How to Add Subtitles to Videos Embedded in PowerPoint

1. Go to homepage of STAMP (Subtitling Text Add-in for Microsoft PowerPoint) and download it.
2. Follow the steps in the installation wizard and install STAMP.
3. To verify that the add-in installed correctly, do the following: Open PowerPoint 2010 -> Click the File tab, and then click Options -> Click Add-ins, and verify that STAMP is listed under Active Application Add-ins.

After you have installed the STAMP add-in, you will see new options on the Playback tab in the Audio Tools or Video Tools group when you have an audio or video item selected in your presentation. The ribbon commands are enabled or disabled based on the media item selected and the captions already attached to it

Then, do the following:

Play the add-on --> Set Start Time and Set End Time --> Caption Text field --> Add and Delete Captions --> Create Caption

Reference：http://www.instantfundas.com/2011/03/add-subtitles-to-powerpoint-embedded.html

Available just for Microsoft Office 2010