i don't know how to explain the walnut shape
for the second video , the 0:26 second video twitter
it is not the true shape of the object ....... ite darker part is a circle dot with + cross over it ...... this is the shadow of the mirror reflector camera inside the ball turret .... the real "ufo" is a smaller size but brighter thats why it flare up like a flower ....... the object moves diagonally upwards screw up the progressive scan of the video sensor chip