The TCP/IP Guide - MIME Content-Type Header and Discrete Media: Types, Subtypes and Parameters

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The TCP/IP Guide

The TCP/IP Guide
9 TCP/IP Application Layer Protocols, Services and Applications (OSI Layers 5, 6 and 7)
      9 TCP/IP Key Applications and Application Protocols
           9 TCP/IP File and Message Transfer Applications and Protocols (FTP, TFTP, Electronic Mail, USENET, HTTP/WWW, Gopher)
                9 TCP/IP Electronic Mail System: Concepts and Protocols (RFC 822, MIME, SMTP, POP3, IMAP)
                     9 TCP/IP Electronic Mail Message Formats and Message Processing: RFC 822 and MIME
                          9 TCP/IP Enhanced Electronic Mail Message Format: Multipurpose Internet Mail Extensions (MIME)

MIME Basic Structures and Headers

MIME Composite Media Types: Multipart and Encapsulated Message Structures

MIME Content-Type Header and Discrete Media: Types, Subtypes and Parameters
(Page 4 of 5)

Audio Media Type (audio)

This media type is used for sending audio information. The subtype normally indicates the specific format, with Table 244 showing a couple of common values.

**Table 244: MIME *audio* Media Type Subtypes**
type/subtype	Description	Defining Source
*audio/basic*	A “basic” audio type defined in the main MIME standards. It describes single-channel audio encoded using 8-bit ISDN mu-law PCM at 8000 Hz.	RFC 2046
*audio/mpeg*	MPEG standard audio (including the popular MP3 file format).	RFC 3003

Video Media Type (video)

This type is used for sending video information. Again, the subtype normally indicates the specific format (Table 245).

**Table 245: MIME *video* Media Type Subtypes**
type/subtype	Description	Defining Source
*video/mpeg*	Video encoded to the MPEG digital video standard.	RFC 2046
*video/dv*	Digital video corresponding to several popular standards including SD-VCR, HD-VCR, and DVB, as used by various types of video equipment.	RFC 3189
*video/quicktime*	Apple's Quicktime movie format.	Registration with IANA

Model Media Type (model)

This type describes a model representation, such as a two-dimensional or three-dimension physical model (Table 246).

**Table 246: MIME *model* Media Type Subtypes**
type/subtype	Description	Defining Source
*model/mesh*	A mesh, as used in modeling.	RFC 2077
*model/vrml*	A Virtual Reality Modeling Language (VRML) model.	RFC 2077
*model/iges*	A model file correspondng to the Initial Graphics Exchange Specification (IGES).	Registration with IANA

MIME Basic Structures and Headers

MIME Composite Media Types: Multipart and Encapsulated Message Structures

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Version 3.0 - Version Date: September 20, 2005

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