Hi,
Is MP4 the only format of video that cannot be played in PowerPoint 2013?
In PowerPoint 2013, .mp4 videos encoded with H.264 video (a.k.a. MPEG-4 AVC) is recommended. However, even though the video file has the .mp4 extension, it may not play correctly if you don't have the correct version of the codec installed, or
if the file is not programmed in a format that is recognized by your Windows system.
You might want to convert your MP4 video to a more compatible video format supported by PowerPoint, for example AVI, WMV, ASF, MPG, then try again.
More reference on
Video and audio file formats supported in PowerPoint.
Regards,
Ethan Hua
TechNet Community Support
It's recommended to download and install
Configuration Analyzer Tool (OffCAT), which is developed by Microsoft Support teams. Once the tool is installed, you can run it at any time to scan for hundreds of known issues in Office
programs.
