '`, `'SwaT'`, `'MPEG'`, `'PLAY'`, `'MPG3'`, `'MP3 '`                                                                                                                                                                                          |
|File name extensions|`.mp3`, `.swa`                                                                                                                                                                                                                                      |
|Metadata handling   |Metadata from ID3v1-style MP3 files is imported into the QuickTime movie.Title maps to `kUserDataTextFullName`, artist maps to `'©ART'`, album maps to `'©alb'`, year maps to `'©day'`, comment maps to `'©cmt'`, and track number maps to `'©des'`.|
|Software required   |QuickTime 4                                                                                                                                                                                                                                         |

|WAV                 |Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|Supported by        |Movie import component                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|Macintosh file type |`'WAVE'`, `'.WAV'`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|File name extensions|`.wav`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|Metadata handling   |All Microsoft-defined “tombstone” data is transferred to the imported movie’s user data. Metadata fields that have QuickTime equivalents are mapped as follows: `'ICOP'` maps to `kUserDataTextCopyright`, `'ISBJ'` maps to `kUserDataTextInformation`, `'INAM'` maps to `kUserDataTextFullName`, `'ICRD'` maps to `'©day'`, `'IMED'` maps to `'©fmt'`, `'ISRC'` maps to `'©src'`. Where no QuickTime equivalent exists, the metadata item’s four-character code is modified by replacing the initial `I` with the symbol `©`. All other characters remain unchanged.|
|Software required   |QuickTime 2.5 or later                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |

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