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image
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... multimedia messages that might include
audio or images, are simply not mentioned. Even in the case of text,
however, RFC 822std11(-> 2822prop) is inadequate for the needs of mail users whose
...
... Content-Type value, for transmitting video or
moving image data, possibly with audio as part of the
composite ...
... type of data, while the subtype specifies a specific format for that
type of data. Thus, a Content-Type of "image/xyz" is enough to tell
a user agent that the data is an image ...
... image/xyz" is enough to tell
a user agent that the data is an image, even if the user agent has no
knowledge of the specific image ...
... image, even if the user agent has no
knowledge of the specific image format "xyz". Such information can
be used, for example, to decide whether or not to show a user the raw
data from an unrecognized subtype -- such an action might be
...
... data from an unrecognized subtype -- such an action might be
reasonable for unrecognized subtypes of text, but not for
unrecognized subtypes of image or audio. For this reason, registered
subtypes of audio ...
... audio. For this reason, registered
subtypes of audio, image, text, and video, should not contain
embedded information that is really of a different type. Such
compound types should be represented using the "multipart" or
...
... type := "application" / "audio"
/ "image" / "message"
/ "multipart" / "text"
/ "video" / extension-token ...
...
image -- image data. Image requires a display device
(such as a graphical display, a printer, or a FAX
machine ...
... image -- image data. Image requires a display device
(such as a graphical display, a printer, or a FAX
machine) to view the information. Initial
...
... (such as a graphical display, a printer, or a FAX
machine) to view the information. Initial
subtypes are defined for two widely-used image
formats, jpeg and gif.
...
... video -- video data. Video requires the capability to
display moving images, typically including
specialized hardware and software. The initial
...
... The ability to associate some descriptive information with a given
body is often desirable. For example, it may be useful to mark an
"image" body as "a picture of the Space Shuttle Endeavor." Such text
may be placed in the Content-Description header field.
...
... distinguish them, at the highest level, from such unreadable data as
images, audio, or text represented in an unreadable form. In the
absence of appropriate interpretation software, it is reasonable to
...
... X.400
mail, for example, must be able to tell the difference between a
body part that contains an image and a body part that contains an
encapsulated message, the body of which is an image ...
... image and a body part that contains an
encapsulated message, the body of which is an image. In order to
represent the latter, the body part must have "Content-Type:
...
... encapsulated message, with its own "Content-Type: image" header
field. The use of similar syntax facilitates the conversion of
messages to body parts, and vice versa, but the distinction
...
...
which format to view. This makes sense, for example, if mail
includes both a nicely-formatted image version and an easily-edited
text version ...
... are "ASCII", "EBCDIC", "IMAGE", and "LOCALn" where "n" is a
decimal integer, typically 8. These correspond to the
...
... RFC-959]. Note that "BINARY" and "TENEX" are not valid
values for MODE, but that "OCTET" or "IMAGE" or "LOCAL8" should be
used instead. IF MODE is not specified, the default value is
...
... The Image Content-Type ...
... A Content-Type of "image" indicates that the body contains an image.
The subtype names the specific image ...
... image.
The subtype names the specific image format. These names are case
insensitive. Two initial subtypes are "jpeg" for the JPEG format,
...
... GIF].
The list of image subtypes given here is neither exclusive nor
exhaustive, and is expected to grow as more types are registered with
IANA ...
... A Content-Type of "video" indicates that the body contains a time-
varying-picture image, possibly with color and coordinated sound.
The term "video" is used extremely generically, rather than with
...
... Types provide a standardized mechanism for tagging messages or body
parts as audio, image, or several other kinds of data. A
distinguished parameter syntax allows further specification of data
format details, particularly the specification of alternate character
sets ...
... MIME-conformant mailer might still include
audio, image, or video, should also be treated in this way.
A user agent ...
... audio" ; case-insensitive
/ "image" / "message"
/ "multipart" / "text"
/ "video" / extension-token ...
... ________________________________________________________________
Content-type: image
Subtypes defined by this document: jpeg, gif
...
... line conventions are used as well. The body may be a UNIX-style text
file, or a Sun raster image, or a VMS indexed file, or audio data in
a system-dependent format stored only in memory, or anything else
...