download the original files to view the quality of the P3 video pre-youtube.com. The videos are in 4K. Some rolling shutter is present and very disappointing, however aside from that the quality is quite good. I hope my P3 is balanced better if vibration is the cause for the jello.
Having reviewed multiple videos on a 4K TV I'd say DJI's camera is much better. DJI's camera is made specifically for aerial photography, whereas the GoPro is an all around camera.