Cannot Play Media in PowerPoint? To fix audio, video, compatibility playback issues with PowerPoint media files, Optimize Media Compatibility, install Codecs, etc.

According to Microsoft, "Windows Media Player can frequently play media clips that PowerPoint cannot." So, if you have a stubborn video file that won't run in the standard PowerPoint video player ...

Microsoft PowerPoint for the web now lets users add videos with subtitles as well as closed captions to their presentations, making them more accessible.