PresentationTube is a non-profit that has provided a totally free service to teachers for several 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 produce 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 with your cam turned on or you can pick to just tape your voice talking over your slides or PDF. While youre recording you can draw on the screen, add text notes to the screen, and emphasize text on the screen..
When you have actually ended up recording a presentation with PresentationTubes Chrome extension you can submit it directly to the PresentationTube website where you can then release it publicly or keep it unlisted. Similar To Google Docs, if you make your PresentationTube unlisted then just people who have the direct link to it can see it..
Applications for Education.
PresentationTubes Chrome extension could be an excellent one for anyone who is looking for a brand-new, much easier method to produce video lessons based upon their existing slides. It only works with PowerPoint or PDFs at this time. Ideally, 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.