SMIL basic clients identifying themselves

The current Internet draft on the SMIL MIME type contains
the wording below - two questions at the end:

> 5. The "profile" optional parameter
> 
>    This parameter is meant to be used in MIME media type based content
>    negotiation (such as that done with the HTTP "Accept" header) to
>    negotiate for a variety of SMIL based languages. It is modelled after
>    the "profile" parameter in the application/xhtml+smil MIME type
>    registration [4], and is motivated by very similar considerations.
> 
>    The parameter is intended to be used only during content negotiation.
>    It is not expected that it be used to deliver content, or that origin
>    web servers have any knowledge of it (though they are welcome to).
>    It is primarily targetted for use on the network by proxies in the
>    HTTP chain that manipulate data formats (such as transcoders).
> 
>    The value of the profile attribute is a URI that can be used as a
>    name to identify a language.  Though the URI need not be resolved in
>    order to be useful as a name, it could be a namespace, schema, or a
>    language specification.
> 
>    As an example, user agents supporting only SMIL Basic (see
>    http://www.w3.org/TR/smil20/smil-basic.html) currently have no
>    standard means to convey their inability to fully support SMIL 2.0.
>    While SMIL 2.0 Basic user agents are required to parse the full SMIL
>    2.0 language, there is potentially a substantial burden in receiving
>    and parsing document content that will not be presented to the user,
>    since its functionality is not included in SMIL Basic.
> 
>    In future, the functionality afforded by this parameter will also be
>    achievable by the emerging CC/PP framework [5]. It is suggested that
>    the "profile" parameter be used until the CC/PP framework has been
>    finalized.
> 
>    An example use of this parameter as part of a HTTP GET transaction
>    would be:
> 
>         Accept: application/smil+xml;
>            profile="http://www.w3.org/2001/SMIL20/REC/HostLanguage"


Questions:

1) Has this actually been implemented ? 
2) What URL are people using to identify SMIL basic ? 
   Other SMIL variants ?

Received on Tuesday, 27 August 2002 10:12:25 UTC