(RFC 5334 published September 2008, subtype last updated September 2008) Type name: application Subtype name: ogg Required parameters: none Optional parameters: codecs, whose syntax is defined in RFC 4281. See section 4 of RFC 5334 for a list of allowed values. Encoding considerations: See section 6 of RFC 5334. Security considerations: See section 7 of RFC 5334. Interoperability considerations: None, as noted in section 8 of RFC 5334. Published specification: RFC 3533 Applications which use this media type: Scientific and otherwise that require various multiplexed signals or streams of data, with or without scriptable control of content. Additional information: Magic number(s): The first four bytes, 0x4f 0x67 0x67 0x53, correspond to the string "OggS". File extension(s): .ogx RFC 3534 defined the file extension .ogg for application/ogg, which RFC 5334 obsoletes in favor of .ogx due to concerns where, historically, some implementations expect .ogg files to be solely Vorbis-encoded audio. Macintosh File Type Code(s): OggX Person & Email address to contact for further information: See "Authors' Addresses" section. Intended usage: COMMON Restrictions on usage: The type application/ogg SHOULD only be used in situations where it is not appropriate to serve data under the video/ogg or audio/ogg types. Data served under the application/ogg type SHOULD use the .ogx file extension and MUST contain an Ogg Skeleton logical bitstream to identify all other contained logical bitstreams. Author: See "Authors' Addresses" section. Change controller: The Xiph.Org Foundation.