PresentationTube is a non-profit that has supplied a totally free service to instructors for lots of years. That service is the capability to tape-record video presentations based on PowerPoint pdfs and files. Just recently, PresentationTube released a Chrome extension that lets you develop video lessons in your web internet browser..

PresentationTubes Chrome extension will let you record while discussing your PowerPoint slides or a PDF. You can tape-record with your webcam turned on or you can select to simply tape your voice talking over your slides or PDF. While youre recording you can make use of the screen, include text notes to the screen, and emphasize text on the screen..
When you have finished taping a discussion with PresentationTubes Chrome extension you can submit it directly to the PresentationTube site where you can then release it openly or keep it unlisted. Just 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 good one for anyone who is looking for a new, simpler method to create video lessons based on their existing slides. In the meantime you can always download your Google Slides as PPT or PDF to use with PresentationTube.