Connected: An Internet Encyclopedia
Media Types
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Media Types
Media Types
MEDIA TYPES
[RFC1521] specifies that Content Types, Content Subtypes, Character
Sets, Access Types, and Conversion values for MIME mail will be
assigned and listed by the IANA.
Content Types and Subtypes
--------------------------
Type Subtype Description Reference
---- ------- ----------- ---------
text plain [RFC1521,Borenstein]
richtext [RFC1521,Borenstein]
enriched [RFC1563]
tab-separated-values [Paul Lindner]
sgml [RFC1874]
multipart mixed [RFC1521,Borenstein]
alternative [RFC1521,Borenstein]
digest [RFC1521,Borenstein]
parallel [RFC1521,Borenstein]
appledouble [MacMime,Patrik Faltstrom]
header-set [Dave Crocker]
form-data [RFC1867]
related [RFC1872]
report [RFC1892]
message rfc822 [RFC1521,Borenstein]
partial [RFC1521,Borenstein]
external-body [RFC1521,Borenstein]
news [RFC 1036, Henry Spencer]
application octet-stream [RFC1521,Borenstein]
postscript [RFC1521,Borenstein]
oda [RFC1521,Borenstein]
atomicmail [atomicmail,Borenstein]
andrew-inset [andrew-inset,Borenstein]
slate [slate,terry crowley]
wita [Wang Info Transfer,Larry Campbell]
dec-dx [Digital Doc Trans, Larry Campbell]
dca-rft [IBM Doc Content Arch, Larry Campbell]
activemessage [Ehud Shapiro]
rtf [Paul Lindner]
applefile [MacMime,Patrik Faltstrom]
mac-binhex40 [MacMime,Patrik Faltstrom]
news-message-id [RFC1036, Henry Spencer]
news-transmission [RFC1036, Henry Spencer]
wordperfect5.1 [Paul Lindner]
pdf [Paul Lindner]
zip [Paul Lindner]
macwriteii [Paul Lindner]
msword [Paul Lindner]
remote-printing [RFC1486,Rose]
mathematica [Van Nostern]
cybercash [Eastlake]
commonground [Glazer]
iges [Parks]
riscos [Smith]
eshop [Katz]
x400-bp [RFC1494]
sgml [RFC1874]
image jpeg [RFC1521,Borenstein]
gif [RFC1521,Borenstein]
ief Image Exchange Format [RFC1314]
g3fax [RFC1494]
tiff Tag Image File Format [Rose]
cgm Computer Graphics Metafile [Francis]
naplps [Ferber]
audio basic [RFC1521,Borenstein]
video mpeg [RFC1521,Borenstein]
quicktime [Paul Lindner]
The "media-types" directory contains a subdirectory for each content
type and each of those directories contains a file for each content
subtype.
|-application-
|-audio-------
|-image-------
|-media-types-|-message-----
|-multipart---
|-text--------
|-video-------
URL = ftp://ftp.isi.edu/in-notes/iana/assignments/media-types
Character Sets
--------------
All of the character sets listed the section on Character Sets are
registered for use with MIME as MIME Character Sets. The
correspondance between the few character sets listed in the MIME
specification [RFC1521] and the list in that section are:
Type Description Reference
---- ----------- ---------
US-ASCII see ANSI_X3.4-1968 below [RFC1521,Borenstein]
ISO-8859-1 see ISO_8859-1:1987 below [RFC1521,Borenstein]
ISO-8859-2 see ISO_8859-2:1987 below [RFC1521,Borenstein]
ISO-8859-3 see ISO_8859-3:1988 below [RFC1521,Borenstein]
ISO-8859-4 see ISO_8859-4:1988 below [RFC1521,Borenstein]
ISO-8859-5 see ISO_8859-5:1988 below [RFC1521,Borenstein]
ISO-8859-6 see ISO_8859-6:1987 below [RFC1521,Borenstein]
ISO-8859-7 see ISO_8859-7:1987 below [RFC1521,Borenstein]
ISO-8859-8 see ISO_8859-8:1988 below [RFC1521,Borenstein]
ISO-8859-9 see ISO_8859-9:1989 below [RFC1521,Borenstein]
Access Types
------------
Type Description Reference
---- ----------- ---------
FTP [RFC1521,Borenstein]
ANON-FTP [RFC1521,Borenstein]
TFTP [RFC1521,Borenstein]
AFS [RFC1521,Borenstein]
LOCAL-FILE [RFC1521,Borenstein]
MAIL-SERVER [RFC1521,Borenstein]
content-id [RFC1873]
Conversion Values
-----------------
Conversion values or Content Transfer Encodings.
