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Captioning for Windows Media Player




Unlike QuickTime, there is only one way to caption Windows Media Player files. It requires a .asx file. This file can be easily made in NotePad or SimpleText; it contains basic lines of code that combine the video and caption file so they play back simultaneously. Don't be intimidated, we've provided the code. All you have to do is copy and paste.

1. Open a text editor

  • NotePad or SimpleText


2. Go to save as and name your file. Be sure to manually enter the ".asx" extension.


3. Copy this text into your document:


<asx version="3.0">
<abstract>Your abstract goes here</abstract>
<title>Your title goes here</title>
<author>Your author's name goes here</author>
<copyright>(c)Copyright information goes here</copyright>
<ref href="moviename.wmv?SAMI=SAMIfilename.smi"/>
<abstract>Your abstract goes here</abstract>
<title>Your title goes here</title>
<author>Your author's name goes here</author>
<copyright>(c)Copyright information goes here</copyright>

4. Make sure your video file and SAMI (.smi) file have exactly the same name before their extension.

For example, if your movie file was called "webvideo.wmv" you would want your .smi file to be saved as "webvideo.smi".

The highlighted part is wrong because the names before the .wmv and .smi extensions are not exactly the same.


5. After copying and pasting this text, only edit things outside the < > brackets. This information is played back in Windows Media Player, so it is important that you replace the generic text with information pertaining to your project.


6. Save the document. Again, be sure to save it as a .asx file. The default for these programs is .txt, so erase that extension and replace it with .asx.


7. This .asx file will now work just like a normal video file - it even bears a Windows Media icon. Keep in mind though, that this file is just a pointer file. In order for it to work properly the .asx, the .wmv and the .smi file must all be in the same folder.

Be sure to move the .smi file created by MAGpie to the folder containing your .asx and .wmv files.

*The SMIL file usually bears a different icon than the other files - don't be alarmed.

Folder View

8. To use this file on a webpage, simply link to the .asx file instead of the .wmv file. Clicking on the .asx link will pop open Windows Media Player, and the captions will play along with the video.


9. If you would also like to provide a non-captioned version on your web site, you can just link to the .wmv file.


10. The final step is to make sure your users can view the captions in Windows Media Player. In order for your user to see the captions in Windows Media Player, they will need to turn on the captions feature.

To do this, go to the View menu and choose captions, or go to Now Playing Tools and choose captions.

The location of this feature seems to change in every version of Windows Media Player, so you might have to do some research to find it.

Windows Media Player Interface


Magpie Tutorial


1. System Prep

2 .Download & Install

3. Creating Transcript

4. Importing to MAGpie

5. Timecode & Exporting

6. Captioning with QuickTime

7. Captioning with RealMedia

8. Captioning with Windows Media


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