What is PRX? PRX, short name for Profile XML, is used as the file extension for Media Profile XML files. .PRX files are XML files that used to store media profiles for Windows multimedia programs publishing digital audio and video files. See the sample .PRX file included below.

File Extension: .PRX

MIME Type: text/xml

File Content: Media Profile XML

.PRX files are Media Profile XML files, that used to store media profiles for Windows multimedia programs publishing digital audio and video files. Here is a sample .PRX Media Profile XML file, Ulead_NTSC_GoodQuality.prx:

<profile version="589824" storageformat="1" name="Ulead_NTSC_GoodQuality" 
   description=""> 
   <streamconfig majortype="{73647561-0000-0010-8000-00AA00389B71}" 
     streamnumber="1" streamname="Audio Stream" inputname="Audio409" 
     bitrate="48024" bufferwindow="5000" reliabletransport="0" 
     decodercomplexity="" rfc1766langid="en-us"> 
     <wmmediatype subtype="{00000161-0000-0010-8000-00AA00389B71}"  
       bfixedsizesamples="1" btemporalcompression="0" lsamplesize="1115"> 
       <waveformatex wFormatTag="353" nChannels="2" nSamplesPerSec="44100" 
         nAvgBytesPerSec="6003" nBlockAlign="1115" wBitsPerSample="16" 
         codecdata="008800001F00D9220000"/> 
     </wmmediatype>
   </streamconfig>
   <streamconfig majortype="{73646976-0000-0010-8000-00AA00389B71}" 
     streamnumber="2" streamname="Video Stream" inputname="Video409" 
     bitrate="455000" bufferwindow="5000" reliabletransport="0" 
     decodercomplexity="AU" rfc1766langid="en-us"> 
     ...

.PRX Media Profile XML file sample: Click sample.prx to download.

Since .PRX files are in text format, you can use Notepad or any text editor to create or modify them. No special software is needed.

For for information on how to use .PRX Media Profile XML files, see links below:

• Using batch file, by Microsoft.