well today i got under my car to make a video and it does seem like to do exactly the same thing but I noticed that there isnt any PLAY in mine since if i turn the driveshaft even a little my half shafts turn! even if i do it slowly. but they move too much at the cv boot joint connection when it shouldnt it means the ujoint in there is bad??
here are some quick videos that i made
the wheels are locked and the halfshaft is moving where the joint is inside the cv boot
that seems like too much play to me
YouTube - 2
YouTube - halfshaft 1
ANY play in a cv or u-joint is too much. You, my friend, need new cv axles.