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| This table documents the file brand identifiers, as used in the file-type box. Each brand uniquely identifies a specification to which the file conforms, and gives 'permission' for a reader implementing at least that specification to display the file. Note that $20 here means the character 'white space'. | ||
| Code | Abstract | Defined in/by |
| 3g2a | 3GPP2 | 3GPP2 |
| 3ge6 | 3GPP Release 6 extended-presentation Profile | 3GPP |
| 3gg6 | 3GPP Release 6 General Profile | 3GPP |
| 3gp4 | 3GPP Release 4 | 3GPP |
| 3gp5 | 3GPP Release 5 | 3GPP |
| 3gp6 | 3GPP Release 6 basic Profile | 3GPP |
| 3gr6 | 3GPP Release 6 progressive-download Profile | 3GPP |
| 3gs6 | 3GPP Release 6 streaming-server Profile | 3GPP |
| avc1 | Advanced Video Coding extensions | AVC |
| caqv | Casio Digital Camera | Casio |
| isc2 | Files encrypted according to ISMACryp 2.0 | ISMACryp2 |
| iso2 | All files based on the 2004 edition of the ISO file format | ISO |
| isom | All files based on the ISO Base Media File Format | ISO |
| mj2s | Motion JPEG 2000 simple profile | MJ2 |
| mjp2 | Motion JPEG 2000, general profile | MJ2 |
| mp21 | MPEG-21 | MPEG-21 |
| mp41 | MP4 version 1 | MP4v2 |
| mp42 | MP4 version 2 | MP4v2 |
| odcf | OMA DCF (DRM Content Format) | OMA DRM 2.0 |
| opf2 | OMA PDCF (DRM Content Format) | OMA DRM 2.1 |
| opx2 | OMA Adapted PDCF | OMA DRM XBS |
| qt$20$20 | QuickTime | QT |
| sdv$20 | SD Video | SDV |
| M4A$20 | iTunes MPEG-4 audio protected or not, can contain audio + video + 3g text track + chapter track |
iTunes |
| M4B$20 | iTunes AudioBook protected or not can contain audio + video + 3g text track + chapter track |
iTunes |
| M4P$20 | MPEG-4 protected audio | iTunes |
| M4V$20 | MPEG-4 protected audio+video | iTunes |
| MPPI | Photo Player Multimedia Application Format | ISO-MAF |