https://wiki.multimedia.cx/api.php?action=feedcontributions&user=LwlWca&feedformat=atomMultimediaWiki - User contributions [en]2024-03-29T07:17:35ZUser contributionsMediaWiki 1.39.5https://wiki.multimedia.cx/index.php?title=Oma&diff=7642Oma2007-04-10T23:44:34Z<p>LwlWca: </p>
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<div>* Extension: oma, omg<br />
* Company: [[Sony]]<br />
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Container format used to encapsulate [[Sony ATRAC|ATRAC3]] and ATRAC3 for use with Sony's portable players. Files ending with .omg are protected with the [[OpenMG]] [[DRM]] system.<br />
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The OMA file format contains a payload scrambled with a 32-bit value [http://www.waider.ie/hacks/workshop/c/mple/FILE_FORMAT_v2.txt]. 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.<br />
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TXX OMG_TRACK "track number (ASCII)"<br />
TXX OMG_AGENR "content description (ASCII)"<br />
TXX OMG_ATPE1 "leader performer (ASCII)"<br />
GEOB OMG_BLKSI contains a metadata structure. observed strings include:<br />
KEYRING<br />
EKB<br />
SHARE_P_SID<br />
REFID<br />
GEOB OMG_OLINF binary blob <br />
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[[Category:Container Formats]]</div>LwlWca