There do exist specialized programs that can create a video recording from a Microsoft PowerPoint presentation or slideshow. These can be basically used for a PPT to MP4 conversion. Should you wish it, you could convert MP4 further to any other video file.
Convert Microsoft PowerPoint 97 to 2003 presentation to MPEG-4 video file format.
We have found one software suitable in our database for this conversion.
Microsoft Windows software - convert ppt to mp4 on Windows
imTOO Convert PowerPoint to MP4A is a program that is used to make MP4 videos from PowerPoint presentations.
Convert from ppt file
to mp4 file
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.