Hi George, the video for me was very low res and skipping, (maybe not yet rendered by YouTube, or my internet).
I saw some scuffles but can’t say with confidence it’s robbing, could be just normal traffic. When I had robbing, I could see bees interlocked and dropping off the platform.
Robbers, when flying away from the hive they are robbing tend to dip in their flight, they go down, then up. That’s because they are loaded with the loot. The hive occupants leave the hive with no excess baggage, and tend to fly straight up.
I’ll have another look tomorrow.