Rui Carmo
This is very cool, and a good (if not deep) overview of what you can do with the Pi 4 hardware.
Having built a few digital signage solutions atop the Pi (one of which entailed H.264 streaming to the original hardware and another which evolved into what is used yearly at Pixels Camp), the HEVC split display support is especially interesting to me, and I hope this surfaces someplace as a reusable solution.