CLUE media capture description
draft-groves-clue-capture-attr-00

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CLUE WG                                                        C. Groves
Internet-Draft                                                   W. Yang
Intended status: Informational                                   R. Even
Expires: March 14, 2013                                           Huawei
                                                      September 10, 2012

                     CLUE media capture description
                 draft-groves-clue-capture-attr-00.txt

Abstract

   This memo discusses how media captures are described and in
   particular the content attribute in the current CLUE framework
   document and proposes several alternatives.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on March 14, 2013.

Copyright Notice

   Copyright (c) 2012 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  4
   3.  Issues with Content attribute  . . . . . . . . . . . . . . . .  4
     3.1.  Ambiguous definition . . . . . . . . . . . . . . . . . . .  4
     3.2.  Multiple functions . . . . . . . . . . . . . . . . . . . .  5
     3.3.  Limited Stream Support . . . . . . . . . . . . . . . . . .  5
     3.4.  Insufficient information for individual parameters . . . .  5
     3.5.  Insufficient information for negotiation . . . . . . . . .  5
   4.  Capture description attributes . . . . . . . . . . . . . . . .  6
     4.1.  Presentation . . . . . . . . . . . . . . . . . . . . . . .  7
     4.2.  View . . . . . . . . . . . . . . . . . . . . . . . . . . .  7
     4.3.  Language . . . . . . . . . . . . . . . . . . . . . . . . .  8
     4.4.  Role . . . . . . . . . . . . . . . . . . . . . . . . . . .  8
     4.5.  Priority . . . . . . . . . . . . . . . . . . . . . . . . .  9
     4.6.  Others . . . . . . . . . . . . . . . . . . . . . . . . . .  9
       4.6.1.  Dynamic  . . . . . . . . . . . . . . . . . . . . . . .  9
       4.6.2.  Embedded Text  . . . . . . . . . . . . . . . . . . . . 10
       4.6.3.  Supplementary Description  . . . . . . . . . . . . . . 10
       4.6.4.  Telepresence . . . . . . . . . . . . . . . . . . . . . 11
   5.  Summary  . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
   6.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 11
   7.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 11
   8.  Security Considerations  . . . . . . . . . . . . . . . . . . . 12
   9.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 12
     9.1.  Normative References . . . . . . . . . . . . . . . . . . . 12
     9.2.  Informative References . . . . . . . . . . . . . . . . . . 12
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 12

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1.  Introduction

   One of the fundamental aspects of the CLUE framework is the concept
   of media captures.  The media captures are sent from a provider to a
   consumer.  This consumer then selects which captures it is interested
   in and replies back to the consumer.  The question is how does the
   consumer choose between what may be many different media captures?

   In order to be able to choose between the different media captures
   the consumer must have enough information regarding what the media
   capture represents and to distinguish between the media captures.

   The CLUE framework draft currently defines several media capture
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