Context
=======

Advene (Annotate Digital Video, Exchange on the NEt) is an ongoing
project in the LIRIS laboratory (UMR 5205 CNRS) at University Claude
Bernard Lyon 1. It aims at providing a model and a format to share
annotations about digital video documents (movies, courses,
conferences...), as well as tools to edit and visualize the
hypervideos generated from both the annotations and the audiovisual
documents. Teachers, moviegoers, etc. can use them to exchange
multimedia comments and analyses about video documents. 

The data model supporting the Advene application offers, in addition
to the annotation storage itself, an explicitation of their structure
(through notions of schema and annotation type), as well as an
explicit view concept (templates applied on data to produce
hypervideos) and queries. The following figure sums up the principle
of the use of hypervideos.

.. figure:: ../principle.png
   :alt: Advene principle schema
   :align: center

   Hypervideo creation and use in Advene

Collaborations with other partners like IRI_ during the Cinelab_
project (2007-2008) led us to identify weaknesses in the first version
of the data model, and to propose an evolution addressing these
issues. This document specifies the new model and format, used for
exchanging audiovisual metadata among Cinelab_ project partners, and
more widely as a storage and exchange format for various applications
(especially Advene_ and `Lignes de temps`_). The Cinecast_ projet
(2009-2012) allowed us to confront these evolutions to new application
fields and other partners, and validate their relevance.

.. _Cinelab: http://advene.org/cinelab/
.. _Cinecast: http://www.cinecast.fr/
.. _IRI: http://www.iri.centrepompidou.fr/
.. _Advene: http://advene.org/
.. _Lignes de temps: http://www.iri.centrepompidou.fr/outils/lignes-de-temps/