PresentationTube is a non-profit that has actually supplied a complimentary service to teachers for many years. That service is the ability to record video presentations based upon PowerPoint pdfs and files. Just recently, PresentationTube launched a Chrome extension that lets you create video lessons in your web internet browser..

PresentationTubes Chrome extension will let you tape-record while talking over your PowerPoint slides or a PDF. You can tape-record with your webcam switched on or you can select to just record your voice discussing your slides or PDF. While youre tape-recording you can draw on the screen, add text notes to the screen, and highlight text on the screen..
When you have ended up tape-recording a discussion with PresentationTubes Chrome extension you can upload it straight 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 see it..
Applications for Education.
PresentationTubes Chrome extension could be a good one for anybody who is looking for a new, simpler 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.