This takes me back to when I was working on real-time digital video streaming for drones and one of the engineers I was working with had a prized mpeg-ts poster breaking out the protocol on a packet field level. We would frequently be found around that poster reviewing the interpretation of one of the packets making sure we were handling things correctly. Good times!
You mean those Predator drones used in the early 2000s that had a standard DVB-S uplink for the video feed, which were unencrypted back then? I think the video feed was IP encapsulated, inside DVB-MPE, but am not 100% sure about it?
EDIT: Big-boy drones.