Advanced Stream Redirector

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Advanced Stream Redirector
Filename extension	`.asx`
Internet media type	`video/x-ms-asf`
Developed by	Microsoft

The Advanced Stream Redirector (ASX) format is a type of XML metafile designed to store a playlist of Windows Media files for a multimedia presentation.

It is used frequently on streaming video servers where multiple ASF files are to be played in succession. Both RTSP and MMS streaming protocols are supported, as well as HTTP.

ASX files have MIME type video/x-ms-asf (as do ASF files).

With the introduction of the WMA and WMV container formats in late 1990s, WAX and WVX extensions have also been introduced by Microsoft respectively.

Example

<asx version="3.0">
  <title>Example.com Live Stream</title>
 
  <entry>
    <title>Short Announcement to Play Before Main Stream</title>
    <ref href="http://example.com/announcement.wma" />
    <param name="aParameterName" value="aParameterValue" />
  </entry>
 
  <entry>
    <title>Example radio</title>
    <ref href="http://example.com:8080" />
    <author>Example.com</author>
    <copyright>©2005 Example.com</copyright>
  </entry>
</asx>