this was done with my Drone( dji inspire x5-oly 12mm) 5 jpegs for positional gps data, the rest was shot on 4K video -30fps. then video was imported into Bentley contextCapture and 1 jpeg extracted every 0.8 seconds. the video was approx 6 minutes long doing 3 passes of the area from the side facing the rocks and above facing down. pretty happy with the result.