[theora-dev] RE: [vorbis-dev] File extensions

Ralph Giles giles at xiph.org
Mon Jan 13 14:02:48 PST 2003

On Monday, January 13, 2003, at 10:25  am, Dan Miller wrote:

> The present thinking appears to be: get the IETF to adopt 
> application/ogg, with the idea that somewhere down the line there will 
> be a media player that can handle all OGG types gracefully.  In 
> addition, I believe we're asking for an audio/vorbis type as well, to 
> cover audio streaming.  Presumably we will ask for a video streaming 
> type as well at some point.

On Monday, January 13, 2003, at 01:17  pm, Monty wrote:

> It should be video/ogg, counterpart to audio/ogg and subset of
> application/ogg.

I don't think we should go for audio/ogg and video/ogg right now. Of 
course, trying to deal with container and transport formats in mime is 
never happy. However, as Dan mentioned, one of the places you really 
need separate mimetypes for the vorbis and theora codecs is in rtp 
streaming, where each is sent over a separate connection and recombined 
in the player. This contrasts with http streaming of (possibly 
multiplexed) ogg-encapsulated packets, where distinguishing the 
contents of the stream is an issue at a different layer of software 
with several solutions. A single mimetype of application/ogg would be 
the functional equivalent of the two rtp mimetypes.

This suggests our priorities should be: registering application/ogg for 
the general case, followed by registering audio/vorbis for the rtp 
streaming case. Registration of video/theora and [audio|video]/ogg can 
be informed by tool development at a later date.


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