[ogg-dev] embeding xml to ogg

Benjamin M. Schwartz bmschwar at fas.harvard.edu
Mon Jun 4 13:20:31 PDT 2012

On 06/04/2012 04:08 PM, Martin Leese wrote:
> "Benjamin M. Schwartz" wrote:
>> Just store the XMP in a
>> VorbisComment field named "XMP" (or whatever name you like).
> This suggestion falls well short of an optimal
> solution.

You haven't specified any requirements, so I have no idea what would be
more helpful.

> The optimal solution is described at:
> https://wiki.xiph.org/XMLEmbedding

As that page says, "This page is for development of a specification for
embedding XML streams in Ogg.".  "XML streams" are not simply XML
documents.  They are _temporally subdivided_ XML documents, such as Jabber
(XMPP) conversation streams.

I'm not an expert on XMP, but given that it's typically applied to still
images and PDF files, I'm pretty confident that XMP documents are not
meaningfully XML streams, so applying temporal muxing would not make sense.

> However, this draft hasn't been touched since
> 2007.

That's because, as it turns out, almost no one actually wants to mux
temporal XML streams into Ogg.


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