[mpeg-OTspec] RE: font media types

Tue Apr 5 19:52:35 CEST 2011

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
> 
> 
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David Singer
Multimedia and Software Standards, Apple Inc.