Microsoft Advanced Streaming Redirector
File type: Audio and sound file, Digital video and movie file
Files with asx extension are commonly used for Advanced Stream Redirectors. A link of sort used to launch streamed video in Media player.
Found 2 different file type records with the same asx filename suffix.
File type category:
Audio and sound file
Digital video and movie file
Date updated: July 13, 2025
File extension asx is used for Advanced Stream Redirector files. Also known as Windows Media Metafiles, these are text files that provide information about a file stream and its presentation.
The asx files go beyond the simple task of defining playlists to provide Windows Media Player with information about how to present particular media items of the playlist.
Windows Media Metafiles are based on XML syntax and can be encoded in either ANSI or UNICODE (UTF-8) format. They are made up of various elements with their associated tags and attributes. Each element in a Windows Media metafile defines a particular setting or action for Windows Media Player.
The asx files can point to any media file type that Windows Media Player recognizes and supports.
MIME types:
application/asx
application/ms-asx-plugin
application/ms-asx
Use Windows Media Player to open *.asx files.
These files are generally not meant to be converted to anything else.
Adobe Dreamweaver (Microsoft Windows)
MediaMonkey (Microsoft Windows)
VUPlayer (Microsoft Windows)
Playlist Manager (Microsoft Windows)
Adobe Dreamweaver (Microsoft Windows)
VUPlayer (Microsoft Windows)
Playlist Manager (Microsoft Windows)
Adobe Dreamweaver (Microsoft Windows)
VUPlayer (Microsoft Windows)
Playlist Manager (Microsoft Windows)
VLC media player (Microsoft Windows)
Microsoft Windows Media Player (Microsoft Windows)
Adobe Media Encoder (Microsoft Windows)
MediaMonkey (Microsoft Windows)
VUPlayer (Microsoft Windows)
jetAudio (Microsoft Windows)
Playlist Manager (Microsoft Windows)
KMPlayer (Microsoft Windows)
Winamp (Microsoft Windows)
Windows Media Player for Mac OS X (Apple macOS / Mac OS X)
VLC media player for Mac (Apple macOS / Mac OS X)
VLC media player for Linux (Linux/Unix)
VLC media player for Android (Google Android)
VLC media player (Microsoft Windows)
MediaMonkey (Microsoft Windows)
MediaMonkey (Microsoft Windows)
File type category:
Temporary file
Date updated: January 31, 2019
The asx file extension is also used by Alpha Five, a software development platform for one of its temporary files.
These files contains the indexing information generated by a query against a set. These files may be deleted.
In vast majority of cases, users cannot access temporary saved data.
Temporary files are usually not meant to be converted to anything else.
Alpha Five (Microsoft Windows)
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