MIME Types and File Extensions
WARNING: this page is under development and discussion - none of this are currently official Xiph recommendations.
.ogg - application/ogg
- can contain any logical bitstreams multiplexed together in an ogg container
- has been defined as such in RFC 3534 http://www.ietf.org/rfc/rfc3534.txt
- .ogg has traditionally been used for Ogg Vorbis files, so an important subpart of the ".ogg" files will be just Ogg Vorbis
- .ogg has more recently also been used for Ogg FLAC and for Ogg Theora
- it is recommended that random multitrack files contain a skeleton track to identify all containing logical bitstreams
.oga - audio/ogg
- audio in Ogg
- Vorbis, Speex, FLAC, Ghost, OggPCM
.ogv - video/ogg
- a/v in Ogg
- Theora, Theora + Vorbis, Theora + Speex, Theora + FLAC, Dirac + Vorbis, MNG + FLAC, Tarkin, OggUVS
.spx - audio/ogg+speex
- .spx has traditionally been used for Ogg Speex files and should be considered for backwards-compatibility
Codec MIME types
Codecs need their own MIME types for streaming and to be used in multitrack ogg files using skeleton:
- audio/vorbis for Vorbis without container
- video/theora for Theora without container
- audio/speex for Speex without container
- audio/flac for FLAC (is audio/flac currently being used for flac in native container?)