I don't really see "jumping" in the clip that you've uploaded. You're panning fairly quickly, which could account for the blur-- remember, you're only shooting at 1/50th of a second. If you think about that in photography terms, you'd need to be holding your breath with a 50mm lens to have any chance of sharpness. Then there's focus that can be off during shooting; making sure that you're editing in 24fps; and having to put up with YouTube's compression. If the image is sharp when on a tripod, the camera is doing fine.