I met a guy some time ago running a first person view (FPV) stream over Wifi. He said that the setup didn't use a complete Operations System Interconnect (OSI) network stack and this allowed them to stream video faster then one might over User Datagram Protocol (UDP). I don't recall the details but at the time he said it was a common trick used by Drone flyers, perhaps this was just the group he knew. I was wondering if anyone had any further information on this. I believe he was streaming 4K and was quite surprised. At the time I was messing around with a an early Raspberry PI and trying to stream video myself but I could only achieve a speed/quality that where far inferior by comparison.
This is done by placing streaming video data (RTP) directly into the Wi-Fi frames. Checkout https://github.com/svpcom/wifibroadcast/ project for more details.