LightMV - LightMV is the best free online service for you to make a video using photos and music.
Online Convert PPTX to MP4 - Online Convert allows you to convert any Microsoft PowerPoint 2007 PPTX file to MP4 easily.
Photostage - Quickly and easily combine photos and videos with a narration or soundtrack using PhotoStage slideshow software. Free slideshow maker download for Mac & PC.
iSpring Convert - Convert PowerPoint to HTML5 and MP4 video
Photopia - Photopia is the official successor to ProShow. Find out how you can easily transition to the next generation of slideshow software.
Converter365 Convert PPT to MP4 - Converter365 is an online freeware converter tool that enables you to convert PPT to MP4 with great ease.