I use notetaking software on my tablet to write lecture notes, and then I record myself reading and explaining my lecture notes. I use those recordings as teaching.
However, I find it very time consuming to produce good videos that way. I do not enter the same 'engaging' mode as when standing between an audience and a huge black board. I frequently get muddled, forget what I want to say, and falter.
I usually edit those videos but I believe it must be possible to deliver videos with a presentable performance right from the get go.