Great Downloader easy to use can convert into multiple file formats. Fast and impressive
Online Convert PPTX to MP4 - Online Convert allows you to convert any Microsoft PowerPoint 2007 PPTX file to MP4 easily.
Video DownloadHelper - Browser extension to download videos from the Web
Converter365 Convert PPT to MP4 - Converter365 is an online freeware converter tool that enables you to convert PPT to MP4 with great ease.
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
iSpring Convert - Convert PowerPoint to HTML5 and MP4 video
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.