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Media RSS
Extension: Media RSS (Yahoo)
Extension Name: mrss
Purpose: MediaRSS supplements the enclosure
capabilities to handle additional information
and media types. MediaRSS' extension allows
content publishers to syndicate multimedia
content such as TV, video clips, movies, and
images. It also allows content to be represented
in multiple formats.
Declaration: The name space for Media
RSS is defined at http://search.yahoo.com/mrss
<rss version="2.0" xmlns:media="http://search.yahoo.com/mrss">
Elements:
<media:group> is a sub-element of the
<item> tag. It allows for groupoing
of media representations (optional element)
<media:content> is a sub-element of
either <media:group> or <item>
and is used to specify the enclosed media
content. It has 14 attributes and most are
optional. The "url" attributes specifies
the URL to the media and is required unless
the <media:player> tag is used.
The rest of the elements are optional and
may appear at the <channel>, <item>,
<media:content> and/or <media:group>
levels. When these are specified at the <channel>
or <item> levels they are treated as
the defaults and applied to every media object
in its scope. For example if a <media:keywords>
tag appeared at the channel level it would
apply to all in the <media:group> and
<media:content> elements in all of the
<item> tags.
Elements appearing at more specific levels
or deeper override the same element at more
general levels. Elements appearing at <media:content>
have highest priority, followed by <media:group>,
<item> and the <channel> with
the lowest priority.
<media:title> the title of the media
object
<media:description> description of the
media object
<media:keywords> a short list or comma
separated words and phrases describing the
media content.
<media:thumbnail> image to represent
the media. It is possible to use an optional
"time" attribute to change the image
as the media plays
<media:category> allows tags or categories
to be set for the media
<media:hash> a "md5" or "sha-1"
hash of the media can be used to help verify
the integrity and/or look for duplicates
<media:player> required if <media:content>
did not specify the "url" attribute.
This tag allows the media object to be accessed
through a web browser or media console.
<media:credit> allows credit to be given
to people and entities for the creation of
the media.
<media:copyright> provides a means to
specify the copyright if no other copyright
module is used, such as creative commons.
<media:text> allows text to be included
with the media object. Some possible uses
include transcripts, lyrics, and close captioning.
by using the optional attributes it is possible
to syncronize the text with the playback of
the media.
<media:restrictions> allows complete
control of payback of the media using a wide
range of criteria.
Example:
<!-- Snipped for Brevity -->
<item>
<title>FeedForAll's Show Tunes
and Song</title>
<link>http://www.feedforall.com/songs.htm</link>
<description>FeedForAll cool
show tunes and lyrics. </description>
<media:group>
<media:content url="http://www.feedorall.com/sample.mp3"
fileSize="122345" type="audio/mpeg"
isDefault="true" expression="sample"
bitrate="128" framerate="24"
duration="98" height="220"
width="300" />
<media:adult> false </media:adult>
<media:title> FeedForAll file sample
</media:title>
<media:hash> dfdec888b72151965a34b4b59031290a
</media:hash>
<media:player url="http://www.feedforall.com/player"
height="220" width="300"
/>
<media:credit role="author">
J Housley </media:credit>
<media:text type="plain">
FeedForAll supports name space extentions,
specifically Yahoo's media RSS </media:text>
</media:group>
</item>
<!--Snipped for Brevity-->
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