iSpring Convert - Convert PowerPoint to HTML5 and MP4 video
PTE AV Studio - Create photo and video slideshows with effects and styles.
Online Convert PPTX to MP4 - Online Convert allows you to convert any Microsoft PowerPoint 2007 PPTX file to MP4 easily.
iMovie - Turn your videos into movie magic.
Converter365 Convert PPT to MP4 - Converter365 is an online freeware converter tool that enables you to convert PPT to MP4 with great ease.
Filmora - Filmora is a trusted, legacy video editing platform that's strong in the fundamentals but lacks some of the bells and whistles that come with some other video editing software.