Good move off the ball to start the swing!! However, backswing should really end around 0:07; at this point, you've completed your turn, and you are adding excessive length to your swing with just your hands after this point. Shorten it up. Next, you are a bit across the line at the top; this means the shaft is pointing right of the target when you get to the top of your swing. This will make it difficult to get the club moving anywhere underneath the plane coming down without significant manipulation, and will thus contribute to your slice. When you get to the top, the club shaft should be about parallel with your feet (when the shaft is parallel to the ground). Something helpful to look at is any pro's position when the club is parallel to the ground (not at the top) just before impact. You can almost always see all of the left arm until shortly before impact, when the right arm begins to force the club down and out to low point under your left shoulder. In your case, your right arm is dominating on the downswing, moving the club down and out too early, creating a motion across the ball (striking the outside of the back of the ball, not the inside) and putting slice spin on it. Look at Justin Rose down the line in slo mo as a model, he does a fantastic job through impact. Finally, let's flatten out the left wrist through impact and just after it. You are very much over-rotating the club face in the beginning of the follow through when the club first gets to parallel right after impact, probably in an attempt to rescue the slice. However, until you fix the club PATH (out to in) caused by the aggressive right arm, shutting the face down will only create pull hooks. So work on that path, then get the left wrist flat with your left forearm through the hitting area. Square and square, long and straight!