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git-svn-id: file:///home/ksmith/gitmigration/svn/xmpp/trunk@2128 4b5297f7-1745-476d-ba37-a9c6900126ab
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Peter Saint-Andre 2008-08-06 04:24:38 +00:00
parent f7dd451a94
commit 6386c56c7a
1 changed files with 2 additions and 1 deletions
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xep-0221.xml
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@ -55,7 +55,8 @@
<section1 topic='Media Element' anchor='media'>
<p>The root element for media data is &lt;media/&gt;. This element MUST be qualified by the "urn:xmpp:tmp:media-element' namespace &NSNOTE;. The &lt;media/&gt; element MUST be contained within a &lt;field/&gt; element qualified by the 'jabber:x:data' namespace.</p>
<p>If the media is an image or video then the &lt;media/&gt; element SHOULD include 'height' and 'width' attributes specifying the recommended display size of the media in pixels.</p>
<p>The &lt;media/&gt; element SHOULD contain at least one &lt;uri/&gt; element to specify the out-of-band location of the media data. <note>Constrained execution environments prevent some clients (e.g., Web clients) from rendering media unless it has been received out-of-band.</note> If included, the &lt;uri/&gt; element MUST contain a URI that indicates the location and MUST include a 'type' attribute that specifies the MIME type of the media. As specified in &rfc2045;, the value of the 'type' attribute MUST include a top-level media type, the "/" character, and a subtype; in addition, it MAY include one or more optional parameters (e.g., the "audio/ogg" MIME type in the example shown below includes a "codecs" parameter as specified in &rfc4281;). The "type/subtype" string SHOULD be registered in the &ianamedia;, but MAY be an unregistered or yet-to-be-registered value.</p>
<p>The &lt;media/&gt; element SHOULD contain at least one &lt;uri/&gt; element to specify the out-of-band location of the media data. <note>Constrained execution environments prevent some clients (e.g., Web clients) from rendering media unless it has been received out-of-band.</note> If included, the &lt;uri/&gt; element MUST contain a URI that indicates the location and MUST include a 'type' attribute that specifies the MIME type of the media.</p>
<p>The 'type' attribute of the &lt;uri/&gt; element is REQUIRED. The value of the 'type' attribute MUST match the syntax specified in &rfc2045;. That is, the value MUST include a top-level media type, the "/" character, and a subtype; in addition, it MAY include one or more optional parameters (e.g., the "audio/ogg" MIME type in the example shown below includes a "codecs" parameter as specified in &rfc4281;). The "type/subtype" string SHOULD be registered in the &ianamedia;, but MAY be an unregistered or yet-to-be-registered value.</p>
<p>The &lt;media/&gt; element MAY also contain one or more &lt;data/&gt; elements for distributing the media in-band. The &lt;data/&gt; element MUST be qualified by the 'urn:xmpp:tmp:data-element' as defined in &xep0231;. The <em>encoded</em> data SHOULD NOT be larger than 8 kilobytes. <note>If a stanza contains more than one &lt;data/&gt; element, the sending entity MUST take care not to trigger server-defined bandwidth limits.</note></p>
<example caption='Audio Media Element'><![CDATA[
<media xmlns='urn:xmpp:tmp:media-element'>