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

PresentationTubes Chrome extension will let you record while talking over your PowerPoint slides or a PDF. You can tape-record with your webcam turned 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 actually finished recording a presentation with PresentationTubes Chrome extension you can publish it straight to the PresentationTube website where you can then publish it publicly or keep it unlisted. Much like Google Docs, if you make your PresentationTube unlisted then just individuals 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, much easier way to create video lessons based on their existing slides. It only works with PowerPoint or PDFs at this time. Hopefully, in the future there will be support for Google Slides. In the meantime you can always download your Google Slides as PPT or PDF to utilize with PresentationTube.