What is PRX? What Opens a PRX? File Format List from WhatIs.com

File Extension

PRX File Format

Windows multimedia XML file

PRX is a file extension for an XML file used by Microsoft Windows multimedia software. 

PRX files contain XML data referring to the audio and video codecs to be used, bit rates, and language. PRX files are used as a template for video formats used when creating a multimedia project. PRX files are referenced by Windows Media Player, Windows Live Movie Maker and Windows Media Encoder. PRX files can be edited by Windows Media profile editor which is bundled with the Windows Media Encoder installation.


Learn more about .PRX files:

Visit Windows Media Encoder at Microsoft.

Learn about Windows Media Services at ITKnowledgeExchange.com.

This was last updated in September 2010
Editorial Director Margaret Rouse

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