PresentationTube is a non-profit that has actually offered a complimentary service to teachers for numerous years. That service is the capability to tape video presentations based upon PowerPoint files and PDFs. Just recently, PresentationTube released a Chrome extension that lets you develop video lessons in your web browser..

PresentationTubes Chrome extension will let you tape-record while talking over your PowerPoint slides or a PDF. You can tape-record with your cam turned on or you can choose to simply tape your voice discussing your slides or PDF. While youre tape-recording you can draw on the screen, include text notes to the screen, and emphasize text on the screen..
When you have actually completed taping a presentation with PresentationTubes Chrome extension you can publish it directly to the PresentationTube website where you can then release it openly or keep it unlisted. Much like Google Docs, if you make your PresentationTube unlisted then only people who have the direct link to it can view it..
Applications for Education.
PresentationTubes Chrome extension could be a great one for anybody who is looking for a new, much easier way to develop video lessons based on their existing slides. In the meantime you can constantly download your Google Slides as PPT or PDF to utilize with PresentationTube.