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 - Source
- University of Melbourne / University of Melbourne
- Developed by
- Sony / Sony
Internal signatures
Sony Open MG Audio
- Note
- BOF; Offset: 0; Magic Bytes 'ea3.' followed in 996-3996 bytes by 'EA3'{1}0x0060{2}00000000010F5000
Byte sequences
- Min Frag Length
- Absolute from BOF
- Offset
- 0
- Max offset
- 0
- Byte Sequence
656133{3069}454133- Endianness
- None
Byte sequences
- Min Frag Length
- Absolute from BOF
- Offset
- 0
- Max offset
- 0
- Byte Sequence
{8-16}6F70656E4D47- Endianness
- None
Changelog
-
Added in V121
- Release date
- 24 September 2025
Sony OpenMG Audio: Amended internal signature 'Sont OpenMG Audio' and added a new internal signature 'Sony Open MG File'. Submitted by Brigham Young University.
Sony OpenMG Audio: Signature researched and samples provided by Brigham Young University.
-
Added in V120
- Release date
- 25 February 2025
Sony Open MG Audio: Signature researched and samples provided by University of Melbourne.
Sony Open MG Audio: Full entry added. Submitted by University of Melbourne.