Network Working Group T. Hansen
Request for Comments: 3938 AT&T Laboratories
Updates: 3458 October 2004
Category: Standards Track
Status of this Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright (C) The Internet Society (2004).
The Message-Context header defined in RFC 3458 describes the context
of a message (for example: fax-message or voice-message). This
specification extends the Message-Context header with one additional
context value: "video-message".
A receiving user agent (UA) may use this information as a hint to
optimally present the message.
Email messages can be used to convey many different forms of
messages, and the user will interact with different types in
different ways. As explained in RFC 3458 , the "message context"
of the message conveys information about the way the user expects to
interact with the message, such as which icon to display. RFC 3458
then registers the message contexts for a "voice-message", "fax-
message", "pager-message", "multimedia-message", "text-message", and
2. Video Message
One form of email is a message that consists mostly of a video
stream. Examples of services that send video email are those
connected to cell phones that capture video streams, and video email
services that use webcams attached to a PC. These email messages
currently consist of two flavors, both of which can be properly
considered a video message:
1. those that embed the video stream internally within the message as
a body part, and
2. those whose video stream is stored on a third party's video
However, none of the existing message contexts properly identify such
video messages. This specification extends the Message-Context
header with one additional context value: video-message.
3. IANA Considerations
As specified in RFC 3458 , this document registers "video-message"
in the "Internet Message Context Types" repository.
Message-Context class name:
Summary of the message class:
Indicates a message whose primary content is a video mail message.
The primary content is video data. The context is usually a
message recorded on a video camera, or a message whose primary
purpose is to contain an external reference to a message recorded
on a video camera.
Person & email address to contact for further information:
Tony Hansen, firstname.lastname@example.org.
4. Security Considerations
This header is intended to be an indicator of message context only.
As such, it is only a hint and requires no behavior on the part of a
message user agent.
7. Full Copyright Statement
Copyright (C) The Internet Society (2004).
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