[mpeg-OTspec] RE: font media types

Tue Apr 5 21:19:58 CEST 2011

David, good question but I find this approach a bit messy to deal with. My preference would be to establish a well-define set of types that cover the most common scenarios - we can always extend them (or add additional parameters, if necessary) in the future.

Thank you,
Vlad

> -----Original Message-----
> From: David Singer [mailto:singer at apple.com]
> Sent: Tuesday, April 05, 2011 1:53 PM
> To: Levantovsky, Vladimir
> Cc: David Lemon; OTspec; Chris Lilley; Tab Atkins; Karsten Luecke
> Subject: Re: [mpeg-OTspec] RE: font media types
> 
> Just a question;  would the details of the contents be better expressed
> as an optimal paramater?
> 
> e.g.
> 
> application/font-off;glyphtype="ttf" to indicate that ttf kinds of
> outlines are inside?
> 
> On Apr 5, 2011, at 8:29 , Levantovsky, Vladimir wrote:
> 
> > David,
> >
> > Thank you for your comments. The original intention was that the
> proposed MIME media types should be assigned depending on a specific
> type of glyph outlines data contained in a font, with font-ttf being
> used for TrueType outlines, font-otf for CFF outlines, and font-off as
> an umbrella type to indentify a font that either has both types of the
> outlines or where glyph data type may be unknown to an application.
> >
> > If you believe this is a reasonable approach, I agree that it should
> be clarified in more details. We can also consider changing the
> proposed media types, e.g. to be more specific and use font-ttf, font-
> cff and font-otf for the purposes outlined above.
> >
> > Other opinions / comments?
> >
> > Thank you,
> > Vladimir
> >
> >
> >> -----Original Message-----
> >> From: David Lemon [mailto:lemon at adobe.com]
> >> Sent: Monday, April 04, 2011 10:34 PM
> >> To: Levantovsky, Vladimir; OTspec
> >> Cc: Chris Lilley; Tab Atkins; Paul.Irish at molecular.com; Karsten
> Luecke
> >> Subject: [mpeg-OTspec] RE: font media types [1 Attachment]
> >>
> >> Valdimir et al.,
> >> I'm unfamiliar with mime type applications, but it seems odd to me
> >> that this does not indicate what distinctions are meant to be drawn
> >> between the three proposed types. I'll note that the formats
> >> referenced by their names do not clarify this; TrueType is a subset
> >> of OpenType, which is (at least currently) equivalent to Open Font
> >> Format.
> >>
> >> Perhaps another way to ask this is: How would a compliant
> application
> >> decide which mime type to assign?
> >>
> >> - thanks,
> >>  David L
> >>
> >>
> >> At 10:39 -0700 4/4/11, Levantovsky, Vladimir wrote:
> >>> Dear all,
> >>>
> >>> Please see attached the updated working draft of the ISO/IEC
> >>> 14496-22/PDAM2 with additional Annex E that defines three new media
> >>> types for fonts:
> >>> application/font-ttf,
> >>> application/font-otf, and
> >>> application/font-off
> >>>
> >>> The document needs to be finalized before the end of the week, and
> >>> your comments are greatly appreciated.
> >>>
> >>> Thank you,
> >>> Vladimir
> >>>
> >>>
> >>>> -----Original Message-----
> >>>> From: mpeg-OTspec at yahoogroups.com [mailto:mpeg-
> >> OTspec at yahoogroups.com]
> >>>> On Behalf Of Levantovsky, Vladimir
> >>>> Sent: Wednesday, March 23, 2011 6:39 AM
> >>>> To: OTspec
> >>>> Subject: [mpeg-OTspec] FW: font media types
> >>>> Importance: High
> >>>>
> >>>> Dear AHG,
> >>>>
> >>>> Please see below the email from Mr. Karsten Luecke regarding the
> >>>> registration of the MIME types for various font formats. I brought
> >> this
> >>>> subject for consideration of the WG11 meeting, and we have reached
> >> an
> >>>> agreement that it would make perfect sense for MPEG to register
> the
> >>>> MIME types for OFF and other related font formats (TTF, OTF, ...)
> >> under
> >>>> the existing top level MIME "application" tree.
> >>>>
> >>>> The decision was that the AHG should move quickly to finalize the
> >> list
> >>>> of font formats for MIME type registration, suggest the MIME types
> >> to
> >>>> apply for, and prepare the text of the application to IANA. At the
> >> same
> >>>> time, we will have an extended two-week editing period for the
> >> existing
> >>>> Working Draft Amendment so that the proposed MIME types could be
> >> added
> >>>> in the text of the amendment before it's submitted for ballot.
> >>>>
> >>>> We need to proceed quickly - the text of the application including
> >> the
> >>>> list of font formats and their corresponding MIME types must be
> >>>> finalized no later than April 6th.
> >>>>
> >>>> Thank you and regards,
> >>>> Vladimir
> >>>>
> >>>>
> >>>> -----Original Message-----
> >>>> From: Karsten Luecke [mailto:karsten.luecke at kltf.de]
> >>>> Sent: Sunday, February 06, 2011 6:52 AM
> >>>> Subject: font media types
> >>>>
> >>>> Dear Mr Levantovsky, Mr Atkins, Mr Lilley & Mr Irish,
> >>>>
> >>>> reading
> >>>> http://lists.w3.org/Archives/Public/public-webfonts-
> >>>> wg/2010Nov/0051.html
> >>>> and googling for media types for other font formats, I came across
> >>>>
> >>>> WOFF
> >>>> application/font-woff
> >>>>      according to
> >>>>      http://dev.w3.org/webfonts/WOFF/spec/#appendix-b
> >>>>
> >>>> http://lists.w3.org/Archives/Public/public-webfonts-
> >>>> wg/2010Nov/0051.html
> >>>>
> >>>> EOT
> >>>> application/vnd.ms-fontobject
> >>>>      which seems to be fine according to
> >>>>      http://www.iana.org/assignments/media-types/application/
> >>>>
> >>>> TTF OTF (OFF?)
> >>>> application/vnd.ms-opentype
> >>>>      according to
> >>>>
> >>>> http://msdn.microsoft.com/en-
> >>>> us/library/system.io.packaging.packagepart.contenttype.aspx
> >>>>      but also
> >>>> application/octet-stream
> >>>>      according to
> >>>>      http://www.jbarker.com/blog/2009/mime-type-css-web-fonts
> >>>>      plus a not sufficiently answered request at
> >>>>      http://www.alvestrand.no/pipermail/ietf-types/2008-
> >>>> August/002066.html
> >>>>
> >>>> Is there anything reliable as regards TTF OTF OFF?
> >>>>
> >>>> It were nice to have a single place, like the iana.org page, to
> >> refer
> >>>> to
> >>>> when it comes to this.
> >>>>
> >>>> (The samples on the jbarker.com make me wonder if the trailing dot
> >>>> should be included in the AddType declaration or not.)
> >>>>
> >>>> Best wishes!
> >>>> Karsten
> >>
> >> --
> >> David Lemon
> >> Sr Manager, Type Development
> >> Adobe Systems, Inc.
> >>
> >> 408 536 4152
> >> lemon at adobe.com
> >> http://blogs.adobe.com/typblography
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
> 
> David Singer
> Multimedia and Software Standards, Apple Inc.