ppsm to mp4 conversion describes either the process of turning a PowerPoint presentation or slideshow into MPEG-4 video (.mp4 file), or sometimes the recovery of video content embedded inside .ppsm files.
PowerPoint is always the best option for this because not only can it be used to edit and recover elements from the presentation files, but it also offers tools for direct export of the documents to multimedia formats, including MP4 files.
The same can probably be done with any similar presentation tool that supports PowerPoint formats as well, or even some dedicated online converters.
Updated: January 29, 2024