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

PresentationTubes Chrome extension will let you tape while discussing your PowerPoint slides or a PDF. You can tape with your cam switched on or you can select to simply tape-record 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 finished recording a discussion 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 searching for a brand-new, simpler method to develop video lessons based upon their existing slides. Sadly, 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 constantly download your Google Slides as PPT or PDF to utilize with PresentationTube.