I'm a teacher and with the quarentine I need to be able to prepare my lessons for students to watch them at home. I have designed several PDFs with Beamer, with the idea of using them as whiteboards.
My original idea was to use a PDF as a presentation, and be able to draw things on it as I record my voice simultaneously. This would be the closest thing I could do to simulate a real lesson. Then I would like to export this as a video, so that the drawings do not appear "out of the blue", but the whole traces are recorded frame by frame, so students can actually see how things are being drawn, and not the finished drawing at once.
Is there any software I could use? I'm on Windows 7. I can manage to record the audio separately if you can provide me with some software to record a video where I draw on a PDF file, but if there was some software that had the recording feature built-in, it would be even better.