Format
Sony OpenMG Audio
Summary
- Name
- Sony OpenMG Audio
- Identifiers
-
- MIME: audio/ATRAC-ADVANCED-LOSSLESS
- PUID: fmt/2018
- Format type
- Audio
- Description
- Sony OpenMG Audio files, often used for Minidisc players. The file, though originally designed for ATRAC3 (Adaptive Transform Acoustic Coding) audio files, can have different audio codecs such as MP3, ATRAC, ATRAC3, Linear PCM and WAV. These files can have DRM (digital rights management) protection, OpenMG refereing to the DRM system developed by Sony for managing and protecting digital music data on a personal computer. The OpenMG files have extensions of .omg and .oma.
- File extensions
-
oma - Submitted by
- University of Melbourne / University of Melbourne
- Developed by
- Sony / Sony
Internal signatures
Sony Open MG Audio
- Description
- BOF; Offset: 0; Magic Bytes 'ea3.' followed in 996-3996 bytes by 'EA3'{1}0x0060{2}00000000010F5000
- Provenance
- v.121: Amended internal signature. Submitted by Brigham Young University.
Byte sequences
- Min Frag Length
- Absolute from BOF
- Offset
- 0
- Max offset
- 0
- Byte Sequence
656133{3069}454133- Endianness
- None
- Provenance
- v.121: signature created. Submitted by Brigham Young University.
Byte sequences
- Min Frag Length
- Absolute from BOF
- Offset
- 8
- Max offset
- 8
- Byte Sequence
6F70656E4D47- Endianness
- None
Changelog
-
V121
- Release date
- 24 September 2025
-
Added signature
Sony OpenMG Audio: Signature researched and samples provided by Brigham Young University.
-
Updated
Sony OpenMG Audio: Amended internal signature 'Sont OpenMG Audio' and added a new internal signature 'Sony Open MG File'. Submitted by Brigham Young University.
-
V120
- Release date
- 25 February 2025
-
Added format
Sony Open MG Audio: Full entry added. Submitted by University of Melbourne.
-
Added signature
Sony Open MG Audio: Signature researched and samples provided by University of Melbourne.