I would like to understand how he creates the transparent/blurry terminal overlays in front of the video. My hypothesis is that he creates two videos. First, the screen recording with alpha channels. Second, the video of him coding. He then layers them on top of each other. Any other ideas? Which screen recording software supports this kind of recording?
Hint: I think that he is not streaming the video as a wallpaper, because in some videos you can see his screen with the regular wallpaper.