Re: MPEG asks for MIME review for the MPEG21 file format
Chris Lilley <chris@w3.org> Sun, 20 May 2007 23:02 UTC
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Date: Sun, 20 May 2007 02:34:50 +0200
From: Chris Lilley <chris@w3.org>
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To: Dave Singer <singer@apple.com>
Cc: Martin Duerst <duerst@it.aoyama.ac.jp>, Anne van Kesteren <annevk@opera.com>, Larry Masinter <LMM@acm.org>, ned.freed@mrochek.com, 'Graham Klyne' <GK@ninebynine.org>, ietf-liaisons@ietf.org, "'Christian Timmerer (ITEC)'" <christian.timmerer@itec.uni-klu.ac.at>, ietf-types@alvestrand.no, ietf-xml-mime@imc.org
Subject: Re: MPEG asks for MIME review for the MPEG21 file format
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On Friday, May 18, 2007, 5:27:52 PM, Dave wrote: (I'm snipping the parts already covered by Martin) DS> Is a ZIP compressed XML file servable under a +xml MIME type? DS> "encoding='zipped Shift_JIS'"? I suspect you mean gzip, which is a compression method; zip is an archive format (often compressed internally). If you started with foo.xml in Shift_JIS, the encoding declaration would say just that. If you then make foo.xml.gz the encoding declaration (when decompressed) says exactly the same thing. The fact that is been gzipped is conveyed out of band, in the http headers: Content-Encoding: gzip There is scope for confusion, since XML uses 'encoding' for 'character encoding' (although that's a big advance on calling it 'charset'). HTTP uses content-encoding. The two uses of the concept 'encoding' occur at different levels in the stack. In consequence, using gzip content-encoding is compatible with +xml media types. -- Chris Lilley mailto:chris@w3.org Interaction Domain Leader Co-Chair, W3C SVG Working Group W3C Graphics Activity Lead Co-Chair, W3C Hypertext CG
- RE: MPEG asks for MIME review for the MPEG21 file… Larry Masinter
- Re: MPEG asks for MIME review for the MPEG21 file… Chris Lilley
- Re: MPEG asks for MIME review for the MPEG21 file… Chris Lilley
- Re: MPEG asks for MIME review for the MPEG21 file… Anne van Kesteren
- Re: MPEG asks for MIME review for the MPEG21 file… Graham Klyne
- Re: MPEG asks for MIME review for the MPEG21 file… Chris Lilley
- Re: MPEG asks for MIME review for the MPEG21 file… Chris Lilley
- Re: MPEG asks for MIME review for the MPEG21 file… Martin Duerst
- Re: MPEG asks for MIME review for the MPEG21 file… Graham Klyne
- Re: MPEG asks for MIME review for the MPEG21 file… Anne van Kesteren
- Re: MPEG asks for MIME review for the MPEG21 file… Chris Lilley
- Re: MPEG asks for MIME review for the MPEG21 file… Chris Lilley
- Re: MPEG asks for MIME review for the MPEG21 file… Martin Duerst
- Re: MPEG asks for MIME review for the MPEG21 file… C. M. Sperberg-McQueen
- Re: MPEG asks for MIME review for the MPEG21 file… Martin Duerst
- RE: MPEG asks for MIME review for the MPEG21 file… Martin Duerst
- Re: MPEG asks for MIME review for the MPEG21 file… Anne van Kesteren
- Re: MPEG asks for MIME review for the MPEG21 file… Chris Lilley
- RE: MPEG asks for MIME review for the MPEG21 file… Larry Masinter