RSS enclosure

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RSS enclosures are a way of attaching

The addition of enclosures to RSS, as first implemented by Dave Winer in late 2000 [1], was an important prerequisite for the emergence of podcasting, perhaps the most common use of the feature as of 2012^[update]. In podcasts and related technologies enclosures are not merely attachments to entries, but provide the main content of a feed.

Syntax

In RSS 2.0, the syntax for the <enclosure> tag, an optional child of the <item> element, is as follows:

<enclosure url="http://example.com/file.mp3" length="123456789" type="audio/mpeg" />

where the value of the url attribute is a

It is recommended that only one <enclosure> element is included per <item>.^[2]

Prefetching

The RSS <enclosure> has similarities to:

• the SMIL <prefetch> element,
• the HTML <link> element with rel="prefetch".[2]
• the
  RFC 2068
  section 19.6.2.4.)
• the
  Atom
  <link> element with rel="enclosure"

• Broadcatching
• Internet television
• Podcast
• Photofeed
• Vlog

References

External links

• The <enclosure> tag in the RSS 2.0 specification
• mod_enclosure - Enclosures in RSS 1.x
• Enclosure intended use case