Type Description Reference
---- ----------- ---------
7BIT [RFC1521,Borenstein]
8BIT [RFC1521,Borenstein]
BASE64 [RFC1521,Borenstein]
BINARY [RFC1521,Borenstein]
QUOTED-PRINTABLE [RFC1521,Borenstein]
MIME / X.400 MAPPING TABLES
MIME to X.400 Table
MIME content-type X.400 Body Part Reference
----------------- ------------------ ---------
text/plain
charset=us-ascii ia5-text [RFC1494]
charset=iso-8859-x EBP - GeneralText [RFC1494]
text/richtext no mapping defined [RFC1494]
application/oda EBP - ODA [RFC1494]
application/octet-stream bilaterally-defined [RFC1494]
application/postscript EBP - mime-postscript-body [RFC1494]
image/g3fax g3-facsimile [RFC1494]
image/jpeg EBP - mime-jpeg-body [RFC1494]
image/gif EBP - mime-gif-body [RFC1494]
audio/basic no mapping defined [RFC1494]
video/mpeg no mapping defined [RFC1494]
Abbreviation: EBP - Extended Body Part
X.400 to MIME Table
Basic Body Parts
X.400 Basic Body Part MIME content-type Reference
--------------------- -------------------- ---------
ia5-text text/plain;charset=us-ascii [RFC1494]
voice No Mapping Defined [RFC1494]
g3-facsimile image/g3fax [RFC1494]
g4-class1 no mapping defined [RFC1494]
teletex no mapping defined [RFC1494]
videotex no mapping defined [RFC1494]
encrypted no mapping defined [RFC1494]
bilaterally-defined application/octet-stream [RFC1494]
nationally-defined no mapping defined [RFC1494]
externally-defined See Extended Body Parts [RFC1494]
X.400 Extended Body Part MIME content-type Reference
------------------------- -------------------- ---------
GeneralText text/plain;charset=iso-8859-x[RFC1494]
ODA application/oda [RFC1494]
mime-postscript-body application/postscript [RFC1494]
mime-jpeg-body image/jpeg [RFC1494]
mime-gif-body image/gif [RFC1494]
REFERENCES
[MacMime] Work in Progress.
[RFC1036] Horton, M., and R. Adams, "Standard for Interchange of
USENET Messages", RFC 1036, AT&T Bell Laboratories,
Center for Seismic Studies, December 1987.
[RFC1494] Alvestrand, H., and S. Thompson, "Equivalences between 1988
X.400 and RFC-822 Message Bodies", RFC 1494, SINTEF DELAB,
Soft*Switch, Inc., August 1993.
[RFC1521] Borenstien, N., and N. Freed, "MIME (Multipurpose Internet
Mail Extensions) Part One: Mechanisms for Specifying and
Describing the Format of Internet Message Bodies", RFC 1521,
Bellcore, Innosoft, September 1993.
[RFC1563] Borenstien, N., "The text/enriched MIME content-type". RFC
1563, Bellcore, January 1994.
[RFC1867] Nebel, E., L. Masinter, "Form-based File Upload in HTML",
RFC 1867, Xerox Corporation, November 1995.
[RFC1872] Levinson, E., "The MIME Multipart/Related Content-type", RFC
1872, Accurate Information Systems, Inc. December 1995.
[RFC1873] Levinson, E., "Message/External-Body Content-ID Access
Type", RFC 1873, Accurate Information Systems, Inc. December
1995.
[RFC1874] Levinson, E., "SGML Media Types", RFC 1874, Accurate
Information Systems, Inc. December 1995.
PEOPLE
[Borenstein] Nathaniel Borenstein, <NSB@bellcore.com>, April 1994.
[Larry Campbell]
[Dave Crocker] Dave Crocker <dcrocker@mordor.stanford.edu>
[Terry Crowley]
[Eastlake] Donald E. Eastlake 3rd, dee@cybercash.com, April 1995.
[Francis] Alan Francis, A.H.Francis@open.ac.uk, December 1995.
[Glazer] David Glazer, <dglazer@best.com>, April 1995.
[Katz] Steve Katz, <skatz@eshop.com>, June 1995.
[Rose] Marshall Rose, <mrose@dbc.mtview.ca.us>, April 1995.
[Paul Lindner]
[Parks] Curtis Parks, <parks@eeel.nist.gov>, April 1995.
[PXF] Patrik Faltstrom <paf@nada.kth.se>
[Ehud Shapiro]
[Smith] Nick Smith, <nas@ant.co.uk>, June 1995.
[Henry Spencer]
[Van Nostern] Gene C. Van Nostern <gene@wri.com>, February 1995.
[]
Connected: An Internet Encyclopedia
Media Types