Rouvey Video Recordings
I would say that most of the Rovey videos, at least the ones I have ridden so far, aren't made during a real ride. I think they are filmed from a Moped or Motor-scooter. You ever notice how you never get passed by other riders that are visible in the videos? You are always passing them.
During a long 7 mile climb today it appeared that Rouvy breaks the climbs into segments as displayed on screen. The segment slope is some form of average or ?? but the resistance seems to stay the same while inside the segment. You can see in the video where the slope flattens and steepens in the climb segment yet the resistance doesn't seem to change until the segment changes.