[vorbis-dev] [Fwd: Re: Regarding non-streaming Ogg]

Dan Miller dan at on2.com
Wed Jan 8 11:33:18 PST 2003



[pardon me if this retreads some ground, but I'm just getting up to speed on this issue]
so am I to understand  --

application/ogg is for downloading, and will invoke an app that supposedly can parse *any* ogg file --
audio/vorbis is for streaming -- but this is narrowly defined as vorbis audio only.  Presumably the thinking is that a streaming application is likely to be less general-purpose?

So when we get Theora working, we'll need to go back to the IETF and get video/theora, video/theora-vorbis, or something like that.  And then again with Tarkin?  What if someone compresses Tarkin with a Speex audio stream?  Or metadata? etc.

ISTM there is a logical inconsistency here: the download MIME type is at the OGG (wrapper) level, whereas streaming is one level down at the content level.   

The *logical* thing to do (which of course may not be an option here) would be to have a streaming/ogg type for the *general* case that one is streaming OGG files without regard to exactly what is in them.

-dbm

<p><p>> -----Original Message-----
> From: Linus Walleij [mailto:triad at df.lth.se]
> Sent: Wednesday, January 08, 2003 5:27 AM
> To: vorbis-dev at xiph.org
> Subject: [vorbis-dev] [Fwd: Re: Regarding non-streaming Ogg]
> 
> 
> This is my previous conversation with Colin Perkins at IETF regarding
> audio/vorbis. For interested parties. Last two paragraphs are the most
> interesting ones.
> 
> Linus
> 
> -----Vidarebefordrat meddelande-----
> 
> From: Colin Perkins <csp at isi.edu>
> To: Linus Walleij <triad at df.lth.se>
> Subject: Re: Regarding non-streaming Ogg
> Date: 20 Jun 2001 16:17:34 -0400
> 
> --> Linus Walleij writes:
> >Colin,
> >
> >regarding application/ogg, 
> draft-walleij-ogg-mediatype-02.txt which is not
> >subject to streaming issues like the audio/vorbis, could 
> this draft be
> >advanced to be a proposed standard on the standards track? 
> This would be
> >good since it provides a fallback MIME type for downloading 
> .ogg files off
> >webservers for example.
> 
> Provided that it explains that it is not for streaming, and 
> that another
> format is in development, then I don't see why not.
> 
> >Regarding the audio/vorbis type, is it correct that from now 
> on, the same
> >MIME type is to be used for sockets and streaming, so that 
> audio/vorbis is
> >the MIME type in both cases? I was confused when reading through the
> >drafts and seeing that the content usually denoted as 
> audio/mpeg becomes
> >audio/MPA under RTP for example.
> 
> Yes. The audio/mpa vs. audio/mpeg thing is the result of combining two
> previously separate namespaces, and not something we should emulate in
> new formats.
> 
> Colin
> 
> 
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