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Revision as of 10:18, 10 April 2007 by Fy0Rdz (talk | contribs)
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  • Extension: oma, omg
  • Company: Sony

Container format used to encapsulate ATRAC3 and ATRAC3 for use with Sony's portable players. Files ending with .omg are protected with the OpenMG DRM system.

The OMA file format contains a payload scrambled with a 32-bit value [1]. The format is known to carry MP3 and ATRAC3 audio. The metadata format is a variant of ID3v2 and uses standard ID3v2 frame types, such as TIT2, TPE1, TALB and TCON. In addition to these standard frame types, TXXX and GEOB frames contain OpenMG-specific metadata.

 TXX   OMG_TRACK  "track number (ASCII)"
 TXX   OMG_AGENR  "content description (ASCII)"
 TXX   OMG_ATPE1  "leader performer (ASCII)"
 GEOB  OMG_BLKSI  contains a metadata structure. observed strings include:
 GEOB  OMG_OLINF  binary blob